Input Impedance; Output Impedance - SWR SM-900 User Manual

SM-900 SPECIFICATIONS SM-900 SPECIFICATIONS
Note: All measurements were taken with a line voltage of 120VAC. All noise specifications are
"unweighted." All voltages and watts are "RMS."
POWER (minimum):
Bridge/Mono Mode
900 Watts @ 4 Ohms
650 Watts @ 8 Ohms
440 Watts @ 16 Ohms
(minimum load = 4 Ohms)
Stereo Mode (per side)
400 watts @ 4 Ohms
240 watts @ 8 Ohms
144 watts @ 16 ohms
(minimum load = 2 Ohms)
FREQUENCY RESPONSE (power amplifiers): –3dB @ 20 Hz and 40kHz
SENSITIVITY (full output, 8 ohm load, 100 Hz):
Passive Input Jack: 50 millivolts
Active Input Jack: 200 millivolts
Power Amplifier (Effects Return Jack "in"): 1.6 volts

INPUT IMPEDANCE

Passive/Active Input: 800kohms
Active Input: 60kohms
Effects Return: 27kohms

OUTPUT IMPEDANCE

Effects Send: 100 ohms
Tuner Send: 100 ohms
XLR Balanced Out: 750 ohms
Crossover High and Low Outs: 100 ohms
SIGNAL TO NOISE RATIO: –75 dB (< 8 millivolts typical)
EQUIVALENT INPUT NOISE: 8.9 microvolts
DISTORTION:
Power Amplifiers (Effects Return jack "in"): 0.03% THD
I.M. Distortion: 0.06 %
System Distortion (gain & master volume full, Aural Enhancer at min., tone controls flat): 0.4 % THD
2 • SM-900 USER GUIDE