SWR Sound SM-900 User Manual

Page 4

2 • SM-900 USER GUIDE

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. Distor tion: 0.06 %

System Distor tion (gain & master volume full, Aural Enhancer at min., tone controls flat): 0.4 %
THD