Instruction/ maintenance manual of the product 120a Samson
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1 2 0 W A TT S T E R E O P O W E R A M P L I F I E R.
Safety Instructions/Consignes de sécurité/Sicherheitsvork ehrungen/Instrucciones de seguridad ACHTUNG: Um die Gefahr eines Brandes oder Stromschlags zu verringern, sollten Sie dieses Gerät weder Regen noch F euchtigkeit aussetzen.Um die Gefahr eines Stromschlags zu verringern, sollten Sie weder Deckel noch Rückwand des Geräts ent- fernen.
Copyright 2004, Samson T echnologies Corp. Printed December , 2004 Samson T echnologies C orp. 575 Underhill Blvd. P .O . Box 9031 Syosset, NY 11791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) F ax: 5.
4 Congra tulations on purchasing the Samson Ser vo 120a P ower Amplifier! Although designed for easy operation, we suggest you first take some time t o go through these pages so you can fully understand how we ’ve imple- mented a number of unique fea tures.
5 Ser vo 120a F ea tures The Samson Servo 120a Pow er Amplifier utilizes the latest technology in prof essional power amplifier design. Here are some of its main f eatures: • Po wer to spare - Each channel delivers 60 wa tts of power into 4 ohms (or , in Bridge mode, 120 wa tts into 8 ohms).
Guided T our - F ront P anel 1: Channel input level c ontrols - These 41-position detented knobs allow you to adjust the input lev el of the signal arriving at the rear-panel input jacks (see #4 and #5 on the f ollowing page). At their fully counterclock - wise position, the signal is attenuat ed by 70 dB (essentially completely off ).
7 Guided T our - Rear P anel 1: A C Input - Connect the supplied standard 3-pin “IEC ” plug here. 2: F use Holder - Inser t a 2.5 amp, SL O -BL O 125 volt fuse here f or 115 volt operation, or a 1.5 amp, SL O -BL O 250 volt fuse for 230 v olt operation.
8 8 Setting Up and Using the Ser v o 120a P ow er Amplifier Bridge switch Output connectors Input connectors Protection LED Headphone jack and Speaker on/off switch Channel Input control T en-segment LED meters Setting up your Ser vo 120a is a simple proc edure which takes only a few minutes: 1.
9 The Ser v o 120a Prot ec tion Circuitry As noted in the “Guided T our ” sec tion of this manual, the Servo 120a's front panel Pr otec tion LED indicates the activity of the relay speaker connection circuitry .
10 Bridge Mode The Servo 120a provides a rear-panel switch tha t allows it to be used in a Bridge mode. When this switch is placed in the “RIGHT ” (Stereo) position, the Ser vo 120a functions as a.
Appendix A: Linearit y v s. F requenc y S weep 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.
12 Appendix B: P ower Output v s. THD Po wer output (60 W ) vs. T otal Harmonic Distor tion 80.000 73.000 61.000 56.000 48.000 40.000 32.000 21.000 15.
13 Specifications Rated Output P ower , 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 T ypical Distor tion, per channel THD+N (80 kHz LPF @ 1 kHz, rated output power) .
14 Notes.
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Samson T echnologies Corp . 575 Underhill Blvd. P .O . Box 9031 Syosset, N Y 11791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) F ax: 516-364-3888 ww w .
An important point after buying a device Samson 120a (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Samson 120a yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Samson 120a - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Samson 120a you will learn all the available features of the product, as well as information on its operation. The information that you get Samson 120a will certainly help you make a decision on the purchase.
If you already are a holder of Samson 120a, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Samson 120a.
However, one of the most important roles played by the user manual is to help in solving problems with Samson 120a. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Samson 120a along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
