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Output Power (typical all channels driven):
4 Ω, 1 kHz, 1% THD, 324 W
4 Ω, 1 kHz, 0.5% THD, 275 W
8 Ω, 1 kHz, 1% THD, 235 W
8 Ω, 1 kHz, <.019% THD, 175 W
8 Ω bridged, 1 kHz, 1% THD, 650 W
8 Ω bridged, 1 kHz, < .08% THD, 550W
Frequency Response (-3 dB): <10 Hz to 85 kHz ±3 dB
Frequency Response (1 watt): 20 Hz to 20 kHz, -.4/-.25
Crosstalk (adj. channels): -74 dB, 1 kHz @ rated output
Distortion (THD+N, 20 Hz to 20 kHz) (80 kHz LPF):
at rated power: < .06%
at 1 watt: < .05%
Sensitivity (level control at maximum): +4 dBu
Damping Factor (8 Ω): > 100
Dynamic Range: 100 dB below rated output
(20 Hz to 22 kHz B.P.F.)
Input Impedance: >10 k Ω balanced/> 10 k Ω unbalanced
Power Consumption: 360 W @ 120 V/60 Hz
395 W @ 220 V/50 Hz
Dimensions: 19
″ (w) x 5.2″ (h) x 9.2″ (d)
482mm (w) x 132mm (h) x 234mm (d)
Weight: 32.4 lb / 14.7 kg
ARCHITECT’S & ENGINEER’S
SPECIFICATION
The power amplifier shall be capable of stereo or
mono bridged operation. In stereo mode, it shall deliver a
minimum of 175 watts into loads of 8 ohms each with both
channels operating, or 275 watts into loads of 4 ohms each
with both channels operating. In mono bridge mode, it
shall deliver a minimum of 550 watts into an 8 ohm load. It
shall be passively cooled, and shall have internal short-circuit
and thermal protection circuitry. A protection LED indicator
shall activate and the power amplifier shall shut down to
protect against short circuits, overheating, severe overcur-
rent conditions or DC offset present at the outputs. The
power amplifier shall have slow start-up and muted inputs
on turn-on. Inputs shall be on balanced 1/4
″ tip-ring-sleeve
connectors and outputs shall be on 1/4
″ phone connectors
and on binding post terminals. The front panel shall have
independent level controls for left and right channels, a mas-
ter power switch and LED indicators for clip, idle and ampli-
fier protection.
The power amplifier shall have a frequency response
of 20 Hz to 50 kHz, signal-to-noise equal to or greater than
103 dB and THD less than 0.03%. Total power consumed at
full audio power shall be 838 watts (115 Vac) and 975
watts (230/240 Vac). The dimensions shall allow for stan-
dard 19
″ EIA rack mounting. It shall be 5.2″ (132 mm; 3
rack spaces) high and 9.2
″ (234 mm) deep. Weight shall be
32.4 lb. (14.7 kg). The power amplifier shall carry a three-
year warranty.
The power amplifier shall be a SAMSON SERVO 500.
SERVO 550 SPECIFICATIONS
U
L
®
5.0000
4.0000
3.0000
2.0000
1.0000
0.0
-1.000
-2.000
-3.000
-4.000
-5.000 0.0
.1000
.2000
.3000
.4000
.5000
.6000
.7000
.8000
.9000
1.000
20 100 1k
10k
50k
AUDIO PRECISION Servo 550 LEVEL (dBr) & THD+N (%) vs FREQ (Hz)
Ap
0 dB ref THD
Specifications subject to change without notice. ©1998 Samson
FREQUENCY RESPONSE