KEF Reference 1 Bookshelf Speakers

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KEF


KEF Reference 1 Bookshelf Speakers

Smart use of innovative KEF technology means that with Reference 1 you don't need a big cabinet to enjoy expansive, high-performance sound.

Sound

Reference 1 pairs KEF’s latest 125mm (5 inch) MF/HF Uni-Q driver array with the sensational new 165mm (6.5 inch) alloy cone bass driver to create a compellingly realistic, large scale sound stage. Uni-Q’s inherently wide, even dispersion also makes it the perfect rear channel speaker in a serious home theatre system.

PRODUCT SHEET

 

WEIGHT

18.2kg (40.1lbs)    

H X W X D WITH GRILLE AND TERMINAL

440 x 205 x 430 mm (17.3 x 8.1 x 16.9 in. )    

DESIGN

Three-way bass reflex

 

UNIT MEASUREMENT

Pair

FREQUENCY RANGE

Typical in room bass response: 30Hz (-6dB)
Free Field - Short port: 40Hz - 45kHz (-6dB)
Free Field - Long port: 37Hz - 45kHz (-6dB)

 

TYPICAL IN-ROOM BASS RESPONSE

26Hz (-6dB)    

FREQUENCY RESPONSE

45Hz- 35kHz (±3dB)    

HARMONIC DISTORTION

2nd & 3rd harmonics (90dB, 1m)
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz
   

MAXIMUM OUTPUT

111 dB (peak sound pressure level at 1m with pink noise)    

AMPLIFIER CLASS

50-200W  

 

SENSITIVITY

85dB (2.83V/1m)  
 

NOMINAL IMPEDANCE

8Ohms (min.3.2Ohms)  

DRIVE UNITS

Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units
LF: 1 x165mm (6.5in.) aluminium
   

CROSSOVER FREQUENCIES

350Hz, 2.8kHz    

 

 

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