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KEF Q Series Q350 Speaker System Review Test Bench
Q350 (purple) +0.65/–3.49 dB, 200 Hz to 10 kHz; –3 dB @ 56 Hz, –6 dB @ 41 Hz; impedance minimum 4.54 ohms @ 177 Hz, phase angle –65.15º @ 96 Hz; sensitivity 87 dB, 500 Hz to 2 kHz.
Q650c (green) +0.95/–4.80 dB, 200 Hz to 10 kHz; –3 dB @ 65 Hz, –6 dB @ 53 Hz; impedance minimum 5.19 ohms @ 15.2 kHz, phase angle –50.74º @ 4.2 kHz; sensitivity 87.5 dB, 500 Hz to 2 kHz.
Q50a (yellow) +3.15/–2.92 dB, 200 Hz to 10 kHz; –3 dB @ 107 Hz, –6 dB @ 91 Hz; impedance minimum 4.83 ohms @ 223 Hz, phase angle –55.62º @ 136 Hz; sensitivity 86.5 dB, 500 Hz to 2 kHz.
Kube 12b (blue) Close-miked response, normalized to level @ 80 Hz: lower –3 dB @ 17 Hz, –6 dB @14 Hz, upper –3 dB @137 Hz with EQ switch set to In-Room, Crossover control set to maximum.—MJP
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