"Sit anywhere" Uni-Q sound
At the heart of the evolved Q Series is the Uni-Q driver array. The signature innovation places the tweeter in the acoustic centre of the midrange and bass cone, bringing the acoustic ideal of a single point source closer than ever to realisation. The result is a more detailed, accurate three-dimensional sound image, which is dispersed more evenly throughout the room than is possible with any conventional speaker. Uni-Q's ultra-wide dispersion is further enhanced through KEF's 'tangerine' waveguide over the tweeter dome.
New system design
The closed box midrange cabinet design reduces the load on the Uni-Q midrange cone, increasing clarity and detail while delivering cleaner, punchier bass.
The Uni-Q driver is isolated in a closed box cabinet to reduce distortions. With the addition of the damped tweeter loading tube providing a gentle termination of sound produced from the back of the tweeter, lower treble performance is improved dramatically and a new low-distortion inductor on the crossover provides cleaner bass.
Beefier LF drivers and ABRs
Low-frequency (LF) drivers now have a larger roll surround, along with a new suspension to produce cleaner bass at high volumes. A new cone structure improves midrange clarity, and an enhanced Auxiliary Bass Radiator (ABR) with a new surround and rear suspension delivers better controlled and more impressive bass.
MODEL Q650c
DESIGN Two and a half-way bass reflex
DRIVE UNITS 165mm (6.5in.) aluminium Uni-Q
25mm (1in.)vented aluminium dome HF
165mm (6.5in.) aluminium LF
165mm (6.5in.)aluminium ABR
FREQUENCY RANGE FREE FIELD 55Hz (-6dB)
FREQUENCY RESPONSE 64Hz-28kHz (±3dB)
CROSSOVER FREQUENCIES 2.5kHz
MAXIMUM OUTPUT 110dB
AMPLIFIER REQUIREMENTS 15-150W
SENSITIVITY 87dB (2.83V/1m)
NOMINAL IMPEDANCE 8 Ohms (min.4.2 Ohms)
DIMENSIONS H x W x D:
210 x 629 x 304 mm
214 x 629 x 304 mm (with Rubber Feet)
WEIGHT 13.6kg(30 lbs)