Voodoo Lab SYSTEM MIX PLUS Owner'S Manual Download Page 3

D I G I T A L   M U S I C   C O R P O R A T I O N  

 
 
 

1.  Introduction

  

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1.1  Overview 

 

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. 
 
Additional features have been built in to System Mix Plus to facilitate recording directly into a 
studio mixing console or connecting directly to a PA system for live use.  These include: 
 

  Speaker cabinet simulation circuitry, switchable for either "2x12 open" or "4x12 closed" 

cabinet sounds. 

  Balanced XLR outputs. 

  A versatile headphone monitoring system with separate volume controls for your signal 

and an external feed. 

 
System Mix Plus also features a MIDI controlled stereo volume control, also referred to as a 
VCA (Voltage Controlled Amplifier).  The volume control, which can be inserted 

anywhere

 in 

your line level signal path, responds to the Ground Control or any device which can send MIDI 
control change messages.  This allows you to control your volume without having to run audio 
cables out to your volume pedals. 
 
Front-to-back passive feedthrus are provided for four audio feeds and MIDI.   
 

 

1.2  Unpacking 

 

Your factory carton should contain: 

1. This 

manual 

2.  System Mix Plus 
3. Power 

supply 

4. Warranty 

card 

 
Please fill out the enclosed warranty card and return it to Digital Music Corp.  By 
registering, you enable us to send you important information about related products, updates 
and accessories.    

Summary of Contents for SYSTEM MIX PLUS

Page 1: ...SYSTEM MIX PLUS Owner s Manual DIGITAL MUSIC CORPORATION...

Page 2: ...1 3 2 Mix 2 3 3 Setting Levels 4 MIDI Volume 8 4 1 Connections for the Volume Control 4 2 Using the Volume Control with Ground Control 4 3 Using the Volume Control without Ground Control 5 Recording P...

Page 3: ...ed XLR outputs A versatile headphone monitoring system with separate volume controls for your signal and an external feed System Mix Plus also features a MIDI controlled stereo volume control also ref...

Page 4: ...information 4 MIX LEVEL CONTROLS Stereo volume for MIX 1 and MIX 2 Unity gain is set with the knob at 12 o clock 5 CABINET SIMULATOR In Out Switches the speaker cabinet simulator on and off Simulator...

Page 5: ...e 1 4 inch jacks on the rear panel are for mono plugs Except for the four FEED THRUs the top row is for the Left channel of your stereo signal and the bottom is for the Right Any mono signals should b...

Page 6: ...broken 9 Mix 2 Out Left and Right line level outputs from Mix 2 10 Direct Out Line level outputs from Mix 2 If the Cabinet Simulator is switched in these outputs are affected 11 Volume In Stereo line...

Page 7: ...These outputs are used to drive the inputs of your effects devices Mix 1 Outputs There are two identical stereo pairs of outputs for Mix 1 Mix 1 is also internally connected to Mix 2 These outputs ca...

Page 8: ...direct signal off If you are using the System Mix Plus volume control set the volume to its maximum 2 Amp signal Play the guitar and adjust the preamp output level or the amp s effect send level unti...

Page 9: ...l Connect the left and right volume control input output jacks independently Stereo pan control Connect the mono output of your source to the left volume control input Then connect the left and right...

Page 10: ...r is bypassed When the switch is pushed in the simulator is on When turned on the Cabinet Simulator affects three different audio outputs The two Direct Out unbalanced inch jacks on the rear panel The...

Page 11: ...cancellation If the guitar signal in the headphone mix sounds funny or hollow try this switch For Recording Connect a stereo TRS cable from the headphone feed at the studio to the MONITOR IN jack Now...

Page 12: ...The guitar is connected to the amp or preamp input The preamp output or amp effect send is connected to the Left volume control input 2 The signal comes out of the volume control and is fed into Mix 1...

Page 13: ...don t want to use the volume control then connect the amp directly to Mix 1 In 1 The passive split sends copies of the preamp signal to the mono inputs of the effects devices 3 The stereo outputs of...

Page 14: ...ur solo can linger on as you start to play rhythm again There are many benefits and uses of this type of smooth transition The following examples show how to use the GCX with the System Mix Plus For s...

Page 15: ...on 3 3 to correctly set levels System 2 GCX Loops This example uses six loops to switch the inputs of the effects It is important to note that although FX 1 and 2 are stereo they begin with a mono sig...

Page 16: ...puts on FX 3 and 4 allowing them to be muted by the GCX The Mix 1 signal is sent to Mix 2 via the internal connection and the stereo outputs of FX 3 and 4 are brought back to the mixer In 2 and In 3 o...

Page 17: ...22k Maximum Input Level 7 V RMS or 19dBu Maximum Voltage Gain 6 dBu Output Drive 7 V RMS across 5k Direct Out Output Drive 7 V RMS across 5k Balanced Outputs Output Drive 7 V RMS across 600 Headphone...

Page 18: ...17 D I G I T A L M U S I C C O R P O R A T I O N Appendix B Block Diagram ________________________________________________________...

Page 19: ...o any goods that have been repaired or altered by anyone other than the manufacturer There are no warranties which extend beyond the terms described herein Should you experience any difficulty with th...

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