4
SPECIFICATIONS
Power Output, continuous average output power, both channels driven:
150W per channel into 4 or 8 Ohms at 1kHz with 0.5% or less THD
150W per channel at 100V into a 67 Ohm load at 1 kHz with 0.5% or less THD
150W per channel at 70V into a 33 Ohm load at 1 kHz with 0.5% or less THD
Power Output, bridged-mono operation:
300W at 8 or 16 Ohms with 0.5% or less THD
300W at 100V into a 33 Ohm load with 0.5% or less THD
300W at 70V into a 16 Ohm load with 0.5% or less THD
Power Consumption:
60W or less at idle, no input, maximum gain
125W with musical program at 1/8 rated power
250W with musical program at 1/3 rated power
300W at 70V into a 41 Ohm load with 0.5% or less THD
600W at 4 Ohms with a sinewave test tone, rated continuous power at maximum gain
575W at 8 Ohms with a sinewave test tone, rated continuous power at maximum gain
560W at 70V or 100V with a sinewave test tone, rated continuous power at maximum gain
Power Requirements: 120 VAC, 60 Hz +/-20% (US and Canada)
230 VAC, 50 Hz +/-20% (Europe/UK)
240 VAC, 50 Hz +/-20% (Australia)
Output Configurations: Audio output transfomer taps per channel:
100V, 70V, 50V, 35V, 25V, 8 Ohms, 4 Ohms
Frequency Response: 30 Hz to 20 kHz (-3 dB)
Signal to Noise Ratio: > 95 dB, A-Weighted below full bandwidth power
Channel Separation: > 80 dB at 1 kHz
CMRR: > 80 dB at 1 kHz (without Bose
®
input module)
Slew Rate: > 10V/uSec
Sensitivity: 0.775 Vrms for rated power at 1 kHz
Input Impedance: 50k Ohms balanced, 25k Ohms unbalanced
Maximum Input: +20 dBu (7.75V)
Fusing/Protection: Mains internally fused. Amplifier thermal and
short circuit protection
Dynamic Headroom: 1.2 dB
Full Power Bandwidth: 30 Hz to 20 kHz at 0.5% THD
IM Distortion: 0.2%
THD: < 0.5% rated power, < 0.2% 1/8 rated power
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