Q Series - stoneaudio.co.uk
Q Series
1
For decades audiophiles around
the world have revered KEF (Kent
Engineering and Foundry) for
its innovative, high-performance
loudspeakers. The company was
founded in 1961 by Raymond
Cooke OBE (1925-1995),
a former BBC electrical engineer,
widely acknowledged in the audio
industry as a leading authority in
transducer technology.
an unrivalled pedigree
The pioneering inventiveness of
KEF loudspeakers was undeniable.
During the 1960s and early 1970s,
KEF’s reputation was further
enhanced by its outstanding
performance. From the mid 1960s,
KEF collaborated with the BBC in
developing new materials for
high-end loudspeakers - the results
being embodied in the classic
LS3/5a monitor which generated
worldwide sales of more than
100,000 systems.
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KEF’s Uni-Q® technology was
introduced in 1988 and since then
KEF has maintained its position at
the forefront of loudspeaker and
home theatre systems.
The core values of KEF: innovation,
quality and performance have
ensured that KEF has one of the
best international reputations for
audio excellence.
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The multiple award-winning
Q Series has always exemplified
KEF’s conviction that new materials
and technologies can, when applied
with intelligence and imagination,
reproduce recordings so perfectly
that they sound indistinguishable
from the live event. This is more
true now than ever before.
As the latest expression of this
design philosophy, the new range
immerses you in three-dimensional
imagery of a richness and clarity
that until now has been the
exclusive preserve of speakers
costing many times more.
a class above
The all new Q Series from KEF
represents a quantum leap in
terms of listening pleasure.
At its heart is a brand new Uni-Q
driver array. Derived from the
Concept Blade project, with a new,
larger, high performance vented
tweeter mounted at the acoustic
centre of a new metal cone LF/MF
driver, it combines lavishly
extended bandwidth with
effortless dynamics, imperceptible
distortion and outstanding
acoustic clarity.
exceptionally realistic sonic
imaging, wherever they sit.
And with 30% larger capacity
cabinets for even gutsier bass
and minimalist crossovers assuring
deliciously fluid transitions,
new Q is both more eloquent
and more emotive than its
illustrious predecessor.
Movies or music, Mahler or
Massive Attack, what you
experience is the captivatingly
sweet, accurate and natural live
sound of the original performance.
These are speakers with the
power to strike a chord in your
heart. Off-axis dispersion is
unrivalled, so everyone in the
room enjoys the same
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All new
Uni-Q array.
Sweet, spacious and true,
wherever you sit.
Thanks to the latest computer
modelling techniques, years of
painstaking development and a
dash of design genius, the new
iteration of the Uni-Q concept
packs a formidable complement
of design innovations. Based on
the state-of-the-art HF driver
developed for Concept Blade,
the new Q boasts a much larger
(25mm/1in. dome) tweeter
for increased sensitivity and
distortion-free power handling.
It plays as loud as it plays true.
At lower frequencies,
the superlight new aluminium
cone of the LF/MF drive unit
delivers noticeably faster, cleaner
response. This is enhanced by KEF’s
unique Z-flex surround, which
allows the extreme excursions
needed to deliver a truly visceral
thump while also maintaining a
seamlessly smooth surface to
disperse the high frequencies from
the tweeter.
The ensemble is a masterpiece
of modern acoustic engineering.
Vocals suddenly seem much more
immediate – more open and
natural. Surrounded by sound
of such clarity, you start hearing
things you never did before.
Nuances in the way an
instrument’s played. The sound
of a distant cricket in an outside
scene. A breath, even.
The brilliantly innovative
engineering of the new Q Series
surrounds you with a spacious
sonic image of astonishing purity.
technology with soul
A groundbreaking new Uni-Q
array that conjures up a fluent,
spacious and incredibly realistic
3D sound stage you can enjoy
wherever you sit. A spectacular
new high performance LF driver
that delivers deeper, cleaner and
more accurate bass.
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And a ‘total design’ approach, with
obsessive attention to detail and
the pleasures of ownership. These
are the qualities that set the new
Q Series apart.
The vented tweeter design allows
upper registers to be reproduced
with startling clarity and smoothes
the transition to midrange
frequencies. The dome assembly is
cleverly braced, pushing the first
breakup beyond the audible range
so that the sound you hear is
flawlessly accurate. And to make
sure everyone in the room enjoys
the benefit, KEF’s distinctive
‘tangerine’ waveguide over the
dome maximises Uni-Q’s
exceptionally wide dispersion
characteristics.
And best of all, you don’t have
to be in a little ‘sweet spot’ to
experience it. With KEF Uni-Q,
you can sit where you want and
not miss a thing. All you hear is
what the artist intended.
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Total system
design.
A holistic approach with
no compromises.
The performance envelope of
these sensational new drive units
is so generous that the signal
needs minimal intermediation –
simple first order crossovers are
all that’s required, as you can tell
from the transparency of the
sound and the inaudibly
fluent transitions.
Advanced bass
technologies.
Deeper, tighter and more
accurate bass.
Featuring rigid new aluminium
cone technology just like the
Uni-Q array, the new Q Series
advanced bass driver is a tour de
force in its own right. A die-cast
aluminium chassis rigidly locates
the high efficiency vented magnet
assembly to prevent unwanted
resonance, and the large (50mm)
voice coil ensures impressive
power handling. Its musicality
is impeccable: seductively
tuneful and well controlled, and
on the floorstanding models,
complemented by dedicated
front-firing auxiliary bass
radiators (ABRs).
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Deep, fast and powerful, this
outstanding bass response is
enhanced by new enclosures
with massive internal bracing to
eliminate resonance – and
importantly, over 30% more
volume than their predecessors.
For movie effects, this noticeably
enhances the realism of the sound
when combined with the newly
assertive midrange.
You can see KEF’s legendary
attention to detail everywhere.
Gold plated bi-wire terminals for
the clearest possible signal
transmission, for example. Or the
spikes on the floorstanders –
they’re adjustable from the top
instead of the bottom to make
levelling easier. Thoughtful touches.
As you might expect from a
company of perfectionists, we see
more to the ownership
experience than simply luxuriating
in the best possible sound. We
think about the environment too.
When you unpack your new Q
speakers, you’ll find that the
packaging that protects them is
ecologically sound. Because the
crossover circuit boards are
smaller, the materials impact
is reduced.
This total design approach is
another aspect of the difference
with KEF. It’s all about weaving
truly great sound into the fabric of
the lives we live now.
And when you admire their
sumptuous finish – in Black Oak,
English Cherry or European
Walnut – you can do so in the
knowledge that what looks like a
fine exotic hardwood veneer is in
fact recycled wood fibre.
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Q500.
Q700.
Q900.
Floorstanders.
towering performers
There are three full-size new Q
floorstanders to choose from,
each sharing the same audiophilegrade technology in the same
basic configuration: a new
generation Uni-Q MF/HF array
paired with a long-throw bass
driver of equal size, and two
matching ABRs.
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The difference is the size of the
drivers: 130mm (5.25in.) diameter
in the Q500, 165mm (6.5in.) in the
intermediate Q700 and a classbeating 200m (8in.) in the flagship
of the range, the magisterial Q900.
As front speakers in a home
theatre system, these effortlessly
assertive performers are capable
of flooding the room with an
intricate and intensely
physical soundstage.
As a viewer, you notice the striking
clarity of the vocals and fluidly
articulate midrange response.
With massive bass extension
heightening the drama and flawless
3-D imaging that faithfully tracks
the action on screen, the illusion
of being there is phenomenal.
All you have to do is decide
which model is best for you,
bearing in mind the size of the
space and your personal
listening preferences.
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Q100.
Q300.
Bookshelf models.
compact versatility
Whether as main speakers,
music speakers for your study or
family room, rear speakers in a
home theatre system or general
purpose speakers for multi-room
set-ups, the two new Q bookshelf
models open up a world of
audiophile quality sound at a
surprisingly affordable price.
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The sound they make is even
more surprising: lush, spacious and
precisely defined, with compelling
midrange/HF response and solid,
immaculately controlled bass.
The two models – Q100, with a
130mm (5.25in.) Uni-Q array and
Q300 with the 165mm (6.5in.)
variant – deliver all the benefits
of the Uni-Q ‘point source’
configuration in its latest and
most refined form: a more
accurate sound image dispersed
more evenly throughout the room
than is possible with any
conventional speaker.
Subjectively, it makes a huge
difference. Because everyone in
the room is enveloped in the
same beautifully integrated
three-dimensional sound image,
viewing becomes more of a
shared experience – and you no
longer have to stay in the same
spot to get the full enjoyment
from your favourite tracks.
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Q400b.
Q200c.
Q600c.
Q800ds.
Centre and dipole rear effects speakers and the
powered subwoofer.
home theatre
redefined
Reproducing most of the
soundtrack narrative, the centre
speaker is by far the most
important in any home theatre
surround sound system,
and the Q200c and Q600c are
engineered accordingly.
With a new generation 130mm
(5.25in.) and 165mm (6.5in.)
Uni-Q driver array respectively,
flanked by a low distortion bass
unit and an ABR of the same size,
they combine raw power with the
subtlety to convey moments of
great delicacy.
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What you notice is how
convincingly the larger new metal
dome tweeter captures the
emotional range of the human
voice – mood and character shine
through with real clarity.
Your involvement in the action is
noticeably enhanced by the
addition of the Q800ds dipole to
convey the left and right rear
channels. With the two 130mm
(5.25in.) Uni-Q arrays on each
speaker playing out of phase,
ambient 3D effects are completely
diffused throughout the listening
area to create an uncanny illusion
of actually being there, whether
that’s deep in the rainforest, in a
concert arena or driving along a
gritty urban back street.
The final ingredient of your
new Q system is of course the
seductive Q400b subwoofer.
A closed box design housing a
250mm (10in.) woofer driven by a
200W on-board Class-D
amplifier, this discreet cube
creates spectacular bass imagery –
eloquent, musical and addictively
physical. Anchoring the whole
sound performance in an allembracing sensation of immediacy,
it completes the acoustic picture.
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Q500 5.1 Package.
Q300 5.1 Package.
Q100 5.1 Package.
Q700 7.1 Package.
Q900 7.1 Package.
the perfect system
for your space
You want your home
entertainment audio system to get
the best out of high definition TV,
3D technologies and other new
broadcasting and replay formats –
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and with a range that includes
three full-size floorstanding
models, two versatile bookshelf
speakers, a dipole rear effects
speaker and a magnificent
powered sub, you can configure a
Q Series 5.1 or 7.1 system that
exactly suits your budget, room
size and personal preferences.
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specifications
English Cherry.
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Black Oak.
European Walnut.
Model
Q900
Q700
Q500
Q300
Q100
Q600c
Q200c
Q800ds
Q400b
Design
Two and a half-way bass reflex
Two and a half-way bass reflex
Two and a half-way bass reflex
Two-way bass reflex
Two-way bass reflex
Three-way bass reflex
Three-way bass reflex
Three-way dipole
Closed-box subwoofer
Drive units
200mm (8in.) aluminium Uni-Q
165mm (6.5in.) aluminium Uni-Q
130mm (5.25in.) aluminium Uni-Q
165mm (6.5in.) aluminium LF
130mm (5.25in.) aluminium LF
25mm (1in.) vented aluminium
dome HF
25mm (1in.) vented aluminium
dome HF
200mm (8in.) aluminium LF
25mm (1in.) vented
aluminium dome HF
25mm (1in.) vented aluminium
dome HF
2 x 130mm (5.25in.) aluminium
Uni-Q
1 x 250mm (10in.)
25mm (1in.) vented aluminium
dome HF
130mm (5.25in.) aluminium
Uni-Q
130mm (5.25in.) aluminium Uni-Q
25mm (1in.) vented aluminium
dome HF
165mm (6.5in.) aluminium
Uni-Q
165mm (6.5in.) aluminium Uni-Q
38mm (1.5in.) vented aluminium
dome HF
165mm (6.5in.) aluminium LF
130mm (5.25in.) aluminium LF
2 x 25mm (1in.) vented
aluminium dome HF
2 x 200mm (8in.) aluminium ABR
2 x 165mm (6.5in.) aluminium ABR
2 x 130mm (5.25in.) aluminium ABR
165mm (6.5in.) aluminium ABR
130mm (5.25in.) aluminium ABR
Frequency response (±3dB)
32Hz - 40kHz
36Hz - 40kHz
40Hz - 40kHz
42Hz - 40kHz
49Hz - 40kHz
45Hz - 40kHz
50Hz - 40kHz
100Hz - 40kHz
28Hz - 140Hz
Crossover frequency
1.8kHz
2.5kHz
2.5kHz
2.5kHz
2.5kHz
500Hz, 2.5kHz
500Hz, 2.8kHz
300Hz, 2.5kHz
N/A
Amplifier
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
200W built-in Class-D
Amplifier requirements
15 - 200W
15 - 150W
15 - 130W
15 - 120W
10 - 100W
15 - 150W
15 - 130W
10 - 100W
N/A
Sensitivity (2.83V/1m)
91dB
89dB
87dB
87dB
86dB
87dB
85dB
85dB
N/A
Maximum output (SPL)
114dB
112dB
110dB
110dB
107dB
110dB
108dB
107dB
110dB
Impedance
8Ω
8Ω
8Ω
8Ω
8Ω
8Ω
8Ω
8Ω
N/A
Low pass filter variable
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
40Hz - 140Hz, 4th-order
Low level signal inputs
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
RCA phono sockets
Internal volume
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
23.2 litres
Power requirements
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
100 - 240V ac ~ 50/60Hz
Power consumption
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
200VA
Weight
22.1kg (48.7lbs)
17.2kg (37.9lbs)
15kg (33.1lbs)
7.7kg (17.0lbs)
5.9kg (13.0lbs)
14.1kg (31.1lbs)
11.0kg (24.3lbs)
7.4kg (16.3lbs)
13.6kg (29.9lbs)
Dimensions
(H x W x D)
1060 x 244 x 322 mm
(41.7 x 9.6 x 12.7 in.)
920 x 210 x 302 mm
(36.2 x 8.3 x 11.9 in.)
870 x 180 x 272 mm
(34.3 x 7.1 x 10.7 in.)
355 x 210 x 302 mm
(14.0 x 8.3 x 11.9 in.)
300 x 180 x 272 mm
(11.8 x 7.1 x 10.7 in.)
210 x 629 x 302 mm
(8.3 x 24.8 x 11.9 in.)
180 x 525 x 260 mm
(7.1 x 20.7 x 10.2 in.)
180 x 348 x 180 mm
(7.1 x 13.7 x 7.1 in.)
335 x 330 x 330 mm
(13.2 x 13.0 x 13.0 in.)
Dimensions with plinth
(H x W x D)
1107 x 359 x 322 mm
(43.6 x 14.1 x 12.7 in.)
967 x 325 x 312 mm
(38.1 x 12.8 x 12.3 in.)
917 x 295 x 312 mm
(36.1 x 11.6 x 12.3 in.)
N/A
N/A
N/A
N/A
N/A
N/A
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www.kef.com
United Kingdom
GP Acoustics (UK) Limited
Eccleston Road, Tovil, Maidstone,
Kent, ME15 6QP U.K.
Telephone: + 44 (0) 1622 672261
Fax: + 44 (0) 1622 750653
Email: info@kef.com
China
GP Acoustics (China) Limited
Unit 4910, Diwang Commercial Centre,
Shenzhen, China 518008.
Telephone: +86 (755) 8246 0746
Fax: +86 (755) 8246 0125
Email: info.prc@gpe-hkg.com
Europe (EMEA)
GP Acoustics GmbH
Am Brambusch 22, 44536, Lünen,
Deutschland.
Telephone: +49 (0) 231 9860-320
Fax: +49 (0) 231 9860-330
Email: sales@gpaeu.com
France
GP Acoustics (France) SAS
39 Rue des Granges Galand - BP60414,
37554 Saint Avertin CEDEX, France.
Telephone: +33 (0) 2 47 80 49 01
Fax: +33 (0) 2 47 27 89 64
Email: info.france@kef.com
Hong Kong
GP Acoustics (HK) Limited
6F, Gold Peak Building,
30 Kwai Wing Road, Kwai Chung,
N.T., Hong Kong.
Telephone: +852 2410 8188
Fax: +852 2401 0754
Email: info@gpacoustics.com.hk
Japan
KEF JAPAN, 1-11-17, Honcho, Koganei-city,
Tokyo, Japan. 184-0004.
Telephone: +81 (0) 42-388-2030
E-mail: info@kef.jp
USA
KEF and Uni-Q are registered trademarks. Uni-Q
and other KEF technologies are protected by
worldwide patents. All text and image copyrights
reserved. KEF reserves the right, in line with
continuing research and development, to amend
or change specifications. E&OE.
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PM-Q-LB-EN-10
GP Acoustics (US) Inc.,
10 Timber Lane, Marlboro,
New Jersey 07746 U.S.A.
Telephone: +1 (732) 683 2356
Fax: +1 (732) 683 2358
Email: sales@kefamerica.com
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