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- POWER AMPLIFIER SERVO 120A
- Owner's Manual
Samson POWER AMPLIFIER SERVO 120A Owner's Manual
Summary of POWER AMPLIFIER SERVO 120A
Page 3: Table of Contents
Copyright 2004, samson technologies corp. Printed december, 2004 samson technologies corp. 575 underhill blvd. P.O. Box 9031 syosset, ny 11791-9031 phone: 1-800-3-samson (1-800-372-6766) fax: 516-364-3888 table of contents introduction 4 servo 120a features 5 guided tour 6 front panel 6 rear panel 7...
Page 4: Introduction
4 congratulations on purchasing the samson servo 120a power amplifier! Although designed for easy operation, we suggest you first take some time to go through these pages so you can fully understand how we’ve imple- mented a number of unique features. The servo 120a is a single rack-space stereo pow...
Page 5: Servo 120A Features
5 servo 120a features the samson servo 120a power amplifier utilizes the latest technology in professional power amplifier design. Here are some of its main 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 so...
Page 6: Guided Tour - Front Panel
Guided tour - front panel 1: channel input level controls - these 41-position detented knobs allow you to adjust the input level of the signal arriving at the rear-panel input jacks (see #4 and #5 on the following page). At their fully counterclock- wise position, the signal is attenuated by 70 db (...
Page 7: Guided Tour - Rear Panel
7 guided tour - rear panel 1: ac input - connect the supplied standard 3-pin “iec” plug here. 2: fuse holder - insert a 2.5 amp, slo-blo 125 volt fuse here for 115 volt operation, or a 1.5 amp, slo-blo 250 volt fuse for 230 volt operation. Warning: fuses should only be replaced with the power cord d...
Page 8
88 setting up and using the servo 120a power amplifier bridge switch output connectors input connectors protection led headphone jack and speaker on/off switch channel input control ten-segment led meters setting up your servo 120a is a simple procedure which takes only a few minutes: 1. Remove all ...
Page 9
9 the servo 120a protection circuitry as noted in the “guided tour” section of this manual, the servo 120a's front panel protection led indicates the activity of the relay speaker connection circuitry. When the protection led is lit, this circuitry is inactive, and all connected speakers are muted (...
Page 10: Bridge Mode
10 bridge mode the servo 120a provides a rear-panel switch that allows it to be used in a bridge mode. When this switch is placed in the “right” (stereo) position, the servo 120a functions as a true stereo amplifier, where both of the two independent amplifier channels (left and right) can receive d...
Page 11
Appendix a: linearity vs. Frequency sweep 11 linearity (0 db ref) vs. Frequency sweep 10 hz - 50 khz 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 ap audio precision servo 120a level (dbr) vs freq (hz) 0db ref.
Page 12
12 appendix b: power output vs. Thd power output (60 w) vs. Total harmonic distortion 80.000 73.000 61.000 56.000 48.000 40.000 32.000 21.000 15.000 8.000 200.0u 0.000 .1000 .2000 .3000 .4000 .5000 .6000 .7000 .8000 .9000 1.000 20 100 1k 10k 50k ap audio precision servo 120a thd +n (%) & level (w) v...
Page 13: Specifications
13 specifications rated output power, per channel (@ 1 khz) stereo mode 4 ohm, . 60 w 4 ohm, 1% thd+n 80 w 8 ohm, 50 w 8 ohm, 1% thd+n 55 w bridge mode 8 ohm, . 120 w 8 ohm, 1% thd+n 150 w typical distortion, per channel thd+n (80 khz lpf @ 1 khz, rated output power) .01% imd (smpte 4:1, 60 hz & 7 k...
Page 14: Notes
14 notes.
Page 16
Samson technologies corp. 575 underhill blvd. P.O. Box 9031 syosset, ny 11791-9031 phone: 1-800-3-samson (1-800-372-6766) fax: 516-364-3888 www.Samsontech.Com.