Samson SERVO 120A specifications Servo 120A, Features, ARCHITECT’S & ENGINEER’S Specifications

PRODUCT SPECIFICATION SHEET

SERIES	DESCRIPTION
SERVO 120A	POWER AMPLIFIER

FEATURES

>Power to spare - Each channel delivers 60 watts of power into 4 Ohms (or, in Bridge mode, 120 watts into 8 Ohms).

>Clean, crisp sound - Impressive audio specifications such as

.01% THD, S/N of 105 dB, crosstalk of 75 dB, and frequency response of 3 Hz to 65 kHz guarantee ultra-clean sound quality in any live or recording environment.

>Independent input level controls for each channel with 41-position detents.

>Ten-segment LED meters for each channel continuously display power output levels and allow you to correct for overloading (clipping) conditions.

>Front-panel Protection LED shows you at a glance overheating or faulty wiring conditions.

>Innovative front-panel Speaker on/off switch and dedicated headphone jack enables private cue monitoring of the input signal.

>Both electronically balanced 1/4˝ TRS and unbalanced RCA-type input connector jacks are provided along with 5-way binding post output connectors.

>Convection cooling (no fan) makes for whisper-quiet operation even in critical listening environments such as recording studios.

>Unique bipolar circuit design that continuously keeps DC output during idling at or near 0 volts (thus keeping idle speakers at their zero point). This serves to minimize heat overload problems by effectively preventing the Servo 120a from applying power when unnecessary.

>Protection relay circuitry (linked to the DC offset circuitry) that prevents “thumps” when powering on or off. This means that you can use the Servo 120a with a single power strip into which a mixer or other audio devices are connected, without danger of damage to connected speakers.

>Toroidal transformer power supply.

>Rugged construction (an all-steel chassis with a titanium finish and a lightweight anodized aluminum heat sink) makes the Servo 120a eminently roadworthy.

>Flexible design allows the Servo 120a to be used free-standing or, with the use of included rack ears, mounted in any standard 19˝ rack (taking just a single rack space).

>Three-year warranty.

ARCHITECT’S & ENGINEER’S SPECIFICATIONS

The Samson Servo 120a shall be a single space rackmount stereo power amplifier. It shall deliver 60 watts per channel at 4 Ohms or 120 watts into 8 Ohms in bridge mono mode. It shall have 1/4˝ balanced inputs and RCA unbalanced inputs. It shall be a bi-polar design and use a toroidal transformer. The front panel shall have volume controls and LED metering for each channel. The front panel shall also have a headphone output jack and an associated speaker mute switch. The rear panel shall also have binding posts for the amplifier outputs.

CATEGORY	SERVO 120A
AMPLIFIERS

SERVO 120A SPECIFICATIONS

Rated Output Power, per channel (@ 1 kHz)

Stereo mode
4 Ohm, <0.05% THD+N		60 W
4 Ohm, 1% THD+N		80 W
8 Ohm, <0.05% THD+N		50 W
8 Ohm, 1% THD+N		55 W
Bridge mode
8 Ohm, <0.05% THD+N		120 W
8 Ohm, 1% THD+N		150 W
Typical Distortion, per channel
THD+N (80 kHz LPF @
1 kHz rated output power)....		0.01%
IMD (SMPTE 4:1, 60 Hz &
7 kHz @ rated output power)...		0.03%
Signal To Noise Ratio
(22Hz - 22kHz
bandwidth @1dB below
rated output power)		105 dB
Frequency Response		10 Hz - 20 kHz +0, -0.5 dB
		3 Hz - 65 kHz, +0, -3.0 dB
Input Sensitivity		-10dBv on the RCA inputs,
		+4 dBu on the 1/4" inputs to
		achieve rated power. (Level
		control set to maximum)
Crosstalk (adjacent channels)		-75 dB, 1 kHz
Output DC Offset Voltage		± 50 mV, DC Servo Controlled
Headphone Output Level		400 mW (into 100Ω @
		1% THD+N)
Dimensions (W x D x H)		19˝ x 11.5˝ x 1.75˝
		483mm x 292mm x 44mm
Weight		15.4 lbs (7 kg)
	432 mm

291 mm

44 mm

483 mm