KEF Audio JP IQ manual Design

Design	Three-way bass reflex
Drive units	2 x 165mm (61 2 ) LF
	165mm (61 2 ) Uni-Q
	19mm (3 4 ) aluminium dome HF
Frequency response	38Hz - 40kHz
Crossover frequency	250Hz - 2.8kHz
Amplifier requirements	15 - 200W

Sensitivity (2.83V/1m)	91dB
Maximum output	113dB
Nominal impedance	8‰
Magnetic shielding	Yes
Weight	16.6kg (36.6lbs)
Dimensions	942 x 220 x 327 mm
H x W x D	37 x 8.7 x 12.9 in.

Design	Two-way bass reflex
Drive units	130mm (51 4 ) Uni-Q
	19mm (3 4 ) aluminium dome HF
Frequency response	70Hz - 40kHz
Crossover frequency	2.8kHz
Amplifier requirements	10 - 100W

Sensitivity (2.83V/1m)	89dB
Maximum output	109dB
Nominal impedance	8‰
Magnetic shielding	Yes
Weight	4.7kg (10.3lbs)
Dimensions	165 x 418 x 220 mm
H x W x D	6.5 x 16.4 x 8.7 in.

Design	Three-way bass reflex
Drive units	2 x 130mm (51 4 ) LF
	130mm (51 4 ) Uni-Q
	19mm (3 4 ) aluminium dome HF
Frequency response	65Hz - 40kHz
Crossover frequency	280Hz - 2.8kHz
Amplifier requirements	15 - 150W

Sensitivity (2.83V/1m)	90dB
Maximum output	111dB
Nominal impedance	8‰
Magnetic shielding	Yes
Weight	8.9kg (19.6lbs)
Dimensions	165 x 512 x 255 mm
H x W x D	6.5 x 20.1 x 10 in.

Design	Two-way closed box
Drive units	2 x 130mm (51 4 ) Uni-Q
	2 x 19mm (3 4 ) aluminium dome HF
Frequency response	65Hz - 40kHz
Crossover frequency	2.8kHz
Amplifier requirements	10 - 100W

Sensitivity (2.83V/1m)	83dB
Maximum output	103dB
Nominal impedance	8‰
Magnetic shielding	No
Weight	5.2kg (11.5lbs)
Dimensions	180 x 360 x 175 mm
H x W x D	7.1 x 14.2 x 6.7 in.

Design	Closed Box, downward firing
Drive units	300mm (12￿) ultra long-throw
	bass driver
Frequency response	30Hz - 250Hz
Crossover frequency	Variable/LFE
Amplifier requirements	300W built in

Sensitivity (2.83V/1m)	100mV for full output
Maximum output	110dB
Nominal impedance	N/A
Magnetic shielding	Yes
Weight	22.5kg (49.6lbs)
Dimensions	450 x 600 x 395 mm
H x W x D	17.7 x 23.6 x 15.6 in.