Samson Power Amplifier Servo 120 Manuel utilisateur

• Rack-mount stereo power amplifier (1-space).

• 60 watts per channel into 4 ohms (stereo).

• 120 watts into 8 ohms (mono bridge).

• 10 Hz to 100 kHz frequency response.

• Electronically balanced 1/4″and unbalanced RCA

inputs on gold-plated connectors.

•Push-spring terminal outputs.

•Smart Servo circuitry protection against overheating

and overcurrent.

•High-current output power transistors.

•Unique bipolar circuit design continuously keeps DC

output during idling at or near 0 V (thus keeping idle

speakers at their 0 point).

•Front-panel protection LED, headphone jack, speaker

on/off switch, 3 color LED meters.

•Independent left- and right-channel input controls

with 41-position detent.

•Convection-cooled (No Fan).

•Solid steel chassis with lightweight anodized alu-

minum heat sink.

•Toroidal transformer power supply.

•Front-panel headphone jack with speaker disable

switch.

•3 Year warranty.

SERVO 120

AMPLIFIER

POWER

The Servo 120 power amplifier is intended for use

in all types of recording applications, live performance

and permanent installs. This easily-installed 1-space rack-

mount stereo power amplifier (which can also be used in

mono bridge mode) delivers 60 watts per channel into a 4

ohm load (in mono bridge mode, 120 W into 8 ohms),

over a bandwidth of 20 Hz to 50 kHz. It utilizes high-cur-

rent output power transistors and features an efficient

bipolar circuit design that continuously keeps DC output

during idling at or near 0 volts. The Servo 120 also has

balanced 1/4″and RCA inputs and push-spring terminal

outputs, a front-panel protection light, headphone jack,

speaker On/Off switch, 3 color LED meters and thermal

and overcurrent protection circuitry. The Servo 120 is con-

vection cooled for silent operation, eliminating fan noise

and the need for filter maintenance.

Contact:

Samson Technologies Corp., P.O. Box 9031, Syosset, NY 11791-9031 •Phone: (516) 364-2244 •Fax: (516) 364-3888 •www.samsontech.com

BRIDGE

OFF ON

SERVO 120 STEREO AMPLIFIER

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN !

SAMSON

BALANCE

RIGHT LEFT

M0N0

BALANCE AC INPUT

USA & CANADA 115V~60HZ 200W

EUROPE & UK 230V ~ 50HZ 300W

USA & CANADA

2.5A/125V(115V)

EUROPE & UK

1.5A/250V (230V)

+RIGHT GROUND LEFT+

MONO (8Ω)

Output Power (typical all channels driven): 4 Ω, 1 kHz, 1% THD, 83 W

4 Ω, 1 kHz, .034% THD, 60 W

8 Ω, 1 kHz, 1% THD, 57.5 W

8 Ω, 1 kHz, <.019% THD, 52 W

8 Ωbridged, 1 kHz, 1% THD, 160 W

8 Ωbridged, 1 kHz, < .08% THD, 120W

Frequency Response (-3 dB): <10 Hz to 100 kHz

Frequency Response (1 watt): 20 Hz to 20 kHz, -0.1/-0.2

Crosstalk (adj. channels): 80 dB, 1 kHz @ rated output

Distortion (THD+N, 20 Hz to 20 kHz) (80 kHz LPF):

at rated power: < .05%

at 1 watt: < .05%

Sensitivity (level control at maximum): +4 dBu

Damping Factor (8 Ω): > 150

Dynamic Range: 98 dB below rated output

(20 Hz to 22 kHz B.P.F.)

Headphone Output Level: 240 mW at 8 Ω(1 kHz)

Input Impedance: >10 k Ωbalanced/> 10 k Ωunbalanced

Power Consumption: 240 W @ 120 V/60 Hz

270 W @ 220 V/50 Hz

Dimensions: 17.5″(w) x 1.75″(h) x 11.5″(d)

444 mm (w) x 44 mm (h) x 292 mm (d)

Weight: 15.6 lb / 7 kg

SERVO 120 SPECIFICATIONS

5.0000

4.0000

3.0000

2.0000

1.0000

0.0

-1.000

-2.000

-3.000

-4.000

-5.000

10 100 1k 10k 50k

AUDIO PRECISION Servo 120 LEVEL (dBr) vs FREQ (Hz)

0dB ref

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 52 W into loads of 8 ohms each with both chan-

nels operating, or 60 W into loads of 4 ohms each with both

channels operating. In mono bridge mode, it shall deliver a

minimum of 120 W into an 8 ohm load. It shall be passively

cooled, and shall have internal short-circuit and thermal pro-

tection circuitry. A protection LED indicator shall activate

and the power amplifier shall shut down to protect against

short circuits, overheating, severe overcurrent 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 push-

spring terminals. The front panel shall have independent level

controls for left and right channels, a master power switch

and LED indicators for clip, idle and amplifier protection.

The power amplifier shall have a frequency response

of less than 10 Hz to 100 kHz, signal-to-noise equal to or

greater than 103 dB and THD less than 0.5%. Total power

consumed at full audio power shall be 240 W (120 Vac)

and 975 W (220 Vac). The dimensions shall allow for stan-

dard 19″EIA rack mounting. It shall be 1.75″(44 mm; 1

rack space) high and 11.5″(292 mm) deep. Weight shall be

15.6 lb. (7 kg). The power amplifier shall carry a three-year

warranty.

The power amplifier shall be a SAMSON SERVO 120.

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