Samson Servo 550 manual Frequency Response

ARCHITECT’S & ENGINEER’S	SERVO 550 SPECIFICATIONS
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

32.4lb. (14.7 kg). The power amplifier shall carry a three- year warranty.

The power amplifier shall be a SAMSON SERVO 500.

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

	FREQUENCY RESPONSE
0 dB ref	AUDIO PRECISION Servo 550 LEVEL (dBr) & THD+N (%) vs FREQ (Hz)
				THD
5.0000				1.000
				Ap
4.0000				.9000
3.0000				.8000
2.0000				.7000
1.0000				.6000
0.0				.5000
-1.000				.4000
-2.000				.3000
-3.000				.2000
-4.000				.1000
-5.000				0.0
20	100	1k	10k	50k

U® L

Specifications subject to change without notice. ©1998 Samson