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Summary of Contents for Voodoo Lab SYSTEM MIX PLUS
- Page 1 SYSTEM MIX PLUS Owner's Manual DIGITAL MUSIC CORPORATION...
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Page 2: Table Of Contents
Table of Contents ________________________________________________________ 1. Introduction ....2 1.1 Overview 1.2 Unpacking 2. Operation ....3 2.1 Front Panel 2.2 Rear Panel 3. -
Page 3: Introduction
System Mix Plus is a dual stereo line level audio mixer designed specifically for electric guitar systems. With System Mix Plus, you can combine the line level outputs of your rack effects with the pure tone of your amp or preamp. This results in lower noise and better tone. -
Page 4: Operation
________________________________________________________ 2.1 Front Panel 1. Power Switch: Applies power to System Mix Plus. 2. MIDI FEED: Direct passive feed thru to the MIDI FEED on the rear panel. 3. Level LEDs: Indicate output level of Mix 1 and Mix 2, not left and right. The thresholds... -
Page 5: Rear Panel
10. MONITOR Ground Lift: Disconnects the sleeve of the MONITOR IN jack from ground with the button pushed in. 11. MONITOR Phase Invert: With the button pushed in, the phase of the MONITOR IN signal is inverted. 12. HEADPHONE LEVEL Direct: Adjusts the headphone volume of your mixer signal. 13. - Page 6 8. Mix 2 Inputs: Four stereo, line level inputs to Mix 2. Note: Mix 2 In 1 controls the internal connection (normal) from Mix 1 to Mix 2. If nothing is plugged in to these inputs, the outputs from Mix 1 feed through to Mix 2. If something is plugged in to these inputs, the internal Mix 1/Mix 2 connection is broken.
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Page 7: Mixer
3. Mixer ________________________________________________________ 3.1 Mix 1 General Mix 1 consists of four pairs of Left and Right inputs, two Passive Split outputs, and two pairs of MIX 1 outs. All of these jacks are for mono plugs, and are intended for line level signals. For mono signals, use only the Left input and the signal will feed into both the Left and Right channels. -
Page 8: Setting Levels
The System Mix Plus inputs are set to unity gain. The relative levels of all of your inputs are therefore determined by the output levels of your devices. Setting levels is a critical part of your guitar system. -
Page 9: Midi Volume
Then connect the left and right volume control outputs to the next device in the system. To use the MIDI volume control in your System Mix Plus, you also need to plug something into the MIDI IN jack on the rear panel that can send the appropriate MIDI commands. You have two choices: 1) Digital Music Corporation's Ground Control or 2) something other than Ground Control. -
Page 10: Recording & Pa
________________________________________________________ 5.1 Cabinet Simulator The System Mix Plus Cabinet Simulator processes your line level signal to make it sound like it was amplified through a speaker cabinet and miked. This allows you to connect your guitar directly and still sound like a carefully miked, high quality cabinet. - Page 11 • Phase Invert Button: Inverts the phase of the MONITOR IN signal. If the guitar signal in the mixer is out of phase with the one coming back in the MONITOR IN, you will notice some frequency cancellation. If the guitar signal in the headphone mix sounds "funny"...
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Page 12: Putting Your System Together
6. Putting Your System Together ________________________________________________________ The System Mix Plus is a very flexible and versatile mixer. It can be used in many different ways. The following examples demonstrate some typical systems. Your needs may require different connections. These systems are simply meant to be starting points. Remember, all connections are intended for line level signals only, NOT speaker connections. - Page 13 In this example, the Mix 1 knob controls the level of the preamp, and the Mix 2 knob controls the level of the entire mix. Please refer to Section 3.3 to correctly set levels. System #2 This is a system that demonstrates a two stage effects system.
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Page 14: Using With A Switching System
The following examples show how to use the GCX with the System Mix Plus. For simplicity's sake, they show how the GCX would be added to the same systems described above. - Page 15 3. The stereo outputs of the effects are brought back to the mixer to be blended with the original preamp tone using In 2 and In 3 of Mix 2. Mix 2 In 1 is being used by the internal connection with Mix 1 (the preamp).
- Page 16 3. The stereo outputs of the effects are brought back to the mixer to be blended with the original preamp tone. For FX 1 and 2, we will use In 2 and In 3 of Mix 1. These effects will be blended in parallel with the original preamp tone.
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Page 17: Technical Specifications
Appendix A ________________________________________________________ Technical Specifications Mix 1 and Mix 2 Input Impedance Left and Right channels 44kΩ Left only, used as mono input 22kΩ Maximum Input Level 7 V RMS or +19dBu Maximum Voltage Gain +6 dBu Output Drive 7 V RMS across 5kΩ Direct Out Output Drive 7 V RMS across 5kΩ... - Page 18 Appendix B: Block Diagram ________________________________________________________ D I G I T A L M U S I C C O R P O R A T I O N...
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Page 19: Warranty Information
1320-A Industrial Avenue Petaluma, CA 94952 Digital Music Corp., Ground Control, GCX, System Mix Plus, and Ground Control System are trademarks of Digital Music Corporation. Copyright 1995 by Digital Music Corp. All rights reserved. No part of this publication may be reproduced or transmitted by any means or in any form, without the express prior consent in writing from Digital Music Corp.
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