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SM-500 USER GUIDE • 3
SM-500 SPECIFICATIONS
Note: All measurements were taken with a line voltage of 120VAC. All noise specifications are
“unweighted.” All voltages and watts are "RMS." All measurements taken with tone controls
set flat, Aural Enhancer at minimum.
POWER (minimum):
Bridge/Mono Mode
500 Watts @ 4 Ohms
400 Watts @ 8 Ohms
250 Watts @ 16 Ohms
(minimum load = 4 Ohms)
Stereo Mode (per side)
300 watts @ 2 Ohms
250 watts @ 4 Ohms
150 watts @ 8 Ohms
(minimum load = 2 Ohms)
FREQUENCY RESPONSE (power amplifier): 10Hz to 40kHz
SENSITIVITY (full output under clipping, 8 ohms load, 100Hz):
Passive Input Jack: 38 millivolts
Active Input Jack: 155 millivolts
Power Amplifier (Effects Return Jack “in”): .5 volts
INPUT IMPEDANCE:
Passive/Active Input: 800kohms
Active Input: 60kohms
Effects Return: 27kohms
OUTPUT IMPEDANCE:
Effects Send: 100 ohms
Tuner Output: 100 ohms
XLR Balanced Out: 750 ohms
SIGNAL TO NOISE RATIO: –72 dB (<10 millivolts typical)
EQUIVALENT INPUT NOISE: 9 microvolts
SIZE (measured from the rack ears back): 19" W x 3.5" H x 13.375" D (82.6 x 8.9 x 39.73 mm)
WEIGHT: 20 lbs. (9.07 kg)