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DX7mega128 

Page 2 of 8 

User Guide v1.30 

 

www.musictechnologiesgroup.com 

Preliminary 

Installation 

 
You  are  looking  at  the  wrong  document.  Please  refer  to  the 

DX7mega128  Installation  Guide

 

available on the www.musictechnologiesgroup.com website.   
 
 
 
 

Manual Conventions 

 
Regarding the LCD, this manual shows the variable part of the LCD content using an underline. 
The  DX7  itself  is  not  able  to  underline  more  than  one  character,  but  this  convention  makes  it 
easier to visualize the changing part of the LCD versus the fixed part. 
 

THIS AREA IS FIXED 
AND THIS: CAN CHANGE 

 
 
 
 

Version Check 

 
You  can  check  the  version  of  your  DX7mega128  by  pressing  the  brown  FUNCTION  key  and 
while holding it down press and hold 16 and 32.  You should see a version message such as: 
 

DX7mega128 

Version 1.20 

 

       or 

 

 MIDI Out Vel=+0 

Version 1.30 

 
 
 
Press the green INTERNAL button twice to escape. 
 
 
 
 

Updates to MIDI (Function Button 8) 

 
The following items are available on button #8 in Function mode: 

 

MIDI Ch In = 1

 

Settable MIDI Receive channel, or OMNI mode 

 

Local Control=ON

 

Enable/Disable keyboard play of DX7 sounds 

 

SYS INFO UNAVAIL 

Enable/Disable System Exclusive

 

 

 
 
 

Summary of Contents for DX7mega128

Page 1: ...zone low key to high key within which the local keyboard sounds the internal FM sound engine per patch Programmable Patch Volume Each patch can utilize a volume to even out the DX7 levels when changing patches Voice Stacking You can stack and detune two or four voices of the same patch You then have a choice of 16x1 8x2 or 4x4 polyphony The detuning can provide chorus effect and or chording and or...

Page 2: ...to visualize the changing part of the LCD versus the fixed part THIS AREA IS FIXED AND THIS CAN CHANGE Version Check You can check the version of your DX7mega128 by pressing the brown FUNCTION key and while holding it down press and hold 16 and 32 You should see a version message such as DX7mega128 Version 1 20 or MIDI Out Vel 0 Version 1 30 Press the green INTERNAL button twice to escape Updates ...

Page 3: ...expander Function Patch value OFF so that one global set of function data is used for now 3 Initialize the expander Function data using the Function INIT Menu option choose Yes 4 Set the expander active Memory Bank to 1 5 Load a set of patches from cartridge or system exclusive If the latter is used then Sys Info must be set to Available first Steps 1 and 5 are standard DX7 user manual stuff For t...

Page 4: ...nd if you press the same key repeatedly The DX7 remembers the last activated Function parameter and it is live on the panel data slider and Yes No buttons even in normal play mode FUNCTION CONTROL Memory Bank 4 FUNCTION CONTROL Volume Out 5 FUNCTION CONTROL Func Patch OFF FUNCTION CONTROL Func Data INIT _ FUNCTION CONTROL MIDI Ch Out 16 FUNCTION CONTROL KB Zone Lo C1 FUNCTION CONTROL KB Zone Hi C6...

Page 5: ...xpanded memory is to leave the most recently selected MEMORY BANK button live in Function mode When you return to play mode the data entry control remains active on the memory bank parameter thus making easy to access all 128 voices When you select a patch via the front panel its patch number 1 through 128 will be transmitted on the DX7 s MIDI OUT Another way to select patches is through MIDI IN T...

Page 6: ...tilize Function Patch then the Volume setting isn t really of much use since it will be global and there is already a dedicated analog Volume slider on the DX7 2 4 Function Data Initialization This sets the Function Data to a known good state This should be performed after board installation and whenever dubious function data is found such as might happen after loading from a ROM or RAM cart or Sy...

Page 7: ...tuning of the extra voices DX7mega128 allows you to stack a DX7 patch in modes of 16x1 standard no stacking 8x2 or 4x4 Each of the extra voices can have its pitch offset Thus you can create not only chorus flange type effects but also octave and chording FUNCTION CONTROL Voice Stack 2x8 To utilize this feature the first step is to select which Voice Stack mode you would like There are up to three ...

Page 8: ... keyboard has a restricted range on the maximum MIDI Note On velocity it transmits If you strike a key extremely hard you can get a maximum velocity out of 118 76 hex A hardware fix has been included that allows the player to obtain full MIDI Note On velocity of 127 7F hex without fear of damaging the keybed The DX7mega128 circuit board has a switch S1 that allows you to change between default 0 a...

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