Reference 8b



Bass Drivers

Featuring two ultra-low distortion 9 inch bass drivers the Reference 8b Subwoofer has the power and accuracy to bring your theater to life. Using KEF’s ingenious force-cancelling technology, these formidably powerful drive units are connected back-to-back cancelling out the forces they generate, this configuration allows both drive units to operate more effectively, giving noticeably greater definition to low frequency effects.

Cabinet Design

Finished by hand in an ultra-high-gloss piano black finish and complimented by a composite front baffle the Reference 8b looks as good as it sounds. The shape and bracing of the cabinet are computer optimized to minimize secondary radiation from the cabinet walls and distortion from standing waves. With constrained layer damping to absorb residual vibrations, and it’s dual opposed drivers the Reference 8b does not allow anything to compromise the purity of the sound.

Composite Front Baffle

The Reference drivers are set in a smooth, strikingly distinctive front baffle engineered to eliminate response anomalies caused by diffraction. Made from an exceptionally strong laminated aluminium/resin composite and secured via high-loss pads and high tensile bolts, it adds tremendous rigidity to the inert cabinet.

New Product Tab

DesignForce cancelled closed box
LF Drive unit2 x 225 mm (9in.)
Frequency range at 90dB output in free-space mode (-6dB)18Hz
Frequency response at 90dB output in free-space mode (±3dB)24Hz
Amplifier2 x 500 W Class D with switched mode power supply and DSP based control section
Maximum output
(peak sound pressure level at 1m 50Hz)
Low pass filter variableVariable frequency: 40Hz to 160Hz
Variable slope: 12dB/oct, 18dB/oct, 24dB/oct
LFE mode: 350Hz, 18dB/oct
InputsRCA phono sockets
Analog XLR socket
Speaker level inputs
Link outRCA phono socket
Net internal volume23L
Weight35kg (77.2lbs.)
Dimensions (H x W x D)398 x 365 x 429 mm
(15.7 x 14.4 x 16.8 in.)
Power requirements100V – 120V / 220V – 240V ~50/60Hz
Power consumption1000W
FinishesDeep Piano Black

Office Address

PRO FX Tech Pvt Ltd
Barton Centre,
Ground Floor, M.G.Road,
Bengaluru - 560001

Contact Us

Tel No: 08043718978
For Enquiries :
For Service :
Open on all days: 11 am to 9 pm

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