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Samson 170 manual

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Table of contents for the manual

  • Page 1

    ® OWNERS MANUAL STEREO AMPLIFIER SER VO 170/260/550[...]

  • Page 2

    Intr oduction 3 System Featur es 4 Guided T our 5 Servo-550 Front Panel 5 Servo-550 Rear Panel 6 Servo-260 / Servo-170 Front Panel 7 Servo-260 / Servo-170 Rear Panel 8 Setting Up and Using the Ser vo Amplifier 9 Suggested Applications 10 Appendix A: Compatible Studio Near field Monitors 11 Appendix B: Linearity and THD vs. Fr equency Sweep 12 Appen[...]

  • Page 3

    3 Congratulations on purchasing the Samson Servo 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 Amplifier is a stereo power amplifier which is optimized for use in both professional and project r[...]

  • Page 4

    4 System Featur es The Samson Servo Amplifier utilizes the latest technology in professional power amplifier design. Here are some of its main features: • The Servo-550 model delivers 275 watts (into 4 ohms) of power per side. The Servo-260 model delivers 130 watts (into 4 ohms) of power per side. The Servo-170 model delivers 85 watts (into 4 ohm[...]

  • Page 5

    Guided T our - Ser vo-550 Fr ont Panel 1: Power switch - Use this to power the Servo Amplifier on or off. 2: Channel input controls (left/right) - These 41-position knobs allow you to adjust the input level of the signal arriving at the rear-panel input jacks. At the fully counterclockwise position (labeled “ ∞ ” ), the signal is infinitely a[...]

  • Page 6

    6 Guided T our - Ser vo-550 Rear Panel 1: Fuse holder - Insert a 10 amp, 250 volt fuse here for 115 volt operation, or a 5 amp, 250 volt fuse for 230 volt operation. We recommend the use of normal (as opposed to slow-blow) fuses. 2: Binding post (banana jack) output connectors (left/right) - Use these to connect the Servo-550 to loudspeakers. 3: 1/[...]

  • Page 7

    7 Guided T our - Ser vo-260 / Ser vo-170 Fr ont Panel 1: Power switch - Use this to power the Servo Amplifier on or off. 2: Channel input controls (left/right) - These 41-position knobs allow you to adjust the input level of the signal arriving at the rear-panel input jacks. At the fully counterclockwise position (labeled “ ∞ ” ), the signal [...]

  • Page 8

    8 Guided T our - Ser vo-260 / Ser vo-170 Rear Panel 1: AC input - Connect the supplied standard 3-pin “ IEC ” plug here. 2: Fuse holder - In the Servo-260, insert a 6 amp, 250 volt fuse here for 115 volt operation, or a 3 amp, 250 volt fuse for 230 volt operation. In the Servo-170, insert a 5 amp, 250 volt fuse here for 115 volt operation, or a[...]

  • Page 9

    9 Setting Up and Using the Ser vo Amplifier Setting up your Servo 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, requiring[...]

  • Page 10

    10 Suggested Applications The Samson Servo Amplifier has been designed to deliver ultra-clean sound in a variety of applications, as described below. Bear in mind that, since the Servo Amplifier is a power amplifier, it requires preamplification of input signal (this is most commonly accomplished by a mixer such as any of the Samson MPL or PL model[...]

  • Page 11

    11 Appendix A: Compatible Near field Monitors The Samson Servo Amplifier is the perfect system for powering nearfield monitor systems in both professional and project recording studio environments. Although compatible with virtually all nearfield monitors currently on the market, this chart provides a partial listing of some of the more popular mod[...]

  • Page 12

    Appendix B: Linearity and THD vs. Fr equency Sweep 12 Servo-550 Linearity (0 dB Ref) and THD+N 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 550 LEVEL(dBr) & THD+N(x) vs FREQ(Hz) 0dB ref 1.000 .9000 .8000 .7000 .6000 .5000 .4000 .3000 .20[...]

  • Page 13

    13 Appendix C: Power Output vs. THD 1.000 .9000 .2000 0.0 100 AUDIO PRECISION Servo 550 THD +N (%) & LEVEL (W) vs FREQ (Hz) THD Watts .8000 .7000 .6000 .5000 .4000 .1000 .3000 300.00 270.00 240.00 210.00 180.00 150.00 120.00 90.000 60.000 30.000 0.0 Ap 20 1k 10k 50k 1.000 .9000 .2000 0.0 100 AUDIO PRECISION Servo 260 THD +N (%) & LEVEL (W) [...]

  • Page 14

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

  • Page 15

    Appendix E: Bridged Mono Mode (Ser vo-550 Only) The Servo-550 amplifier provides a rear-panel switch that allows it to be used in a bridged mono mode. When this switch is placed in the “ Stereo ” (up) position, the Servo-550 functions as a true stereo amplifier, where both of the two independent amplifier channels (left and right) can receive d[...]

  • Page 16

    16 Specifications 1. Rated Output Power @ 5% @ 1% At 1 kHz, 4 ohm Model 550 340 W 300 W Model 260 150 W 139 W Model 170 105 W 94 W At 1 kHz, 8 ohm Model 550 230 W 215 W Model 260 95 W 105 W Model 170 70 W 60 W 2. Total Harmonic Distortion (with 30 kHz LPF, 4 ohm) Model 550 @ 275 watts 0.07% Model 260 @ 130 watts 0.20% Model 170 @ 85 watts 0.10% 3. [...]