Quad product broshure by SG ELECTRONICS

the closest approach to the original sound.

2008

review reprints

product brochure

Contents History . . . . . . . . . . . . . . 99 Series Electronics . . . .

2 14

Valve Amplification . . . . ESL Electrostatic Speakers L Series Speakers . . . . . .

2 4 14 24 30

Reviews 99 Series . . . . . . . . . . . .

Valve Amplification . . . .

ESL Electrostatic Speakers L Series Speakers . . . . . .

42 55 62 76

A History of

Achievement Since Peter Walker founded the business in 1936, all

story that began with the Quad 1 amplifier, which brought

Quad products have displayed an originality in design,

the benefits of 15 years knowledge and experience in

born from a full and proper understanding of every aspect

professional audio and industrial products to the task of

of sound reproduction. A world leader in audio amplifier

making the most accurate domestic audio amplifier of its

and electrostatic speaker design, Quad has, over the years,

age.

made a major contribution to the improvement of sound quality. This contribution has been recognised by awards

A few years later, in 1953, the product which set the

from around the world including the Queen’s Award for

standard for amplifiers was the Quad II Power Amplifier,

Technological Achievement in 1978 – the only one ever

the time of Queen Elizabeth’s Coronation and the year

presented to an audio hi-fi equipment manufacturer.

in which Mount Everest was finally conquered. This amplifier pioneered the principle of cathode coupling

For many people, buying their first Quad sound system can

through the output transformer to reduce harmonic

be a life changing experience. They enjoy the confidence

distortion to almost negligible levels. Such was its clear

of knowing that the complete system has been engineered

superiority that this model remained in production for

to achieve optimal performance, free from compatibility

18 years.

problems. They relax in the knowledge that Quad’s

legendary service department will give support throughout

Three years later, in 1956, Quad demonstrated the first

the system’s useful life. They derive pleasure from knowing

true full-range electrostatic loudspeaker. This remarkable

that Quad is a company of individuals who care about both

product (known later as the ESL 57) used a virtually mass-

the design and construction of their products, while sharing

less plastic film as a moving diaphragm between two

their love of music. These are just some of the reasons why

charged plates. Compared with moving-coil loudspeakers,

we now serve the children and even grandchildren of our

the ESL 57 was free of unwanted colourations and

first customers. The history of Quad is one of technical

distortions. This landmark product remained in production,

achievement in the field of sound reproduction. It is a

virtually unchanged, for 28 years.

In 1967 Quad introduced its first transistorised amplifiers,

The arrival of the radical 77 Series in 1994 introduced the

Peter Walker receiving an

the 33 Control Unit and the 303 power amplifier. These

concept of a fully integrated sound system operated with

export award from HRH

amplifiers introduced a new ‘Triples’ output stage that

a two-way remote control system. The system boasted

Prince Philip.

solved all the thermal instability problems that plagued

numerous new types of circuit technology as well as some

early transistor designs. Radical in both circuit design and

of the most advanced control software seen in a consumer

appearance, they went on to win a Design Council Award

product. Two years after the launch, Quad was presented

in 1969.

with the ‘European Amplifier of the Year’ award for the 77 Series Integrated Amplifier.

Amplifier performance took a further step forward in 1975 with the arrival of the Quad 405 ‘Current Dumping’

In 1999, Quad launched the successory to the 77 series,

amplifier. This remarkable new circuit topology remains

the current 99 series, and supplemented this with a range

one of the few truly original amplifier designs and has

of moving-coil loudspeakers, the L series and two new

featured in Quad products ever since. For this technology

models of electrostatic - the ESL 988 and ESL 989. Every

Quad was awarded the Queen’s Award for Technological

product in our current portfolio has received international

Achievement in 1978. Numerous other prestigious awards

acclaim, resulting in Quad receiving more Product of the

were presented to Quad from all over the world.

Year awards in 2004-2005 than at any prior period in the company’s history.

In 1981 Quad announced the ESL 63; a full-range electrostatic loudspeaker based upon two sets of concentric

These are just some of the highlights from Quad’s pedigree

annular electrodes fed through sequential delay lines.

line of technological achievement. However, Quad has

This patented system produces a sound pressure pattern

never indulged in technical ‘one-upmanship’. The

identical to the theoretical ideal of a point source origin.

technology is there for a purpose – that has remained

Once again a Quad electrostatic loudspeaker became the

constant over the years. To reproduce music in a form

reference standard around the world.

that is the closest approach to the original sound.

The 99 series offers an excellent combination of style and performance. The understated casings hide one of the most intelligent and integrated control systems and a pure acoustic performance which has been the Quad trademark since 1936. Hi-Fi News Magazine Separates System of the Year 2003-2004 99 Series Hi-Fi News Magazine Separates System of the Year 2004-2005 99 Series Diapason Dâ&#x20AC;&#x2122;Or 99 CD-P

99 Series Quad sound systems have always been able to give their

attention to detail, but for the enjoyment they have brought

owners the utmost pleasure and passion when they listen

to the most discerning audiophiles.

to music. But now the 99 Series brings more. Conceived as a fully integrated component system, there is an assurance

The modern design of the 99 Series components has been

of absolute compatibility and the convenience offered

developed to dovetail ease of use, style and elegance

by the high levels of intelligence exhibited in the control

with one of the finest sounds available today. Intelligent

system.

control systems are used to create a seamless link between

Each component within the 99 Series is one of the

operation from a single remote control. Our unique â&#x20AC;&#x2DC;Quad

the various 99 Series components, allowing complete finest examples available today. Brilliantly engineered in

linkâ&#x20AC;&#x2122; bus connection system transfers not only system

every respect; highly specified transformers; audiophile

commands, but also fully balanced audio signals.

components; multi-layer circuit boards and the most advanced software appear in abundance throughout the system.

With the 99 Series, you are assured exquisite performance; convenience of use; quality of construction; enviable support, but most of all, the pedigree of a company that

Our reputation, however, is based upon more than good

has built a long-term reputation on the ability to reproduce

engineering and innovation. Quad Hi-Fi units are famous

music in a manner that aims to be the closest approach to

the world over, not for their high specifications and

the original sound...

99 series

CDP-2 A clean sheet design,

The Quad CDP-2 shares only the casework with its

the CDP-2 confirms the

brother, the CD-S. A clean-sheet design, the CDP-

relevance of CD as a

2 confirms the relevance of CD as a state-of-the-art

state-of-the-art format

format in the 21st century. With a level of detail and

in the 21st century.

accuracy to this standard, many industry onlookers have

Specifications 99 CDP-2 integrated CD player

questioned the need for the new ‘high-resolution’ formats at all. Although we always look with interest at new technologies, the compromise to CD performance is not justified by the limited amount of well recorded highresolution software available. Rather, the ability to reproduce CD to the . very highest standards possible is our absolute priority. The CDP-2 is an update of our acclaimed 99 CD-P player, and differs only in its transport mechanism. The CDP-2 uses a bespoke designed transport mechanism rather than the usual off-the-shelf Philips solution. Optimised

Max. Output Level (QuadLink) . . . . . . . . . 5.3V RMS, Balanced

over a 12 month period, for this application alone, the

Frequency Response . . . . . . . . . . . . . . 20Hz to 20kHz (+0dB/-

new mechanism lifts an already popular player to greater

0.5dB)

heights of performance. Converting its digital data to

Total harmonic distortion (THD) . . . . . . . . . . . 0.002% at 1kHz

an analogue signal is the task of a 24bit, 192kHz D/A Convertor, output from which is available as either fixed level for use with a traditional pre-amplifier (such as the

Signal to noise ratio (S/N) . . . . . 110dB, 24bit (20Hz – 20kHz) 95dB, 16bit (20Hz – 20kHz)

99 Pre-Amplifier), or as variable level to allow direct

Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -100dB at 1kHz

connection to a power amplifier. This potentiometer

Gain Error . . . . . . . . . . . . . . . . . . . . 0.5dB (@-90dB, f=500Hz)

output forgoes nearly all of the functionality of 99 Pre,

D/A Convertor Maximum resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 bit Maximum sampling frequency. . . . . . . . . . . . . . . . . . . 192kHz

but it’s a simple and inexpensive addition producing the ability to create the shortest possible signal path from DAC to speaker. This versatility is further enhanced as the CDP-2 features

Digital Audio Inputs . . . . . . . . . . 3 x RCA Coax 75ohm, SPDIF 3 x Optical TosLink, SPDIF Digital Audio Output . . . . . . . . . . . . . . . Optical TosLink SPDIF

streams - such as that from a digital output (if present) on

Disc Compatibility . . . . . . . . . . . . CD-DA Conventional Audio CD-R Recordable CD (finalised & unfinalised)

a DAB tuner, TV/satellite box, or computer soundcard. At

Dimensions ( H x W x D ) . . . . . . . . . . . . . 80 x 321 x 310mm

this point the sound quality of each of these sources will

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5kg

no less than six digital inputs, to accept a range of PCM

take a huge step forward, because their digital signal will be processed by the CDP-2’s state-of-the-art decoders rather than the throw-away ones often included. First and foremost an outstanding CD player - the finest in our range - the CDP-2 is revered for its flexibility too:

Max. Line Output Level (RCA) . . . . . . . . . . . . . . . . . 2.4V RMS

making it Quad’s most popular player the world-over.

The 99CDP-2 combined with the 99 Stereo Power amplifier and the 11L Loudspeakers is a perfect entry to Quad and a stunning system in every respect.

99 series

CD-S

The 99 CD-S is a 2005 model, and replaces the original 99 CD player - the previous first port-of-call into a Quad hi-fi system. This model also dispenses with the digital inputs and the variable output level of the full CDP-2.

Specifications 99 CD-S integrated CD Player

Using a new transport, our own proprietory loading mechanism, control software and the most advanced decoding with the emphasis on reading data correctly, the CD-S produces a sensational performance without fuss. Mains powered and offered with standard RCA connectors or with a ‘Quad-Link’ to be connected through a Quad 99 Pre-amplifier, the CD-S is as versatile as it is practical. When used with the ‘Quad-Link’ system, the

Max. Line Output Level (RCA) . . . . . . . . . . . . . . . . . 2.4V RMS

CD player is operated through the system remote control

Max. Output Level (QuadLink) . . . . . . . . . 5.3V RMS, Balanced

(supplied with the pre-amplifier) and dovetails into the

Frequency Response . . . . . . . . . . . . . . 20Hz to 20kHz (+0dB/-

system. Power triggers, system commands and balanced audio signals are all communicated through the bus system. The CD-S uses Crystal 24bit/192kHz DACs for a high resolution, detailed soundstage.

0.5dB) Total harmonic distortion (THD) . . . . . . . . . . . 0.002% at 1kHz Signal to noise ratio (S/N) . . . . . 110dB, 24bit (20Hz – 20kHz) 95dB, 16bit (20Hz – 20kHz) Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -100dB at 1kHz Gain Error . . . . . . . . . . . . . . . . . . . . 0.5dB (@-90dB, f=500Hz)

The CD-S offers the perfect entry point to the joys of

D/A Convertor Maximum resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 bit Maximum sampling frequency. . . . . . . . . . . . . . . . . . . 192kHz

owning a Quad

Upsampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x2

hi-fi system.

Digital Audio Output . . . . . . . . . . . . . . . Optical TosLink SPDIF Disc Compatibility . . . . . . . . . . . . CD-DA Conventional Audio CD CD-R Recordable CD (finalised & unfinalised) Dimensions ( H x W x D ) . . . . . . . . . . . . . 80 x 321 x 310mm Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5kg

99 series

FM Tuner In many countries FM radio still has the potential to

Specifications

provide the highest fidelity programme quality. The Quad 99 FM Tuner has been designed to make the best use of

FM Tuner

that potential. The UK has gained a world-wide reputation for the high-quality music broadcasts transmitted by the BBC, and as a result, manufacturers such as Quad have considerable experience in designing tuners that receive and reproduce music realistically. The Quad 99 FM Tuner incorporates that experience in full.

Tuning range . . . . . . . . . . . . . . . . . . . . . . . 88 to 108 MHz

The 99 FM Tuner and integrated 99 CD players are both

Channel spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 kHz

connected to the rest of the system via our ‘Quad-Link’

Sensitivity (30dB quieting) . . . . . . . . . . . . . . Mono 8 dBuV

balanced line audio transmission. Not only does this make

system, which combines complete system control with Sensitivity (50dB quieting) . . . . . . . . . . . . . Mono 18 dBuV Stereo 18 dBuV

the entire system remarkably easy to control, but provides the cleanest audio signal possible.

Full limiting . . . . . . . . . . . . . . . . . . . . . . . . <1 uV (1.2 dBf)

Signal-to-noise ratio . . . . . . . . . . . . . . . . .

Mono 72 dB (A)

(1mV, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . Stereo 67 dB (A)

Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mono 0.03%

The FM tuner still offers

(1kHz, 25kHz deviation) . . . . . . . . . . . . . . .

the finest sound quality

Stereo 0.05%

possible from radio, Capture ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 dB

showing a clean pair

IF rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >100 dB

of heels to most DAB

AM suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . >60 dB

alternatives.

Image rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . >80 dB Pilot tone suppression . . . . . . . . . . . . . . . . . . . . . . >60 dB Cross-talk . . . . . . . . . . . . . . . . . . . . . . . . .

-40 dB at 1 kHz

De-emphasis . . . . . . . . . . . . . . . . . . . . . . .

50 uS or 75 uS

Aerial input . . . . . . . . . . . . . . .

2 x 75 Ohms un-balanced

Dimensions ( H x W x D ) . . . (70mm x 321mm x 310mm)

99 series

Pre-Amplifier State-of-the-art performance combined with unique operating features sets the Quad 99 Pre-amplifier apart from competing products.

Specifications 99 pre-amplifier

The combination of universal phono-socket connectors and Quad-Link inputs gives the ability to connect an almost unlimited number of sources, each with optimal matching. All inputs, including those for moving-coil and moving-magnet cartridges, have adjustable sensitivity. 3 Aux & tape inputs

This flexibility also extends to the wide range of precise

(In addition to the ‘Quad-Link’ bus inputs, the pre-amplifier Control Unit has 3 auxiliary inputs, plus a tape loop and turntable connections)

tone control adjustments that can be made. In addition to the usual high-frequency filter, there are adjustments for the

Sensitivity . . . . . . . . . . . . . . . . . . . . . . . 100, 300 or 775 mV

bass response, and the unique Quad ‘Tilt’ control which

Signal-to-Noise-Ratio . . . . . . . . . . . . . ›97 dB (A) ref.775 mV

skews the entire frequency response to give a preferred

Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ‹0.002%

tonal balance. Phono inputs - MM (MC)

The 99 Pre-amplifier is packed with technical innovation

Sensitivity . . . . . . . . . . . 1,3 or 7.75 mV (100, 300 or 775

including noiseless solid-state signal switching and

uV)

The 99 Pre-amplifier has

digitally addressed analogue volume and balance controls.

Signal-to-Noise-Ratio . . . . . . 78 dB (A) ref.775 mV (775 uV)

an intelligent control

These track both left and right channels with a previously

Distortion . . . . . . . . . . . . . . . . . . . . . . . . .

system to communicate with all components connected via the ‘QuadLink’ connector.

‹0.005% (‹0.01%)

unattainable accuracy of better than 0.1dB. Pre-Amp Output Level . . . . . . . . . . . . . . . . . . .

775 mV (3.3 volts maximum)

Source Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 100 ohms

AMPBUS Output Level . . . . . . . . . . . . . . . . . . . . . . 2 volts (8 volts maximum) Source Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 20 ohms

Tape Output Level . . . . . . . . . . . . . . . . . . . . . . . 100, 300 or 775mV (10V maximum) Source impedance . . . . . . . . . . . . . . . . . . . . . . . . . 330 ohms

Frequency response All inputs except MM & MC . . . . . . . . . . . . . . 10 Hz to 20 kHz +0dB /- 0.3 dB 3 Hz to 56 kHz +0dB/- 3 dB MM & MC inputs . . . . . . . . . 20 Hz to 20 kHz +/- 0.5 dB 7 Hz to 53 kHz +0.5dB/- 3 dB

Dimensions ( H x W x D ) . . . (70mm x 321mm x 310mm)

99 series

Power Amplifiers 99 Stereo Power Amplifier

Specifications 99 stereo

Quad power amplifiers have always been amongst the

and mono

finest in the world. Over the years, they have earned a reputation for being ‘straight wires with gain’, because they neither add nor take anything away from the original music signal. The 99 Stereo power amplifier maintains this tradition. It uses a dual complementary feedback circuit with exceptional stability margins to achieve exemplary performance and an output of over 80 watts per channel. Overload recovery is instantaneous and the

Maximum Power Output . . . . . . 90 WRMS -8 Ohms(0.5% THD) 120 WRMS -4 Ohms(0.5% THD)

amplifier is fully protected against over-driving or misuse, without resorting to output line fuses or relays, which degrade the quality of the signal fed to the loudspeakers. The 99 Stereo power amplifier can be safely used to drive

Maximum Output Current . . . 11 Amps peak each channel

most types of loudspeaker, both Quad’s own electrostatic models and conventional models made by both Quad

Total Harmonic Distortion . . . . . . . . . . . . . . . . . . . ‹0.05%

and other manufacturers.

(70 watts into 8 ohms; 20 Hz to 20 kHz)

99 Mono Power Amplifier Input Sensitivity ( phono ) . . . . . . . . . . . . . . . . . . . . 775 mV

Powerful amplifiers can more faithfully reproduce the dynamics of the music, enabling the user to have a wider

Output Impedance . . . . . . . . . . . . 1.5uH parallel with 0.05 Ohms

choice in the selection of loudspeakers, particularly when less efficient models are being considered. Power is something that this 99 Mono power amplifier has in

DC offset voltage . . . . . . . . . . . . . . . . . . .

less than 10 mV

abundance. Into a nominal 8 Ohm load it delivers well over 150 Watts and a breathtaking 220 Watts into a 4

Frequency Response . . . . . . . . 3 Hz to 50 kHz (+0dB/-3dB)

Ohm load.

Signal-to-noise ratio (70W) . . . . . 110dB (20 Hz to 20 kHz)

99 Stereo power amplifier and shares its

In all other respects, this amplifier is close to the technology and topology as well Dimensions ( H x W x D ) . . . (70mm x 321mm x 310mm)

as its excellent standards of performance.

99 mono power amplifier (as above but) Maximum Power Output . . . . . . . . . . . . . . . 150 WRMS - 8 Ohms(0.5%THD) 220WRMS - 4 Ohms(0.5%THD)

99 series

909 ‘Current Dumping’ Power Amplifier 909 Stereo Power

Specifications

Amplifier

909 power amplifier

The 909 Stereo power amplifier incorporates Quad’s current

patented dumping

technology and is one of the finest audio amplifiers available today. The current dumping technique Maximum Power Output . . . . . . . . . . . . . . . . . . 140 WRMS at 8 Ohms ( 0.5% THD ) 250 WRMS at 4 Ohms ( 0.5% THD )

Maximum Output Current . . . 11 Amps peak each channel

eliminates many of the problems

The 909 power amplifier

associated

is universally regarded as

with

transistor

amplifiers giving a consistent predictable performance without

a n d

one of the finest amplifiers

a need for

available today.

the fine tuning adjustments on the production line. In current dumping amplifiers there is a very high quality low power output amplifier and a very high power output

Total Harmonic Distortion . . . . . . . . . . . . . . . . . . . ‹0.02%

amplifier whose performance is not critical. This high

(100 watts into 8 Ohms; 20 Hz to 20 kHz)

power output amplifier controls the loudspeaker at all times and provides the current or ‘muscle’ to generate

Input Sensitivity (phono) . . . . . . . . . . . . . . . . . . . . . 775 mV

the sound. The low power output amplifier is arranged to generate a signal that compensates for errors between the

Output Impedance . . . . . . 1.5 uH parallel with 0.05 Ohms

input signal and the signal fed to the loudspeakers.

DC offset voltage . . . . . . . . . . . . . . . . . . .

less than 10 mV

The result is that the quality and accuracy of the output

Frequency Response . . . . . . . 13 Hz to 40 kHz (+0dB/-1dB)

power amplifier. In the 909 this low power output amplifier

signal depends only upon the performance of the low has been engineered to the highest standards. The problems Crosstalk at 1 kHz . . . . . . . . . . . . . . . . . . . . -90dB at 1kHz

of crossover distortion; quiescent current adjustment; thermal tracking and transistor matching all disappear. If

Signal-to-noise ratio ( 70W ) ›108dB (20 Hz to

such a thing as a perfect amplifier were to exist, then the

20kHz)

909 would be very close to that perfection.

Dimensions ( H x W x D ) . . (140mm x 321mm x 240mm)

Valve amplification systems Arguably one of the most important products in the history of hi-fi was the Quad II power amplifier. Now, nearly fifty years after the original, we have launched the Quad II-forty valve amplification system and the Quad II-classic power amplifier. For many audiophiles, the age of the transistor left a big hole in the emotion and pleasure provided by good valve amplification. The hi-fi world became orientated around numbers and statistics and choosing a new product was simply a question of numerical specifications. Based on the styling of and reflecting Peter Walkerâ&#x20AC;&#x2122;s circuit topology from the original, but brought up to date by the remarkable skills of our mechanical and electrical engineers, these new systems bring a richness and weight to any recording without the colouration many expect from such amplifiers. Not only are these some of the finest sounding valve pre/power combinations available today, but the genuine heritage and craftsmanship of the original has been preserved in the styling which can only be described as exquisite.

The Quad

II-eighty

The Quad ll-80 is an 80 watt mono power amplifier

and a small portion of the output phase of the first half is

following in the tradition and philosophies of Peter

fed to the grid of the second half providing matched but

Walker. The output section consists of 4 KT88 valves

of opposite phase of signal that is buffered by a third twin

running as two pairs in push pull with the hallmark

triode cathode follower to be coupled then by capacitors

tradition of partial cathode loading in the output

to the grids of the output valves.

transformer linearising the output stage permitting lower

The need for the buffer which is the new departure is

distortion than the usual Ultra Linear or triode methods.

to overcome the miller effect in the output valves that

However, it does require a greater grid driving voltage.

effect the high frequency response and allow virtually

This is easily achieved by the Peter Walker method of

full clean output at 20KHz.

a balanced pair input stage. The main difference is that instead of 2 pentodes, 2 twin triode valves are used

The output transformer has been designed to improve

in 'Cascode' providing slightly more gain with lower

high frequency performance and accurate balance of

distortion and accurate balance. DC feedback controls

the two push pull halves. Also the transformer has been

the up pair of the cascode to ensure accurate matching

designed to make sure that full output is realised at the

of the anode voltage as a tapped sample of the anode

bass frequencies down to 20 Hz.

voltage going to the grid of that valve ensuring that the cathode provides the correct voltage for the prime lower

Each output valve has its own cathode resistors to

tubes, so that they run in a constant voltage mode. As is

provide reliability and self matching.

the normal Quad practice the audio goes to the input half

and the screen grids of the KT88 valves is run from a lower voltage again for good reliability. The whole amplifier has a total of only 16 dB of feed back providing good stability into virtually any known loudspeaker and especially the famed Quad electrostatic loudspeakers.

Specifications II-classic Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80W RMS Power Bandwidth -3dB . . . . . . . . . . . . . . . . . . . . . 15-40kHz THD . . . . . . . . . . . . . . . . . . . . 0.2% @ 80W 1kHz. 0.5% @ 80W 30Hz-15Hz. 1.0% @ 80W 20Hz-20Hz Signal to Noise . . . . . . . . . . . . . . . . . . .

Greater than -94dB

Frequency Response . . . . . . 10hz-30kHz (+0dB/-0.5dB) 3Hz -50kHz (-3dB) Damping Factor . . . . . . . . . . . . . . . . . . . . . . . . . 16 @ 1kHz Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V RMS Valves . . . . . . . . . . . . . . . . . . . . . . 2 x 6SL7 Input, 1 x 6SN7 Rectifier, 4 x KT88 Output

Quad Valve System

II-forty Power Amplifier The Quad II-forty retains the elegance of the 1950s Quad II but with a level of sophistication, a build quality and finish rarely seen on any product old or new. The chassis has been substantially increased in size to accommodate the

Specifications II-forty Power Amplifier

much larger components, all of which are hard wired by hand following a similar topology to the original. Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40WRMS

The modern listener demands a higher output than the

THD @ 700Hz . . . . . . . . . . . . . . . . . . . . . . . . 0.3% @ 40W

fifteen watts of the original Quad II. The new Quad II-forty

0.03% @ 1W

uses larger output valves, KT88s instead of KT66s, and a

Residual hum and noise . . . . . . . . . . . . . . Better than -80dB

more robust power supply utilising a 5U4G rectifier valve.

Frequency response . . . . . . 10 Hz to 30 kHz (+0dB/-0.5dB)

The input valves are now military specification 6SH7s

Damping factor . . . . . . . . 20 @ 700 Hz (referred to 8 ohm)

instead of EF86s.

Power consumption . . . . . . . . . . . . . . . . . 180W maximum

All Quad products are expected to last a lifetime â&#x20AC;&#x201C; even

Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 x 6SH7 Input

Loudspeaker taps . . . . . . . . . . . . . . . . . 4 Ohm and 8 Ohm

longer. Many Quad customers still derive immense pleasure

2 x KT88 Output

listening to products built over fifty years ago. These new

1 x 5U4G Rectifier

amplifiers are no exception and with periodic servicing

Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V RMS

and a caring hand you can expect the performance of these

Dimensions ( H x W x D ) . . (185mm x 200mm x 390mm)

amplifiers to continue for many decades to come.

Quad Valve System

QC-twenty four Pre Amplifier

The QC-twenty four valve pre amplifier is designed in perfect synergy with the power amplifiers. The styling is again gloriously â&#x20AC;&#x2DC;retroâ&#x20AC;&#x2122; matching the Quad II-forty

Specifications QC-twenty four Pre Amplifier

perfectly but the design is otherwise completely new; inside especially.

Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 x line level 2 x buffered tape loops

The QC-twenty four uses a functionally simple audio circuit and relay input switching to preserve signal purity. The finest quality components are used throughout the construction. We use some exclusive and very high quality military valves previously designed and manufactured for use in missile guidance systems. Not only are these incredibly accurate but also very hard wearing.

Valve complement . . . . . . . . . . . . . . . . 1x 6111 twin triode THD @ 1V RMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.2% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02% @ 1W Frequency response . . . . . . . . . . 5Hz - 50 KHz (+0-0.5dB) Hum and noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . >-80dB Line stage gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15dB Recommended minimum load 50 kOhms Dimensions ( H x W x D ) . . . (90mm x 220mm x 300mm)

The Quad

II-classic A faithful reproduction of the original, the new Quad II-

Given the quite modest components of the day, he was

Classic offers audiophiles the chance to recreate the spirit

able to engineer something which was quite literally

and atmosphere produced from one of the most famous

greater than the sum of its parts.

amplifiers in audio history. The Quad II-Classic has been recreated accurately with The original Quad II was first launched in 1953, designed by

output valves and input valves the equivalent of those used

Peter Walker. At the time, many of his contemporaries were

in the original design. The same balancing act has been

also producing good quality valve amplifiers. The Quad II

employed to ensure the same wealth of detail and gentle

looked, in comparison, very simple and unassuming, but

tone of the original.

its performance was far beyond that which its diminutive dimensions might suggest.

The output valves produce around 15 Watts per channel, operating in Class A which, although slight by modern

The property which set the Quad II amplifier apart from

standards, allows a gloriously sweet and refined sound

other amplifiers of the time was its output stage. It was

with appropriately matched contemporary loudspeakers.

arranged such that the cathode coupled circuit emulated the performance of triode operation, but with the size and efficiency characteristics of pentode operation. It was this breakthrough that ensured the Quad II was to remain in continuous production until 1970.

Specifications II-classic Input Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . 570mV RMS

Peterâ&#x20AC;&#x2122;s circuit, notably the design of the output transformer,

Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15W RMS

has become the stuff of legend amongst electronics

Output Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohms

engineers. Studied and analysed by the finest minds in the industry, the elegance and coherence of the design is still regarded as a reference today.

THD @ 700Hz . . . . . . . . . . . . . . . . . . . . . . . 0.08% @ 12W Residual hum and noise . . . . . . . . . . . . . . Better than -90dB Frequency response . . . . . . . . 10 Hz to 20 kHz (+0/-0.2dB) Damping factor . . . . . . . . . . 11.75 @ 700 Hz (referred to 8 ohm) Power consumption . . . . . . . . . . . . . . . . . . 90VA maximum Valves . . . . . . . . . . . . . . . . . . 2 x EF86, 2 x KT66, 1 x GZ34 Dimensions (mm) . . . . . . . . . . . . . . . . . . . . 335 x 121 x 171 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3kg

Designed by valve supremo, Tim DeParavicini, the Quad twenty four P is a stunning addition to the range. Designed holistically with the power and pre-amplifiers, it brings an entirely new dimension to vinyl listening

The .Quad

QC .phono .stages For .the .analogue .purist, .the .combination .of .a .good .valve . amplifier . and . a . good . turntable . is . the . closest . possible . approach .to .the .original .recording .

SPECIFICATIONS Quad-twenty .four .P

There . are . two . options . for . adding . such . functionality . to . our .valve .pre-amplifiers . .A .solid-state .module .is .available .

Valve .complement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 .x .6111

for . the . standard . QC-twenty . four . pre-amplifier . (known . as .

THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<0 .08% .(A-weighted)

the . QC-24 . phono . stage) . which . allows . direct . connection .

Frequency .response . . . . . . . . . . . . . . . . . . . .20Hz .- .20 .KHz .(+0-0 .5dB)

of .a .turntable .with .an .internal .switch .to .change .between .

Hum .and .noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Better .than .60dB

moving-coil . and . moving-magnet . cartridges . . This . can . be .

Input .Impedance

fitted .as .standard .or .added .later .

Moving .magnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47kâ&#x201E;Ś Moving .coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10â&#x201E;Ś

For . the . connoisseur, . however, . there . is . the . Quad . twenty .

Stage .Gain

four .P .dedicated .valve .phono .stage . .This .has .been .designed .

High .sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .3mV .(MM)/130uV .(MC)

for . Quad . by . valve . supremo .Tim . DeParavicini . - . probably .

Medium .sensitivity . . . . . . . . . . . . . . . . . . . . . . . 2 .6mV .(MM)/260uV .(MC)

the . finest . valve . amplifier . designer . in . the . world . today . . It .

Low .sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .2mV .(MM)/520uV .(MC)

has .been .voiced .by .the .finest .ears .in .the .industry .and .will .

Nominal .output .level

add .an .entirely .new .dimension .to .your .enjoyment .of .vinyl .

(ref .5 .2mV, .MM, .Low) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .0

recordings .

Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Selectable .MC/MM .cartridge Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 .x .Fixed .line .level

This . unit . features . a . moving-magnet/ . moving-coil . toggle .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 .x .Variable .line .level

switch . on . the . rear, . a . choice . of . input . sensitivities . and . a .

Power .consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 .VA .maximum

direct .full-level .output .or .variable-level .output .if .you .wish .

Dimensions .( .H .x .W .x .D .) . . . . . . . .(90mm .x .220mm .x .300mm)

to .connect .directly .to .a .power .amplifier .

ESL

A legend in Electrostatic loudspeaker design The Quad ESL is fundamentally different from conventional

even larger electrostatic diaphragms cannot be point

loudspeakers and even other electrostatic designs. Whilst

sources, so how can they be made to behave more like

most conventional speakers use cone type drive units and

the perfect loudspeaker?

a coil moving in a magnetic field, Quad uses the full-range electrostatic principle, first introduced in 1956. The sound

Quad solved the problem with an elegant engineering

is not created by a cone but by a very thin diaphragm, less

solution that was subsequently awarded a patent. Instead

than one tenth the thickness of a human hair.

of a large single electrode, Quad designed a number

This ultra-low mass diaphragm is coated with a

Each electrode is fed with a calibrated delay line so the

conductive material and is stretched between two fixed

sound first leaves the centre of the speaker then, after a

electrode plates. The electrodes carry a positive charge

short delay, the sound leaves the next ring and so on.

of electrodes arranged as a series of concentric rings.

and the diaphragm carries a negative charge. The size

The delayed sounds build up into a spherical waveform

of the charge on the electrodes rises and falls to track

identical to that produced by a theoretical point source.

the waveform of the musical signal; so attracting and

This innovative step brought closer the achievement of

repelling the diaphragm closer to and further from the

the perfect loudspeaker.

electrode plates. It is the movement of the almost massless diaphragm that creates the sound we hear.

The Quad ESL is a premiére music reproduction

Quad’s unique ESL system takes the performance of

meticulous attention to detail. It reaches the pinnacle of

loudspeaker constructed from the finest materials with electrostatic loudspeakers a step further. Acousticians

high-fidelity performance with an unparalleled ability

have long recognised that the ideal loudspeaker should

to sonically ‘disappear’, and create convincing three-

be a point source from which the waves of sound radiate

dimensional sound stages. Instruments and vocals occupy

in a fashion rather like the ripples resulting from a pebble

precise, accurately sized locations in space, giving an

dropped into a lake. It is obvious that large cones and

uncanny realism to reproduced sound.

Stereophile Magazine Component of the Year 2004-2005 ESL-989

Stereophile Magazine Speaker of the Year 2004-2005 ESL-989

HiFi News Magazine System of the Year 2004-2005 ESL-988

Diapason D’Or - ESL-989, ESL-63 and ESL-57

Quad ESL Series

ESL 2805 The ESL 2805 is the smaller of the two models using four panels rather than the six of the larger model.

Specifications ESL 2805 Maximum Power Output . . . . . . . . . . 2N/m2 at 2m on axis Sensitivity . . . . . . . . . . . . . . . . . 1.5u bar per volt referred to

The inner two panels of the ESL 2805â&#x20AC;&#x2122;s construction again utilise the

1m ( 86dB/2.83V RMS )

concentric anode rings for point source imaging, and the outer rings

Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohm nominal

are again linear in their response.

Maximum continuous input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V

larger brother, the ESL 2805 offers a sublime performance.

( 20 Hz to 20 kHz ) Programme peak . . . . . . . . . . For undistorted output: 40V Permitted peak input: 55V

The clarity of mid-range for which the Quadâ&#x20AC;&#x2122;s are most famed is

. . . . . . . . . . . . . . . . . . . . . . . . . . . .Above 100Hz - 0.5%

fully in evidence, as is the sparkling detail and transparency that

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Above 50Hz - 1.0%

has long been the hallmark of this series.

Frequency Response . . . . . . . . . . . . . . 37Hz - 21kHz (-6dB)

Whilst absolute bass extension and dynamic ability is less than its

Distortion (100dB @ 1m) . . . . . . Above 1000Hz - 0.15%

. . . . . . . . . . . . . . . . . . . . . . . . . . . 33Hz - 23kHz (useable)

Their response characteristics are virtually identical and a base

Axis band limits . . . . . . . . . . . . . . -6dB at 35Hz 3rd order

weight of 34.8kg, together with the rigid bracing, ensures they are

( low level ) . . . . . . . . . . . . . . . . . . . . . . . . . -6dB > 20kHz

suitably deep in bass and dynamic enough to fill all but the largest

AC Input . . . . . . . . . . . . . . . . . . . . . 220-240V or 110-120V

of listening rooms.

Power Fuse . . . . . . . . . . . . . . 100mA anti surge, 100 - 120V

For the Quad afficionardo without the need or desire for the

Dimensions ( H x W x D ) . . 1040mm x 695mm x 385mm (add 25-55mm for feet)

additional bass extension of the larger model this, the smaller of the

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.8kg net

ESLs is still regarded as the pinnacle of electrostatic refinement.

New Classique' Finish

Quad ESL Series

ESL 2905

Specifications ESL 2905 Maximum Power Output . . . . . . . . . . 2N/m2 at 2m on axis Sensitivity . . . . . . . . . . . . . . . . . 1.5u bar per volt referred to 1m ( 86dB/2.83V RMS )

The ESL 2905 is the largest of our full-range ESL models. It employs six electrostatic panels, the inner two utilising the concentric rings

Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohm nominal

of anodes used to create the point source image.

Maximum continuous input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V

The ESL 2905 has a fifty-percent greater diaphragm area than its

( 20 Hz to 20 kHz ) Programme peak . . . . . . . . . . For undistorted output: 40V Permitted peak input: 55V

smaller brother. This increase allows for a markedly improved

Distortion (100dB @ 1m) . . . . . . Above 1000Hz - 0.15%

is therefore a good choice for those in larger rooms, or those

. . . . . . . . . . . . . . . . . . . . . . . . . . . .Above 100Hz - 0.5%

seeking more drama on big pieces. However, this speaker doesn’t

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Above 50Hz - 1.0%

compromise on detail and control - far from it. After all, it is

bass response, and greatly enhanced dynamics. The ESL 2905

Frequency Response . . . . . . . . . . . . . . 32Hz - 21kHz (-6dB)

an electrostatic design and so has considerably less inertia and

. . . . . . . . . . . . . . . . . . . . . . . . . . . 28Hz - 21kHz (useable)

overhang than any moving-coil loudspeaker.

Axis band limits . . . . . . . . . . . . . . -6dB at 35Hz 3rd order ( low level ) . . . . . . . . . . . . . . . . . . . . . . . . . -6dB > 20kHz

Construction is a combination of tensioned aluminium extrusions

AC Input . . . . . . . . . . . . . . . . . . . . . 220-240V or 110-120V

coupled to stainless steel support structures, with a piano gloss

Power Fuse . . . . . . . . . . . . . . 100mA anti surge, 100 - 120V

wooden trim. The substantial base construction is finished with

Dimensions ( H x W x D ) . . 1430mm x 695mm x 385mm (add 25-55mm for feet)

piano gloss side cheeks and high-quality terminations.

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.6kg net

Internally, the highest quality components are used, including rare c-core transformers and high-grade audiophile capacitors. Three types of protection system are used to ensure the speakers are difficult to damage when over-driven. A rigid

three-dimensional

structural

support system, combined with an overall speaker mass of 41.6kg ensures the maximum transmission of sound energy. This results in the most dynamic and powerful Quad ESL ever produced.

New Classique' Finish

Quad ESL Series

ESL 988

The ESL 988 replaces the much-loved ESL 63 model. Although of similar size and proportions, the resemblance

ESL 988 Maximum Power Output . . . . . . . . . . 2N/m2 at 2m on axis Sensitivity . . . . . . . . . . . . . . . . . 1.5u bar per volt referred to

is only skin deep â&#x20AC;&#x201C; for more than 90% of the internal

1m ( 86dB/2.83V RMS )

components have been re-designed, upgraded, or

Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohm nominal

modified. Twenty years of materials science have led to improvements in virtually every component and area of construction. The new model has better audio transformers, a new

Maximum continuous input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V ( 20 Hz to 20 kHz ) Programme peak . . . . . . . . . . For undistorted output: 40V Permitted peak input: 55V

power supply, improved diaphragms, a strong heavyweight

Directivity index . . . . . . . . . 125Hz

5.0dB

moulded base and new grille assemblies. Particular

. . . . . . . . . . . . . . . . . . . . . 500Hz

6.4dB

attention has been given to the structural integrity of

. . . . . . . . . . . . . . . . . . . . . 1kHz . . . . . . . . . . . . . . . 7.2dB

the loudspeakers, which has been improved beyond all

. . . . . . . . . . . . . . . . . . . . . 8kHz . . . . . . . . . . . . . . 10.6dB

recognition.

Axis band limits . . . . . . . . . . . . . . -6dB at 35Hz 3rd order

The result of these changes is an electrostatic loudspeaker

( low level ) . . . . . . . . . . . . . . . . . . . . . . . . . -6dB > 20kHz

that is as much a leader today as its predecessor was 20

AC Input . . . . . . . . . . . . . . . . . . . . . 220-240V or 110-120V

years ago. Larger dynamics and a smoother response are

( double insulated ) . . . . . . . . . . . . . . . See rating details on base of unit

two of the most noticeable improvements in sound quality. A slight backward tilt lifts the stereo image when these speakers are floor standing.

Vintage

Specifications

Dimensions ( H x W x D ) . . . 940mm x 670mm x 315mm (including 185mm base) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.5kg net

Nouveau

Quad ESL Series

ESL 989

Specifications ESL 989 Maximum Power Output . . . . . . . . . . 2N/m2 at 2m on axis Sensitivity . . . . . . . . . . . . . . . . . 1.5u bar per volt referred to 1m ( 86dB/2.83V RMS ) Impedance . . . . . . . . . . . . . . . . . . . . . . . . . 8 ohm nominal Maximum continuous input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V

The ESL 989 shares much of its technology with the ESL 988, but it is a larger model with two extra bass panels and a higher rated power supply. The extra panels increase the bass output, but also contribute to an enhanced performance in the mid-band, which was already widely regarded as the cleanest in the world.

( 20 Hz to 20 kHz ) Programme peak . . . . . . . . . . For undistorted output: 40V Permitted peak input: 55V

Although referred to as ‘bass panels’, the additional

Directivity index . . . . . . . . . 125Hz

5.0dB

electrostatic panels are, in fact, full range (as are all the

. . . . . . . . . . . . . . . . . . . . . 500Hz

6.4dB

panels), but the increase in surface area allows a greater

. . . . . . . . . . . . . . . . . . . . . 1kHz . . . . . . . . . . . . . . . 7.2dB

volume of air to be moved, leading to an improvement

. . . . . . . . . . . . . . . . . . . . . 8kHz . . . . . . . . . . . . . . 10.6dB

in the lower frequencies. This particular development had

Axis band limits . . . . . . . . . . . . . . -6dB at 30Hz 3rd order

been anticipated for many years, but was never previously

( low level ) . . . . . . . . . . . . . . . . . . . . . . . . . -6dB > 20kHz

regarded as commercially and practically viable.

AC Input . . . . . . . . . . . . . . . . . . . . . 220-240V or 110-120V ( double insulated ) . . . . . . . . . . . . . . . See rating details on base of unit Dimensions ( H x W x D ) . . 1335mm x 670mm x 315mm (including 185mm base) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.3kg net

The ESL 989 is a true full-range electrostatic loudspeaker reproducing music with an ease and naturalness that is best described as uncanny. It has a virtual absence of the familiar loudspeaker problems of colouration, distortion, phase and frequency response errors. All that remains is the music and the original ambience. To the listener these are the very ingredients needed to create a real sensation of being there. The Quad electrostatic loudspeakers are unique and continue to be in a class of their own, but now have the versatility and range to cope with a much wider . repertoire.

Diapason D’Or ESL-989

Diapason D’Or - ESL-63

Diapason D’Or - ESL-57

L Series Dynamic Hi-fi Loudspeakers The L series of loudspeakers from Quad is one of the finest conventional loudspeakers available today. Since its launch, it has remained a firm favourite of the critics, winning the prestigious ‘What Hi-Fi?’ Product of the Year award twice in succession as well as a string of other internationally recognised awards. Conceived as an affordable introduction to the values of Quad, it retains many of the virtues of our flagship electrostatic loudspeakers, combining a superbly integrated mid-range with detail and resolution well beyond the standard of its class. Available in both hi-fi and home cinema configurations, the L series is distinguished both in performance and appearance. A choice of fine wood finishes is available, all piano lacquered to the highest standard.

Hi-Fi News Separates System of the Year 2003-2004

What Hi-Fi? Product of the Year (Speakers) 2002-2003

What Hi-Fi? Product of the Year (Speakers) 2003-2004.

What Hi-Fi? Product of the Year Full Size Speaker Packages 2004-2005

What Hi-Fi? - Best Buy subwoofer 2004-2005

What Hi-Fi? Best Buy Speakers 2004-2005

Quad L Series

11L & 12L Whilst Quad is more traditionally known for the

units are precision engineered and well integrated to

ESL series of loudspeakers, our expertise stretches

provide a seamless transition from high to low, really

way beyond electrostatics. Our ‘L’ series of dynamic .

capturing the essence of Quad – a supremely clean, and

loudspeakers is an embodiment of the very finest build and

flat response which accurately reproduces the original

technology available in moving-coil loudspeakers.

sound.

Each loudspeaker in the series is completely hand-

Slightly larger than the 11Ls are the 12L loudspeakers.

constructed by our own skilled craftsmen. From the

The cabinet volume and drive unit size are slightly

precision voice-coils to the seven coats of piano lacquer,

greater to produce a wider frequency response in the

everything is built, applied, cut and polished manually to

bass region. A 6.5" KEVLAR bass/mid driver replaces

ensure the very highest quality.

the 5" unit to produce an SPL of around -3dB at 40Hz. Elegant and simple, the uncluttered design has

The 11L is the first of these models, having highly

a remarkable dynamic range for such a small speaker

advanced KEVLAR composite drive units and a tweeter

– a consequence of the accuracy and speed of the long-

with a measured response beyond 40kHz. These drive

throw driver under pressure.

Specifications

11L

12L

Drivers Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125mm Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Tex

Drivers Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170mm Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Tex

Power Handling (RMS) . . . . . . . . . . . . . . . . . . . . . . . 150W

Power Handling (RMS) . . . . . . . . . . . . . . . . . . . . . . . 200W

Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohm

Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohms

Sensitivity (for 2.83 at 1m) . . . . . . . . . . . . . . . . . . . . 86dB

Sensitivity (for 2.83 at 1m) . . . . . . . . . . . . . . . . . . . . 88dB

Frequency Response ±3dB . . . . . . . . . . . . . 45Hz to 24kHz

HF Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43kHz

Crossover Frequency . . . . . . . . . . . . . . . . . . . . . . . . 2.2kHz

Size ( H x W x D ) . . . . . . . . . 310mm x 190mm x 243mm

Size ( H x W x D ) . . . . . . . . . 330mm x 205mm x 253mm

Quad L Series

21L

The 21L is the height of classical sophistication. A . loudspeaker which is simple and elegant in design, yet remarkable in performance. As well as negating the need for stands, the 21L gives an extended bass response over the standmount versions, yet retains all the precision, detail and imaging capabilities of its smaller brethren. The lustrous piano finish is applied to each speaker by hand over a period of seven days, each of which involves applying a coat of lacquer which must then dry at an ambient temperature before being cut and polished. The final coat is polished to a high gloss finish to produce one of the finest finishes seen on any . loudspeaker in this class.

Specifications 21L Drivers Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170mm Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Tex Power Handling (RMS) . . . . . . . . . . . . . . . . . . . . . . . 200W Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohm Sensitivity (for 2.83 at 1m) . . . . . . . . . . . . . . . . . . . . 88dB Frequency Response Âą3dB . . . . . . . . . . . . . 35Hz to 24kHz HF Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43kHz Crossover Frequency . . . . . . . . . . . . . . . . . . . . . . . . 2.2kHz Size ( H x W x D ) . . . . . . . . . 780mm x 205mm x 263mm

Quad L Series

22L

The 22L is the flagship of the range. This tall, floorstanding

model with ultra low distortion twin KEVLAR drivers produces a fast, dynamic bass, extending to around 30Hz at the lower end for real impact and a compelling sense of scale. Bass detail is excellent, tracking precisely every nuance of the deepest double bass while, maintaining a sense of open space around instruments, allowing them to ‘breathe’.

Specifications 22L Drivers Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170mm Mid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170mm Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Tex

Individual instruments sound natural and occupy precise locations in the huge soundstage for a real sense of being

Power Handling (RMS) . . . . . . . . . . . . . . . . . . . . . . . 300W

there at the live recording. Even in complex orchestral

Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohms

pieces, each instrument can be clearly identified and followed, retaining it’s own characteristics and personality. A heavily braced cabinet reduces internal resonance to minimal levels and the high level of detail and precision exhibited by all the drive units makes for a speaker with both neutrality and resolution – a worthy transducer for the audiophile and music-lover alike.

Sensitivity (for 2.83 at 1m) . . . . . . . . . . . . . . . . . . . . 89dB Frequency Response ±3dB . . . . . . . . . . . . . 30Hz to 24kHz HF Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43kHz Crossover Frequency . . . . . . . . . . . . . . . . . . . 150Hz, 3kHz Size ( H x W x D ) . . . . . . . . . 850mm x 205mm x 278mm

L Centre For the first time ever, Quad is producing a centre .

channel speaker within the L series – that is not to abandon our hi-fi roots, but to enable those with good multi-channel systems to enjoy the L series in all its glory – tonally and

Specifications L Centre

frequency matched to produce an exceptional surround sound speaker system capable of reproducing not only film soundtracks with spectacular clarity and precision, but also of exploiting the additional resolution and bandwidth available with new multi-channel formats such as SACD and DVD audio.

Drivers Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170mm Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Tex Power Handling (RMS) . . . . . . . . . . . . . . . . . . . . . . . 200W Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohm Sensitivity (for 2.83 at 1m) . . . . . . . . . . . . . . . . . . . . 88dB Frequency Response ±3dB . . . . . . . . . . . . . 35Hz to 24kHz HF Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43kHz Crossover Frequency . . . . . . . . . . . . . . . . . . . . . . . 2.2kHz Size ( H x W x D ) . . . . . . . . . 162mm x 425mm x 206mm

Quad L Series

L-ite

The Quad L-ite is the first compact cinema system from Quad - a classic 5.1 channel configuration, which can be expanded to 7.1 with the addition of extra satellite speakers. Using the same unique technology and styling that has made the Quad L series one of the most popular audiophile loudspeakers in the market today; the L-ite offers a sparkling performance exceeding that of most full-size systems. Combined with a subwoofer that offers microprocessor controlled filter circuitry,

Specifications L-ite System L-ite Satellite Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 x 100mm Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Soft dome

and remote control operation, the satellites blend seamlessly to create a full audio

Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohms

spectrum without any of the loss through the crossover region which plagues other

Frequency Response . . . . . . . . . . . . . . . . . . 70Hz to 24kHz

models on the market.

Size ( H x W x D ) . . . . . . . . . 225mm x 135mm x 160mm

The Quad L-ite is a system you can really be proud of. The clean styling and dazzling

L-ite Centre

piano-gloss lacquer adds a real touch of class. Each of the seven layers of gloss

Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 x 100mm

are applied by hand and polished to a high sheen before the next layer is added.

Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . 25mm Soft dome

The quality of the finish gives the system an exquisite style to match the incredible

Nominal Imp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ohms

performance, making the L-ite system one of the most desirable in its class.

Frequency Response . . . . . . . . . . . . . . . . . . 80Hz to 24kHz Size ( H x W x D ) . . . . . . . . . 135mm x 340mm x 160mm L-ite Subwoofer Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250mm Tri-lam

Integrating with the L Series All components from the Quad L-ite system can be purchased individually, and

Amplifier power . . . . . . . . . . . . . . . . . . . . . . . . 300W RMS Frequency range . . . . . . . . . . . . . . . . . . . . . . 25Hz to 95Hz

are fully compatible with all other L series models. Therefore, you can make

Max Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . 108dB

combinations: for example, a pair of Quad 11L speakers with the L-ite Centre, L-ite

Size ( H x W x D ) . . . . . . . . . 485mm x 288mm x 425mm

Satellites, and L-ite Subwoofer - if you donâ&#x20AC;&#x2122;t want the full-sized alternatives.

Weight . . . . . . . . . . . . . . . . . . . 28.5Kg (Gross) - 26Kg (Net) All speakers are magnetically shielded (except the L-ite Sub)

Cherry

Black

Rosewood

Silver

L2 Series A new breed

L2 is our new entry point into loudspeakers, but these are by no means ‘budget’ loudspeakers. Using advanced composite driver materials, rare-earth magnets, advanced alloys, quality terminals and finished in a choice of high-gloss, piano-lacquered real veneers, they are fully representative of Quad’s commitment to quality and performance. Voiced for a clean, natural mid-range performance with crisp, clean detail and a taut, punchy bass performance, L2 series loudspeakers excel with well-recorded, complex music scores. The layering of each instrument or vocal texture is clear and precise, allowing the listener to pick out nuances previously overlooked. Providing a ‘window’ on the recording, the natural tone of the recording is fully preserved to create a real insight into the original performance. Our manufacturing facility is possibly the world’s most advanced in terms of loudspeaker production. From raw material to finished product, the entire process occurs under a single roof. Diaphragm production, voice-coil winding, magnet assembly, PCB printing, crossover

manufacture, die-casting of chassis, terminal plate, terminals, dispersion guide, even the spike assembly all take place in the same building. Each cabinet is crafted from a eucalyptus based 25mm MDF, using computer controlled precision routers, before being assembled. Every cabinet is unique, finished with a real veneer – not reconstituted wood pulp as other manufacturers use – with seven coats of piano lacquer – each applied by hand, then dried at ambient temperature for 24 hours, then finally hand cut and polished before the next coat is applied. These are fine furniture grade finishes using the same techniques as are used to produce the world’s finest pianos. Whatever your musical tastes, or listening objectives, be they traditional 2-channel or AV, the L2-series loudspeakers will delight and deliver flawless performances, unequalled reliability and remain a stunning centrepiece of your audio system for many years to come. Backed with the support of our famous service department, as with all Quad products, the L2 series represent a very worthwhile investment.

Quad L2 Series

11L2 & 12L2 According to Quad’s philosophy a good loudspeaker

through the vocal range of frequencies, which is also the

should add nothing, nor remove anything from the recorded

range that moving-coil loudspeakers crossover from using

sound. Many loudspeakers on the market adhere instead to

the mid/bass driver to the high frequency tweeter.

a philosophy of extending the high and low frequencies to make an artificially ‘impressive’ loudspeaker. Such an

The art of a good crossover is simplicity, but for other

approach can sound good in the dealer’s demo room but is

manufacturers the crossover needs to compensate for slight

quickly fatiguing and often masks the more subtle nuances

miss-matches between bought in components – Quad

of a recording.

doesn’t buy in components, we make them all in-house,

Our engineers focus instead on the audible range, ensuring

Our crossovers are extremely simple and retain all of the

so our loudspeakers are designed in perfect synergy.

as smooth as possible an integration between bass and

precious mid-range detail and purity that can so easily be

treble. This is the most crucial region of any loudspeaker’s

lost. We use the highest quality components and windings

frequency response. The human ear is at it’s most sensitive

to ensure nothing is compromised.

Specifications

11L2

12L2