PSW-2500
The multi-purpose PSW2500 active subwoofer has an attractive curved cabinet which is heavily braced to eliminate any unwanted 'box coloration'. Using a 250mm long-throw bass driver and a 250W built in amplifier; this closed box design will deliver ground-shaking effects and depth, whether it is a movie or music. The PSW2500 also incorporates switchable movie/music modes.

The subwoofer will complement any music or multi-channel system, and is available in finishes to complement the Q series range.

Design Closed Box
Drive Units 250mm (10in.) ultra long-throw bass driver
Sensitivity (2.83V/1m) 100mV for full Output
Frequency Response (+/-3dB) 30Hz - 150Hz
Maximum Output 108 dB
Amplifier Requirements 250 W built in
Magnetic Shielding Yes
Internal Volume 15.4litres
Weight 14.5 kg (31.9 lbs)
Dimensions (H x W x D) 360 x 495 x 325 mm (14.2 x 19.5 x 12.8 in.)
Finishes Dark Apple, Black Ash, American Walnut
$749

Kube 2
The KUBE-2 delivers a well defined and impressive bass that is sure to rock any home theatre. The 200W on-board Class-D amplifier has all the flexibility you need for personalising the output with frequency and level adjustments and a ‘Bass Boost' control so any personal preference or room specific conditions can be catered for. The KUBE-2 features a side-firing 250mm (10in.) long-throw bass driver and a complementing 250mm (10in.) ABR and is available in black with a high gloss upper surface.
Design Powered subwoofer
Drive Units 1 x 250mm (10in.) + 1 x 250mm (10in.) ABR
Frequency Response (+/-3dB) 35Hz - 150Hz
Maximum Output 112dB SPL
Internal Volume 23litres
Amplifier 250W built-in Class-D
Weight 12kg (26.5lbs)
Dimensions (H x W x D) 335 x 330 x 330 mm (13.2 x 13.0 x 13.0 in.)
Finishes Black with gloss black upper surface
$899

Reference 209
If you want a home entertainment subwoofer that delivers apocalyptic bass extension with zero distortion, consider Model 209.
Powered by a 1000W amp with DSP-based equalisation and volume, phase, polarity and crossover parameters adjustable by remote control, the 450mm (18in.) Cone has a double radial magnet, a unique dual suspension system, and the effective cabinet volume is virtually doubled by KEF's Acoustic Compliance Enhancement (ACE) technology.

Design Closed Box, magnetically shielded
Drive Units 450mm (18in.) Long-throw LF with radial magnet system allowng +/- 30mm of liner excursion
Sensitivity (2.83V/1m) Active System
Frequency Response (+/-3dB) 15Hz - 250Hz
Maximum Output 120dB
Amplifier Requirements 1000W built in
Magnetic Shielding Yes
Impedance Active System
Bass Extension 12Hz (-6dB)
Weight 51.9kg (114.4 lbs)
Dimensions (H x W x D) 530 x 629 x 629 mm (20.9 x 24.8 x 24.8 in.)
Finishes Piano Black, High Gloss American Walnut, High Gloss Cherry, Satin Black, Satin American Walnut, Satin Cherry and Satin Sycamore real wood veneers
$18000

Reference 208
With no less than 500W of high efficiency Class D amplifier powering a 300mm (12in.) Long throw ultra-low distortion driver, Model 208 floods the listening area with exuberantly extended, immaculately controlled bass. Output, phase and the low pass filter frequency can be adjusted to your preferences. With its acoustically inert hand-finished cabinet, Model 208 reproduces low frequency effects with precision as well as power.

Design Bass reflex, magnetically shielded
Drive Units 1 x 300mm (12in.) long-throw LF
Sensitivity (2.83V/1m) Active System
Frequency Response (+/-3dB) 25Hz - 200Hz
Maximum Output 117dB
Amplifier Requirements 500W built in
Magnetic Shielding Yes
Impedance Active System
Bass Extension 22Hz (-6dB)
Weight 40.2kg (88.4lbs)
Dimensions (H x W x D) 465 x 576 x 579 mm (18.3 x 22.7 x 22.8 in.)
Finishes Piano Black, High Gloss American Walnut, High Gloss Cherry, Satin Black, Satin American Walnut, Satin Cherry and Satin Sycamore real wood veneers, Piano Black
$8500