Symetrix SX202 Owner's Manual

Symetrix SX202 Owner's Manual

Dual mic preamp

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Symetrix
SX202
Dual Mic Preamp
Owner's Manual
Symetrix Inc.
14926 35th Avenue West
Lynnwood, Washington 98037
Voice: (425) 787-3222, (800) 288-8855
Fax:
(425) 787-3211
Copyright 1988, 1994 Symetrix Inc.
All rights reserved.
Subject to change without notice.
Batteries not included.
This manual will not play in reverse.
Revision: 2.1, 8/8/97
Part Number: 530102

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Summary of Contents for Symetrix SX202

  • Page 1 14926 35th Avenue West Lynnwood, Washington 98037 Voice: (425) 787-3222, (800) 288-8855 Fax: (425) 787-3211 Copyright 1988, 1994 Symetrix Inc. All rights reserved. Subject to change without notice. Batteries not included. This manual will not play in reverse. Revision: 2.1, 8/8/97...
  • Page 2 Production Information This document was written using Microsoft Word for Windows V2.0 and 6.0. The drawings and graphs in this manual were prepared using Corel Draw V2.0, Autocad V12, and Autoscript V5, then imported into Word for Windows via encapsulated PostScript files. All page makeup occurred within Word for Windows.
  • Page 3: Table Of Contents

    Table of Contents ___________________________________________________ 1. Introduction............. 1 2. Using the SX202 ............. 2 2.1 The Preamplifiers ............2 2.2 Gain Controls, Clip LEDs, Pads ........2 2.3 Polarity Switch..............3 2.4 Powering for Condenser Microphones ......3 3. Connections, Controls and Switches ....6 3.1 Block Diagram ..............6...
  • Page 4 This page is mostly blank.
  • Page 5: Introduction

    (.007%). Variable gain inputs, with 15dB pads, allow the SX202 to handle any input level up to +14dBV. 48 volt phantom power is available at both inputs. In addition, channel 1 includes a polarity switch, to correct for improperly wired cables or unresolvable mic placement problems.
  • Page 6: Using The Sx202

    SX202's stepless gain control. Input signals as high as +14dBV can be handled by the SX202. The front panel clip LEDs fire at +10dBV output. The SX202's gain controls set how much the signals are actually amplified by the preamp circuitry.
  • Page 7: Polarity Switch

    The pad switch on the SX202 reduces the input level by 15dB. When a very high output mic is used, or for any reason the incoming signal is so hot that the clip indicator is lighted with the gain control at minimum, use the pad. As previously mentioned, the SX202 uses gain controls, not volume controls or faders.
  • Page 8 (dynamics, ribbons, etc.). If your microphone's data sheet says that it is phantom powered, the SX202 can power it The technical requirements for operation and/or compatibility are: The DIN specification (DIN 45 596) covering phantom powering specifies the phantom powering voltage as an open-circuit measurement.
  • Page 9 The microphone must have a balanced, low-impedance output. The balanced output must be floating with respect to ground. If there is a center tap, it must not be grounded. (In the past, it was common to ground the center tap of the microphone’s output transformer.
  • Page 10: Connections, Controls And Switches

    3. Connections, Controls and Switches 3.1 Block Diagram Rev 2.0, 8/1/94...
  • Page 11: Rear Panel Connectors

    Maximum input level: -1 dBV or +14 dBV (pad in). _______________________________________________________ CAUTION: Do not use any AC adapter other than the Symetrix PS-2. Do not short the outputs. Do not stick your finger(s) into a light socket. _______________________________________________________ Rev 2.0, 8/1/94...
  • Page 12: Front Panel Controls And Switches

    15dB PAD PHANTOM POWER POWER CLIP CLIP +48V GAIN GAIN SX202 DUAL MIC PREAMP What Description Yellow LED indicates power “on”. OWER Allows the polarity of mic input Channel 1 to be OLARITY inverted with respect to mic input Channel 2.
  • Page 13: Troubleshooting

    Problem Check or Try This No output Is the PS-2 connected to both the SX202 and a source of AC power? If you are using a condenser microphone, is the phantom power switch (and LED) on?
  • Page 14: Specifications

    15dB Input Pad Outputs low-Z Type Source unbalanced Impedance balanced Minimum Load 600 , balanced or unbalanced Impedance Maximum Output +24dBm, balanced output, 600 Level 1/4” TRS balanced/unbalanced Connectors 16VAC, 200ma (Symetrix PS-2, included) Power Requirements Rev 2.0, 8/1/94...
  • Page 15: Repair Information

    Should you decide to return your SX202 to Symetrix for service, please follow the following instructions. 6.1 Return Authorization Symetrix will service any of its products for a period of five years from the date of manufacture. However, no goods will be accepted without a Return Authorization number.
  • Page 16: Sx202 Limited Warranty

    (90) days. Symetrix' obligations under this warranty will be limited to repairing and replacing, at Symetrix' option, the part or parts of the SX202 which prove defective in material or workmanship within ninety (90) days from the date of purchase, provided that the Buyer gives Symetrix prompt notice of any defect or failure and satisfactory proof thereof.

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