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Summit Audio Model MPC-100A
Mic Preamp/ Compressor
Operating Manual
IMPORTANT!: CAREFULLY READ THE ENTIRE INSTRUCTION MANUAL
BEFORE HOOKUP OR OPERATION OF THE MPC-100A.
WARNING!: HIGH VOLTAGE. THIS UNIT CONTAINS NO USER SERVICEABLE
PARTS. SERVICING SHOULD ONLY BE DONE BY QUALIFIED SERVICE
PERSONNEL OR FACTORY. DO NOT OPERATE THE MPC-100A WITH THE
COVERS REMOVED
.
Summit Audio, Inc.
1183 Baltic Suite A
Gardnerville. NV 89410
Copyright 1997, 1999 Summit Audio Inc. ALL RIGHTS RESERVED. Printed in the
U.S.A.
Doc.# 523A00
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Summary of Contents for Summit Audio MPC-100A
- Page 1 PARTS. SERVICING SHOULD ONLY BE DONE BY QUALIFIED SERVICE PERSONNEL OR FACTORY. DO NOT OPERATE THE MPC-100A WITH THE COVERS REMOVED Summit Audio, Inc. 1183 Baltic Suite A Gardnerville. NV 89410 Copyright 1997, 1999 Summit Audio Inc. ALL RIGHTS RESERVED. Printed in the U.S.A. Doc.# 523A00...
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Page 2: Product Introduction
990, discrete output stages Hand crafted in the USA Having found this manual, carefully unpack the MPC-100A and it’s power cord. Save the carton and packing material should it be needed for future shipping. Before powering the unit, read this manual. Please observe the cautions for HIGH VOLTAGE. Proceed by doing the following: 1. - Page 3 THE CONTROLS 1. Line/Mic/48 3 position switch selects the input being used, line or mic, and also engages the phantom power +48 volts for condensor microphones 2. Pad/-20 2 position switch engages 20 dB of input signal attenuation 3. Phase/180 2 position switch engages a 180 degree phase shift of the signal 4.
- Page 4 16. Link/In/Bypass 3 position switch selects stereo linked compression, compression engaged, or bypass compressor (preamp by itself) note: when linking two MPC-100A's for stereo operation, the unit which is set for the most compression will act as the controller for both units;...
- Page 6 Getting a clean microphone signal: Plug the microphone into the mic input on the back of the MPC-100A and set the input switch to mic (or 48 for condensor mics needing 48 volt phantom power). Make sure both the preamp and compressor gains are turned all the way down.
- Page 7 De-essing: (Requires external EQ) Plug a TRS insert cable into the side chain jack on the back of the MPC-100A. Plug the send (tip) of the insert cable to the input of the EQ, and the return (ring) of the cable to the EQ output.
- Page 8 1/4" mono jack Tonality: because there are two stages of vacuum tube gain in the MPC-100A as well as a discrete, solid state gain stage, the range of tonality in the unit is significantly wide; we recommend that you experiment with moderately overdriving either or both of the tubes and compensating for desired output level using the discrete gain control;...
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Page 9: A Word About Tubes
A Word About Tubes The tubes that are used in the MPC-100A are selected to give the best possible performance in the position that they are in the circuit. Switching them to different positions might cause performance deterioration of the audio path. - Page 10 Note: When running an unbalanced output it is best to connect pin 3 to pin 1 in the connector that plugs into the MPC-100A. Allow the MPC-100A to warm up for at least 15 minutes before using it in your processing chain. The tubes and other circuitry need time to reach an electronic equilibrium before they will operate at optimal specifications.
- Page 11 However, when used in noise, frequency response, and distortion measurements, weighting will alter the results. Completely flat frequency measurements are key to giving accurate specifications. Summit Audio devices are the highest quality professional audio gear and the specifications below are made with the flattest possible unweighted measurements, giving the most accurate results.
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