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Samson 4060/4120 manual

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Table of contents for the manual

  • Page 1

    ® OWNERS MANUAL Q U A D AMPLIFIER SER VO 4060/4120[...]

  • Page 2

    Intr oduction 3 Ser vo Quad Amplifier Featur es 4 Guided T our 5 Front Panel 5 Rear Panel 6 Setting Up and Using the Ser vo Quad Amplifier 7 The Ser vo Quad Amplifier Pr otection Cir cuitr y 8 Bridge Ster eo Mode 9 Bi-amplification Applications 10 Appendix A: Linearity vs. Fr equency Sweep 11 Appendix B: Power Output vs. THD 12 Specifications 13[...]

  • Page 3

    3 Congratulations on purchasing the Samson Servo Quad 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 implemented a number of unique features. The Servo Quad Amplifier is actually four discrete power amplifiers in a single chassis, optimized for u[...]

  • Page 4

    4 Ser vo Quad Amplifier Featur es The Samson Servo Quad Amplifier utilizes the latest technology in professional power amplifier design. Here are some of its main features: • Power to spare - Each channel of the Servo 4060 delivers 60 watts into 4 ohms (or, in bridge stereo mode, 120 watts into 8 ohms). Each channel of the Servo 4120 delivers 120[...]

  • Page 5

    Guided T our - Fr ont Panel 1: Power switch - Use this to power the Servo Quad Amplifier on or off. 2: Power LED - Lit whenever the Servo Quad Amplifier is powered on. 3: Channel input controls (Ch 1 - 4) - These four 41-position knobs allow you to adjust the input level of the signal arriving at the rear-panel input jacks (see #4 and #5 on the fol[...]

  • Page 6

    6 Guided T our - Rear Panel 1: AC input - Connect the supplied standard 3-pin “ IEC ” plug here. 2: Fuse holder - In the Servo Quad 4060, insert an 6 amp, 125 volt fuse here for 115 volt operation, or a 3.15 amp, 250 volt fuse for 230 volt operation. In the Servo Quad 4120, insert an 8 amp, 125 volt fuse here for 115 volt operation, or a 6.3 am[...]

  • Page 7

    7 Setting Up and Using the Ser vo Quad Amplifier Setting up your Servo Quad Amplifier is a simple procedure which takes only a few minutes: 1. Remove all packing materials (save them in case of need for future service) and decide where the amplifier is to be physically placed — it can be used free-standing or mounted in a standard 19" rack, [...]

  • Page 8

    8 The Ser vo Quad Amplifier Pr otection Cir cuitr y As noted in the “ Guided Tour ” section of this manual, the Servo Amplifier's front panel Protection lights indicate the activity of the relay speaker connection circuitry. When the Protection lights are lit, this circuitry is inactive, and all connected speakers are muted (provided with [...]

  • Page 9

    Bridge Ster eo Mode The Servo Quad Amplifier provides two rear-panel switches that allow it to be used in a unique bridge stereo mode. When these switches are in their “ Off ” (left) position, the Servo Quad Amplifier functions as a true quad amplifier, where each of the four independent amplifier channels can receive different input signal and[...]

  • Page 10

    Bi-amplification Applications Because the Samson Servo Quad Amplifier actually contains four discrete power amplifiers in a single chassis, it is particularly well-suited for use with bi-amped speaker systems. These systems utilize active crossover networks (sometimes called electronic crossovers ) that are specially designed to handle low-wattage [...]

  • Page 11

    Appendix A: Linearity vs. Fr equency Sweep 11 Linearity (0 dB Ref) vs. frequency sweep 20 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 0.0 .1000 .2000 .3000 .4000 .5000 .6000 .7000 .8000 .9000 1.000 10 100 1k 10k 50k Ap AUDIO PRECISION servo 4060/4120 THD +N (%) & LEVEL (W) vs FREQ (Hz) 0dB ref THD[...]

  • Page 12

    12 Appendix B: Power Output vs. THD Power output (Servo 4060 @ 60 W, Servo 4120 @ 120 W) vs. Total Harmonic Distortion .50000 .45000 .05000 0.0 10 100 1k 10k 20k Ap AUDIO PRECISION servo 4060/4120 THD +N (%) & LEVEL (W) vs FREQ (Hz) THD Watts .40000 .35000 .30000 .25000 .20000 .15000 .10000 80.000 / 160.000 73.333 / 146.666 66.667 / 133.333 60.[...]

  • Page 13

    13 Specifications 1. Rated Output Power, per channel At 1 kHz, 4 ohm, .<0.05% THD+N Model 4120 120 W Model 4060 60 W At 1 kHz, 4 ohm, 1% THD+N Model 4120 150 W Model 4060 80 W At 1 kHz, 8 ohm, <0.05% THD+N Model 4120 120 W Model 4060 60 W At 1 kHz, 8 ohm, 1% THD+N Model 4120 130W Model 4060 64 W 2. Typical Distortion, per channel THD+N (80 kH[...]

  • Page 14

    Produced by On The Right Wavelength for Samson Technologies Corp. Copyright 1997, Samson Technologies Corp. Printed April, 1997 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[...]