音响智能化—用这个词来描述 KEF 工程师创造的一系列屡获大奖的 Q 系列新产品是再恰当不过了，并由此更名为：iQ。 当你发现主驱动音盆上的钛膜那柔和光泽的那一刻，你才知道你得到的东西有多特别。
它也绝不令你失望。
我们对KEF商标的 Uni-Q? 技术的内在优点、一贯详细的声像和无与伦比的离轴响应，进行了长期艰苦的观察，并采用几十种改进方法，还采用了新的音盆材料和环绕声系统。
其他改进，如重新设计了磁体结构，采用了最先进的音圈，更高规格的零部件，更加坚固的机箱和箱体。所有以下这些创新听起来很简单：功率处理和灵敏度比以往任何型号都要好；iQ 声音洪亮真实，甚至要比原来优异无比的 Q 系列发音更加清晰；低音更加有劲和对低音控制的更好。当然还有无可挑剔的延伸带宽响应，可以兼容大多数最新的数码音频和家庭影院格式。该系列的每个型号都具有完美的音色匹配，完美融合的3-D音景让坐在房间里任何位置的人都能获得最佳声响效果。

二次谐波失真
交叉频率响应对照
法拉第铃音效果对照

音响智能化
普通音乐爱好者都能领略 Q 系列音箱的不凡音响效果。毕竟，该系列采用了 Uni-Q 技术，这是专为世界上最好的音箱产品－KEF 传奇的 Reference 系列而原创设计的。

Uni-Q 的理念就是采用太空材料制成高音扬声器，它非常小巧，可以放到低音/中音盆的声场中心。两个驱动单元处于同一轴上且共用同一个波导，相当于一个点声源，比起常规的、小小的“最佳听音位置”，在更大的范围内能形成更为自然的声像。

这是因为Uni-Q的配置消除了常规音箱中频和高频驱动单元分离的内在问题。由于音箱的辐射因频率的不同而不同，因此低频和高频驱动单元具有本质不同的辐射模式，其方向性，也就是常说的“Q”，在交叉频率处发生变化。两个单元间的干扰（凸角）会在该频率周围产生功率响应急降，并由于方向性的差异而产生一个峰值。这些因素导致了污染声像的染色效应。使用Uni-Q音箱就不存在这样的问题。由于一致性和完美的时间列队，低频和高频单元的方向由中频音盆控制，在两者之间不会导致通道和相位差异，在交叉处也不会产生“凸角”干扰。
方向性“Q”是一元化的，本系列产品也由此得名。

因此，不像一般的分离驱动单元那样，Uni-Q 的辐射朝着交叉处变窄、再变宽，Uni-Q 的辐射模式保持稳定。功率响应一致，同轴和离轴变化更为平稳。声像在直达声场和混响声场中的声响更加平衡和自然。多声道成像，更加清晰准确。

在 Q 系列 Uni-Q 阵列中加了一个精密的新高音扬声器，它带有铝膜半球形，使谐振失效阈限提高到34kHz（常规标准半球形扬声器的阈限为25kHz）。中频音圈为镀铜铝带，在其聚酰亚胺成形品上有昂贵的饰边，尽可能加大铜在磁隙中的量来增加灵敏度。

机箱采用更具刚性的精密铸铝，并设计了散热孔以改进功率处理能力。高轮廓的音盆环绕设备采用丁基橡胶以允许更大偏差，因而产生更大输出。超低失真马达采用法拉第振铃，进一步降低谐波失真达20分贝之多。高保真级交叉线连接至可接双线的屏蔽端子，以确保最纯净的信号传输。

经过这么多的改进，难怪音域如此宽广，发音如此自然。也难怪对屏幕的作用也突然变得更为引人注目。令人完全沉浸于听觉体验也就更不足为奇了。这就是 Q 系列的所有奉献。

黑灰色
深苹果色
枫木色
在一些市场上，可根据特殊定单要求提供崭新的胡桃木银色喷涂产品。

智能思维，经典之作
Q 系列集如此之多尖端技术于一身，毫不奇怪，它独特的风格还继承着最新的 Reference 系列的特征，更有流线型设计的 Uni-Q 椭圆形断面音箱。这些设计更多的出于功能方面的考虑，而非美学方面的考虑。

平行直面会产生内部声音的反射，进而导致失真，曲线型外壳把这种失真降到最低，但是由于制造技术复杂，因而只有造价昂贵的高保真音箱才具有这种品质。

Q 系列机箱被热成型到“厚重”的主装配架上，主装配架的密度使音箱不易减少声像的有害染色。壁板采用了层压结构技术，用大型机床将内外层粘结到独立的板芯上，经过这样精密的辐射式处理，壁板格外具有刚性，再将流线型Uni-Q 阵列装进机箱。结实的内部拉条专为每个音箱内的容量定制，完全符合驱动单元的参数要求，并将残留的壁板谐振降到最低。

所有型号都有两对完全屏蔽的端子，用于双线接线或二倍放大，并进行磁屏蔽以避免其他电子设备的干扰。

如你所愿，表面喷涂标准堪称典范，有古典黑灰色、深苹果色和枫木色表面可供选择，其柔滑如丝的肌理是同类产品中绝无仅有的。
iQ 5
iQ5 是一款精巧的全程落地式三音路音箱。
130mm (51?4”)中音驱动单元Uni-Q点声源阵列采用 KEF新的130mm (51?4”)长程低频驱动单元，可完美输送规定低音，是清晰再现中音频率的又一奉献。 高位交叉频率确保各个驱动单元间的无缝过渡，再加上 Uni-Q 出众的离轴扩散特性，您今天买到的音箱既易于摆放，又能满足声色之娱，特别适合欣赏现代数字格式音乐的丰满和细腻。

如果你渴望真正的高保真声音再现，iQ5 就是你家庭影院系统中 iQ1 和 iQ2c 的理想搭档。iQ5 具有最佳尺寸设计，细长的箱体及其优异的价值，不愧为音响佼佼者。

iQ 1
新的 iQ1 证明，只要有正确的技术，不需要巨大的音箱，你照样可以享受高保真音效。
在一个较小的房间里，不损害音响精度而获得丰满宽广的音域，正是 KEF 最新设计理念优点的所在。在精巧的反射出口机箱里装有精密、崭新的 130mm (51?4”) Uni-Q 同步驱动阵列，不论你坐在什么位置，你都会体验到震撼人心的清晰的声音，流畅的中音及不同寻常的宽广立体声像。像其他同系列产品一样，iQ1 也经过磁屏蔽处理，更易于摆放。从 Uni-Q 的钛膜音盆表面到屏蔽双线端子，无一不体现了 iQ1 的“质量”，无论听音乐抑或欣赏电影，都恰到好处。

iQ 3
如果空间只能容下一个书架式扬声器而要领略更丰富的音乐再现，iQ3 将 iQ1 的所有性能优点发挥地更为淋漓尽致。
一个稍大的机箱内装配着 KEF 新一代160mm (61?2”) Uni-Q 阵列，人人称道的19mm (3?4”) 铝膜半球形镀钕高音扬声器，使得 iQ3 能完美再现人类声音的微妙之处，并可在很宽广的范围内产生始终精确的声像。悦耳、震撼而没有任何失真的音响效果，把你最喜爱的音乐的更多细节展现给你，让表演更为栩栩如生。

iQ 9
震撼人心是唯一可以形容 iQ9 的词语。
聆听 iQ9，会将你带往另一个地方，这种临场感让你可以感触得到。这个奇特的低音反射落地式音箱采用最新的 160mm (61?2”) Uni-Q 中/高频阵列及新一代高效低频驱动单元。该单元采用超低失真马达和纤维纸盆。毫无瑕疵的发音，美妙的中音和难以置信的低音扩展，还有KEF结实的内部拉条，丝毫没有影响高大音箱的低频失真。对于管弦乐团、大型乐队或是复杂的合成音乐来说，它具有极高的精度和强大的感染力。当与 iQ6c 和 iQ3 或者 iQ7 后置声道扬声器配合使用时，iQ9 就会成为宽敞房间里高档家庭影院不可替代的全频段前置音箱。

iQ 7
作为一款全频段三音路落地式音箱，iQ7 可以说无孔不入，即便是最大的房间，它也能将复杂强烈的物理三维音景散布其间。
规格说明书把各项优点一语道破：采用新一代 Uni-Q 点声源阵列，160mm (61?2”) 钛膜音盆中心装有最新铝膜半球形高音扬声器，与一相同尺寸的专用长程低音驱动单元配套。所有音段的响应都是精确而无失真，流畅的中频发音，丰满的低音扩展，完美的三维成像。与同系列其他产品的音调完美匹配，并有专门设计的屏蔽端子，可以双线布线或二倍放大。
这样诱惑人心的家庭影院从来没有这么超值过。

iQ 2c
家庭影院的效果很大程度上要依赖中声道音箱的质量。此时，KEF Uni-Q 技术的无与伦比的声散特色起到了重要作用。iQ2c 中的130mm (51?4”) Uni-Q 阵列让屏幕上的对话，在房间的任何角落都可以获得相同的清晰度和真实性。与其他 Q 系列产品一样，iQ2c 也配置了双线布线或二倍放大的端子，其流畅的中音和快速的瞬变启动，使其具有高档声频技术的效果，而价格适中。

iQ 6c
如果你真的很在意家庭娱乐，那么选 iQ6 准没错。它一样采用130mm (51?4”) Uni-Q点声源阵列，并配两个相同大小的长程超低失真的低频驱动单元；融合了 KEF 最新 19mm (3?4”)铝膜半球形高音扬声器的高清晰发音和纯净，严密控制的低音扩展及高输出。声音构成的声响范围精确地突显了屏幕上的动作，将房间里的所有人笼罩其中。
动人、清晰的音效及令人陶醉的效果，使 iQ6 能为其他中声道音箱之所不能。

iQ 8ds
与其他具有偶极效应的Q系列音箱一样，在 iQ8ds 结实而流线型的机箱上装着两个130mm (51?4”) Uni-Q 阵列，将编码在数字音轨里的大气效应均匀地扩散到收听区域，形成极为真实可以触摸到的临场感。与其他同系音箱的音色形成完美搭配，它具有无缝过渡的特点，细部表现更是完美无瑕。
简易的锁眼安装系统，确保简便易行。你几乎只需要坐下，开始欣赏它的美妙。

大功率低音炮
由于低频在再现数字格式的三维音域中极为重要，因此对超低音音箱的选择显得至关重要，特别是当你想欣赏电影院里那种音响弥漫四周的效果时。

PSW2500 低音炮
PSW2500 采用250W高效机载放大器驱动 250mm (10") 向下放音的低音扬声器，不需要损害其清晰度就可以展现重低音效果。还采用了接地悬浮开关和电影/音乐模式，声音输出可轻易调节来适应主音箱和房间音学。椭圆形断面箱体采用结实的内部拉条，消除有害的内部谐振，还采用黑色、暗苹果色和枫木色表面喷涂，与 Q 系列系统的其他型号音箱相配。

PSW3500低音炮
当你用300W内部功放通过高保真级电路来驱动 300mm (12”) 长程低音扬声器时，你想获得的是一种强劲震撼的效果。
KEF 的 PSW3500 低音炮正是如此，它将音响范围锚固在一个宽阔、密封、严密控制的低音临场感之内。输出、相位和频率完全可根据个人偏好，通过红外线遥控器调节，独立的传感器可以让你将设备置于你看不到的地方。这是一个巨大的声音表演设备，以其强大的力量，让你坐在椅子上就可以享受你要的音乐。这是一笔对纯粹快感的绝好投资。

规格
iQ 1
二音路低音返射设计
驱动单元：Uni-Q，130mm (51?4”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：50Hz - 40kHz
交叉频率：2.8kHz
放大器频率要求：10-100W
灵敏度：（2.83V/1m）88dB
最大输出：108dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：4.5kg (9.9磅)
外形尺寸：301 ×175 × 261 mm
高×宽×厚=11.8 × 6.9 × 10.3英寸
iQ 3
二音路低音返射设计
驱动单元：Uni-Q，165mm (61?2”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：45Hz - 40kHz
交叉频率： 2.8kHz
放大器频率要求：15-120W
灵敏度：（2.83V/1m）89dB
最大输出：110dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：6.7kg (14.8磅)
外形尺寸：365 × 220 × 327 mm
高×宽×厚=14.4 × 8.7 × 112.9英寸
iQ 5
三音路低音返射设计
驱动单元：低频单元：130mm (51?4”)
Uni-Q：130mm (51?4”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：43Hz - 40kHz
交叉频率：280Hz - 2.8kHz
放大器频率要求：15-130W
灵敏度：（2.83V/1m）88dB
最大输出：109dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：10.2kg (22.5磅)
外形尺寸：815 × 175 × 261 mm
高×宽×厚=32 × 6.9 × 10.3英寸
iQ 7
三音路低音返射设计
驱动单元：低频单元：165mm (61?2”)
Uni-Q：165mm (61?2”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：40Hz - 40kHz
交叉频率：250Hz - 2.8kHz
放大器频率要求：15-150W
灵敏度：（2.83V/1m）90dB
最大输出：111dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：14.5kg (32.0磅)
外形尺寸：865 × 220 × 327 mm
高×宽×厚=34 × 8.7 × 112.9英寸
iQ 9
三音路低音返射设计
驱动单元：低频单元：2×165mm (61?2”)
Uni-Q：165mm (61?2”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：38Hz - 40kHz
交叉频率：250Hz - 2.8kHz
放大器频率要求：15-200W
灵敏度：（2.83V/1m）91dB
最大输出：113dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：16.6kg (36.6磅)
外形尺寸：942 × 220 × 327 mm
高×宽×厚=37 × 8.7 × 112.9英寸

iQ 2c
二音路低音返射设计
驱动单元：Uni-Q，130mm (51?4”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：70Hz - 40kHz
交叉频率： 2.8kHz
放大器频率要求：10-100W
灵敏度：（2.83V/1m）89dB
最大输出：109dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：4.7kg (10.3磅)
外形尺寸：165 × 418 × 220 mm
高×宽×厚=6.5 × 16.4 × 8.7英寸
iQ 6c
三音路低音返射设计
驱动单元：低频单元：2×130mm (51?4”)
Uni-Q：130mm (51?4”)
高频铝膜半球形扬声器：19mm (3?4”)
频率响应：65Hz - 40kHz
交叉频率：280Hz - 2.8kHz
放大器频率要求：15-150W
灵敏度：（2.83V/1m）90dB
最大输出：111dB
标称阻抗：8? (min 3.2?)
磁屏蔽：有
重量：8.9kg (19.6磅)
外形尺寸：165 × 512 × 255 mm
高×宽×厚=6.5 × 20.1 × 10英寸
iQ 8ds
二音路密闭式箱体设计
驱动单元：Uni-Q，130mm (51?4”)
高频铝膜半球形扬声器：2 × 19mm (3?4”)
频率响应：65Hz - 40kHz
交叉频率： 2.8kHz
放大器频率要求：10-100W
灵敏度：（2.83V/1m）83dB
最大输出：103dB
标称阻抗：8? (min 3.2?)
磁屏蔽：无
重量：5.2kg (11.5磅)
外形尺寸：180 × 360 × 175 mm
高×宽×厚=7.1 × 14.2 × 6.7英寸
PSW2500
密闭式箱体设计，向下发射
驱动单元：250mm (10”) 超长程低音驱动单元
频率响应：33Hz -150Hz
交叉频率：可变
放大器要求： 250W ，内置
灵敏度： (2.83V/1m) 100mV，满负荷
最大输出：108dB
标称阻抗：无
磁屏蔽：有
重量：14.5kg (31.9磅)
外形尺寸：360 × 495 × 325 mm
高×宽×厚=14.2 × 19.5 × 12.8英寸
PSW3000
封闭式箱体设计，向下发射
驱动单元：300mm (12”) 超长程低音驱动单元
频率响应：30Hz -250Hz
交叉频率：可变/低频响应
放大器要求： 300W ，内置
灵敏度： (2.83V/1m) 100mV，满负荷
最大输出：110dB
标称阻抗：无
磁屏蔽：有
重量：22.5kg (49.6磅)
外形尺寸：450 × 600 × 395 mm

Acoustic intelligence - that’s the best way to describe what KEF engineers have applied to create a new range worthy of the award-winning Q Series it replaces. Hence the name: iQ.
From the second you spot the soft sheen of titanium on the main driver cones, you know you’re in for something special.
And you won’t be disappointed.
Because we’ve taken a long, hard look at the inherent advantages of KEF’s trademark Uni-Q? technology - consistently detailed imaging and unrivalled off-axis response - and improved it in dozens of ways. With new cone materials and surrounds.
Redesigned magnet structures. New, state-of-the-art voice coils. Higher specification components. More rigid chassis and cabinets. The result of all these innovations is plain to hear. Power handling and sensitivity are better than ever. iQ plays loud and true, with even clearer vocals than its illustrious redecessor. Even gutsier and more tightly controlled bass. And of course the impeccable extended bandwidth response you need to get the most out of the latest digital audio and home theatre formats.
As every model in the range is voiced for a perfect tonal match, the 3-D soundscape is so seamlessly integrated that everyone in the room gets the full benefit, wherever they sit.

SECOND HARMONIC DISTORTION
comparison of response at crossover frequency
comparison of Faraday ring effect

Acoustic intelligence
You don’t have to be a genius to understand why Q Series speakers sound so good. After all, they incorporate the Uni-Q technology originally designed for one of the world’s finest speaker ranges, KEF’s legendary Reference Series.

The Uni-Q concept is based on using aerospace materials to make the tweeter small enough to place at the acoustic centre of the bass/midrange cone. With both drive units on exactly the same axis and sharing the same waveguide, they behave as a single point source that projects a more natural sound image over a much larger area than the usual tiny ‘sweet spot’.

This is because the Uni-Q configuration eliminates the inherent problems of having the separate midrange and high frequency drive units of a conventional speaker. As loudspeaker radiation varies according to frequency, LF and HF drivers have intrinsically different radiation patterns whose directivity - known as ‘Q’ - changes at the crossover frequency. Interference (or ‘lobing’) between the two units causes a dip in power response around this frequency, with a peak above it due to their differences in directivity. These factors introduce colourations that muddy the sound image. You get no such problems with Uni-Q. Being coincident and perfectly time-aligned,the directivity of both LF and HF units is controlled by the profile of the midrange cone, with no possible path or phase differences between the two, and no ‘lobing’ interference at the crossover.
The ‘Q’ is unified, in other words - hence the name.

So instead of narrowing towards the crossover and then widening again as is the case with separate drive units, the Uni-Q radiation pattern remains stable. Power response is uniform, with smoother variations on and off-axis. The acoustic image is better balanced and more natural sounding across both direct and reverberant fields. Multi-channel imaging is noticeably clearer and more accurate.

The Uni-Q array in the Q Series incorporates a sophisticated new tweeter with an aluminium dome that increases the break-up resonance to 34kHz (as compared to the 25kHz threshold of a typical standard dome). The MF voice coil is of copper-coated aluminium ribbon, expensively edge-wound over a polyimide former to increase sensitivity by maximising the amount of copper in the magnet gap.

The chassis are of precision-cast aluminium for greater rigidity, with a vented design to improve power handling. The tall profile cone surrounds are of butyl rubber to allow greater excursion, and therefore higher output. Faraday rings are incorporated into the ultra-low distortion motor, further reducing? harmonic distortion by as much as 20dB. And audiophile-grade crossovers are connected to the shrouded bi-wirable terminals to ensure the cleanest possible signal transmission.

With refinements like these, no wonder the sound is so open and natural. No wonder the action
on screen suddenly becomes more compelling. No wonder you get so utterly immersed in the
listening experience. It’s what Q Series is all about.

Black Ash
Dark Apple
Maple
Brand newWalnut and Silver finishes are available subject to special order in certain markets.

Smart thinking
With so much high-end technology inside, it’s not surprising that the Q’s distinctive styling bears a family resemblance to the latest Reference Series, with the Uni-Q ‘pod’ faired in to elliptical-section cabinets.The design was driven by functional considerations rather than aesthetics.

Curved enclosures minimise distortion from the internal acoustic reflections generated by parallel straight
surfaces - but because they’re complicated to make, the benefit is usually reserved for the most expensive
audiophile speakers.

Q Series cabinets are thermally formed in ‘heavy’ MDF, whose density makes it acoustically inert to reduce unwanted colouration of the sound image. Using laminated construction techniques, with inner and outer layers bonded to a segmented core in a giant press, the precisely radiused panels are exceptionally rigid, with the Uni-Q arrays faired in to the cabinet. Massive internal bracing tailors the volume of each enclosure to the exact parameters of its drive unit and minimises any residual panel resonance.

All models have two pairs of fully shrouded terminals for bi-wiring or bi-amplification, and are magnetically shielded to prevent interference with other electronics.

As you’d expect, the standard of finish is exemplary, with a choice of classic Black Ash, Dark Apple and Maple -a silky contemporary grain found on no other range.
iQ 5
A compact full range floorstander, the iQ5 is a true three-way speaker.
With KEF’s new 130mm (51?4”) long-throw LF driver delivering superbly defined bass,the midrange driver of the 130mm (51?4”) Uni-Q point source array is dedicated to reproducing midrange frequencies with even greater clarity. High order crossovers ensure seamless transitions between each driver, and with Uni-Q’s remarkable off-axis dispersion characteristics, you get a speaker that’s as easy to place as it is rewarding to hear - especially for enjoying the richness and complexity of modern digital formats.
Ideal for use with iQ1 and iQ2c in a home theatre system, it’s a superbly assertive performer for the modest size of its slender cabinet and outstanding value if you aspire to genuine audiophile standards of sound reproduction.
iQ 1
The new iQ1 proves that with the right technology, you don’t need big boxes to enjoy audiophile quality sound.
If you want to create a rich, expansive soundscape in a smaller room without compromising sonic accuracy, it delivers the full benefit of KEF’s latest design thinking. With the sophisticated new 130mm (51?4”) Uni-Q coincident driver array in a compact reflex-ported cabinet, you experience stunningly clear vocals, fluid midrange and an unusually spacious 3D sound image no matter where you sit. Being magnetically shielded like the rest of the range, they’re as easy to place as they are to drive. Everything from the titanium surface of the Uni-Q cones to the shrouded bi-wire terminals says ‘quality’ - and for music or movies, that’s exactly how iQ1 sounds.
iQ 3
For even fuller presentation where the available space nevertheless dictates a bookshelf speaker,
iQ3 takes all the performance advantages of the iQ1 a step further.
A slightly larger cabinet houses KEF’s new generation 160mm (61?2”) Uni-Q array, complete with
its acclaimed 19mm (3?4”) aluminium dome neodymium tweeter. It’s uncannily good at reproducing
all the subtleties of the human voice, and creates a consistently accurate sound image over an
exceptionally wide area. Musical, efficient and virtually distortion-free, it reveals more detail in your
favourite tracks and brings screen action more vividly to life.
iQ 9
Breathtaking is the only word to describe it.
Hearing the iQ9 in action takes you to a different place - the illusion of presence is phenomenal. This awesome full size bass reflex floorstander partners the latest 160mm (61?2”) Uni-Q mid/HF array with a brace of potent new generation LF drivers featuring ultra-low distortion motors and natural fibre-loaded paper cones. Impeccable vocals, delicious midrange and incredible bass extension - and with KEF’s massive internal bracing, none of the LF distortions that usually affect tall speakers. For orchestral, big band or compositionally intricate works, we’re talking devastating accuracy and emotional power.
And when complemented by the iQ6c and either iQ3 or iQ7 rear channel speakers, iQ9 is a formidably competent full bandwidth front speaker for large room, high-end home theatre.
iQ 7
A full bandwidth three-way floorstander that packs real punch, iQ7 floods even the largest room with an intricate and intensely physical 3D soundscape.
The spec says it all: a new generation Uni-Q point source array with our latest aluminium dome tweeter at the centre of the matching titanium-coated 160mm (61?2”) cone, partnered by a dedicated long-throw bass driver of the same size. Response is accurate and distortion-free at all volumes, with fluidly articulate midrange, generous bass extension and faultless 3-D imaging. The tonal match is perfect with the rest of
the range, and the shrouded terminals are designed for bi-wiring or bi-amplification.
Spine-tingling home theatre has never been more affordable.
iQ 2c
The pleasures of home cinema depend largely on the quality of your centre channel speaker. This is an area where the unrivalled dispersion characteristics of KEF Uni-Q technology make a real difference - the 130mm (51?4”) Uni-Q array in the iQ2c projects on-screen dialogue with equal clarity and realism throughout the room. Configured for bi-wiring or even bi-amplification like all the Q Series, its smooth midrange and fast transient attack delivers the listening enjoyment of high-end audio technology at a surprisingly modest price.
iQ 6c
If you’re really serious about home entertainment, iQ6 is the way to go. With the same 130mm (51?4”) Uni-Q point source array flanked by two equally large long-throw, ultra-low distortion LF drivers, it combines the startling vocal clarity of KEF’s latest aluminium dome 19mm (3?4”) tweeter with clean, tightly controlled bass extension and high output. Screen action is precisely located in a densely textured 3-D soundscape that envelops everyone in the room.
Eloquent, authoritative and deeply involving, it touches the parts other centre channels simply can’t reach.
iQ 8ds
As the dipole rear effects speaker for the Q Series, the two 130mm (51?4”) Uni-Q arrays in the heavily braced curved cabinets of the iQ8ds disperse atmospheric effects encoded in digital soundtracks evenly throughout the listening area to create a sense of place so real you can almost touch it. Perfectly timbre-matched to the rest of the range, transitions are seamless and the detailing is impeccable.
A simple keyhole mounting system allows effortlessly quick wall installation. Sit back and enjoy.

Powered Subwoofers
As the lower frequencies play such a big part in recreating the 3-D soundscape encoded in digital formats,
your choice of subwoofer is critical - especially if you want to enjoy the level of sonic immersion you experience in a modern cinema.

PSW2500
With a high efficiency 250W on-board amplifier driving a 250mm (10") down-firing woofer, PSW2500 has the power to deliver heavyweight bass effects without sacrificing clarity. With ground lift switching and movie/music modes, output is easily adjustable to match the main speakers and room acoustics. The elliptical-section cabinet is massively internally braced to eliminate unwanted internal resonance, and finished in Black, Dark Apple or Maple to complement the rest of your Q Series system.
PSW3500
When you have a 300-watt internal power amp driving a 300mm (12”) long-throw woofer through audiophile grade circuitry, you expect the earth to move.
KEF’s PSW3500 does just that, anchoring the soundscape in a huge, all-enveloping and perfectly controlled bass presence. Output, phase and frequency are fully adjustable to your personal preferences via infrared remote, with a separate sensor that allows you to place the unit completely out of sight. A prodigious acoustic performer with the power to keep you on the edge of your seat, it’s an investment in pure pleasure.

Specifications
iQ 1
Design Two-way bass reflex
Drive units 130mm (51?4”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 50Hz - 40kHz
Crossover frequency 2.8kHz
Amplifier requirements 10 - 100W
Sensitivity (2.83V/1m) 88dB
Maximum output 108dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 4.5kg (9.9lbs)
Dimensions 301 x 175 x 261 mm
H xW x D 11.8 x 6.9 x 10.3 in.
iQ 3
Design Two-way bass reflex
Drive units 165mm (61?2”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 45Hz - 40kHz
Crossover frequency 2.8kHz
Amplifier requirements 15 - 120W
Sensitivity (2.83V/1m) 89dB
Maximum output 110dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 6.7kg (14.8lbs)
Dimensions 365 x 220 x 327 mm
H xW x D 14.4 x 8.7 x 12.9 in.
iQ 5
Design Three-way bass reflex
Drive units 130mm (51?4”) LF
130mm (51?4”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 43Hz - 40kHz
Crossover frequency 280Hz - 2.8kHz
Amplifier requirements 15 - 130W
Sensitivity (2.83V/1m) 88dB
Maximum output 109dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 10.2kg (22.5lbs)
Dimensions 815 x 175 x 261 mm
H xW x D 32 x 6.9 x 10.3 in.
iQ 7
Design Three-way bass reflex
Drive units 165mm (61?2”) LF
165mm (61?2”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 40Hz - 40kHz
Crossover frequency 250Hz - 2.8kHz
Amplifier requirements 15 - 150W
Sensitivity (2.83V/1m) 90dB
Maximum output 111dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 14.5kg (32.0lbs)
Dimensions 865 x 220 x 327 mm
H xW x D 34 x 8.7 x 12.9 in.
iQ 9
Design Three-way bass reflex
Drive units 2 x 165mm (61?2”) LF
165mm (61?2”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 38Hz - 40kHz
Crossover frequency 250Hz - 2.8kHz
Amplifier requirements 15 - 200W
Sensitivity (2.83V/1m) 91dB
Maximum output 113dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 16.6kg (36.6lbs)
Dimensions 942 x 220 x 327 mm
H xW x D 37 x 8.7 x 12.9 in.

iQ 2c
Design Two-way bass reflex
Drive units 130mm (51?4”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 70Hz - 40kHz
Crossover frequency 2.8kHz
Amplifier requirements 10 - 100W
Sensitivity (2.83V/1m) 89dB
Maximum output 109dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 4.7kg (10.3lbs)
Dimensions 165 x 418 x 220 mm
H xW x D 6.5 x 16.4 x 8.7 in.
iQ 6c
Design Three-way bass reflex
Drive units 2 x 130mm (51?4”) LF
130mm (51?4”) Uni-Q
19mm (3?4”) aluminium dome HF
Frequency response 65Hz - 40kHz
Crossover frequency 280Hz - 2.8kHz
Amplifier requirements 15 - 150W
Sensitivity (2.83V/1m) 90dB
Maximum output 111dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding Yes
Weight 8.9kg (19.6lbs)
Dimensions 165 x 512 x 255 mm
H xW x D 6.5 x 20.1 x 10 in.
iQ 8ds
Design Two-way closed box
Drive units 2 x 130mm (51?4”) Uni-Q
2 x 19mm (3?4”) aluminium dome HF
Frequency response 65Hz - 40kHz
Crossover frequency 2.8kHz
Amplifier requirements 10 - 100W
Sensitivity (2.83V/1m) 83dB
Maximum output 103dB
Nominal impedance 8? (min 3.2?)
Magnetic shielding No
Weight 5.2kg (11.5lbs)
Dimensions 180 x 360 x 175 mm
H xW x D 7.1 x 14.2 x 6.7 in.
PSW2500
Design Closed Box, downward firing
Drive units 250mm (10”) ultra long-throw
bass driver
Frequency response 33Hz - 150Hz
Crossover frequency Variable
Amplifier requirements 250W built in
Sensitivity (2.83V/1m) 100mV for full output
Maximum output 108dB
Nominal impedance N/A
Magnetic shielding Yes
Weight 14.5kg (31.9lbs)
Dimensions 360 x 495 x 325 mm
H xW x D 14.2 x 19.5 x 12.8 in.
PSW3000
Design Closed Box, downward firing
Drive units 300mm (12”) ultra long-throw
bass driver
Frequency response 30Hz - 250Hz
Crossover frequency Variable/LFE
Amplifier requirements 300W built in
Sensitivity (2.83V/1m) 100mV for full output
Maximum output 110dB
Nominal impedance N/A
Magnetic shielding Yes
Weight 22.5kg (49.6lbs)
Dimensions 450 x 600 x 395 mm
H xW x D 17.7 x 23.6 x 15.6 in.