Collection: Kef Ref 3 Specs

Design

Three-way bass reflex

Drive units

Uni-Q driver array:

HF: 25 mm (1 in.) aluminium dome with MAT

MF: 125 mm (5 in.) aluminium cone

Bass units:

LF: 2 x 165 mm (6.5 in.) aluminium cone

Frequency range free field (-6dB)

Short port: 38Hz - 45kHz

Long port: 35Hz - 45kHz

Frequency range typical in room bass response (-6dB)

28Hz

Frequency response (±3dB)

43Hz – 35kHz

Crossover frequency

450 Hz, 2.1 kHz

Amplifier requirements

50 - 300W

Sensitivity (2.83V/1m)

86dB

Harmonic distortion 2nd & 3rd harmonics (90dB, 1m)

<0.5% 40Hz – 100kHz

<0.2% 200Hz – 2kHz

<0.1% 2kHz - 20kHz

Maximum output (peak sound pressure level at 1m with pink noise)

113.5dB

Impedance 4 Ω (min. 3.2 Ω)

Weight 51.3 kg (113.1 lbs.)

Dimensions (H x W x D)(with grille and terminal)

1155 x 205 x 462 mm(45.5 x 8.1 x 18.2 in.)

Dimensions (H x W x D)(with grille, terminal & plinth)

1207 x 323 x 467 mm(47.5 x 12.7 x 18.4 in.)