User`s manual

Expression Pedal
The MasterMind has a port that allows you to connect an external expression pedal. An expression pedal can be used
with MIDI-capable effects processors to provide real time control of different parameters: volume level, echo rate, etc.
The MasterMind translates the position of the pedal to MIDI Continuous Controller messages and sends them out the
MIDI Out port. The effects processor receives these messages and alters the effects accordingly.
Using Setup Mode, you can set the expression pedal to send a different Continuous Controller message for each preset
on the MasterMind. By default, it sends CC#7 (volume) on MIDI channel 1.
Many expression pedals on the market will work. Pedals that have a stereo (TRS) 1/4” output jack and have the
potentiometer wiper connected to the ring conductor of the output jack will definitely work. The Rocktron Hex is an
example of one that works well, and the Roland EV-5 is an example of one pedal that doesn’t work well. Check the FAQ
section on the RJM Music website for the current list of pedals known to work with the MasterMind.
You can also use a standard volume pedal as an expression pedal. For this you need a 1/4” Y-cable, also known as an
insert cable. The stereo end of the Y cable plugs into the MasterMind and the two mono ends plug into the input and
output of the volume pedal:
8
Tip
Ring
Sleeve
Sleeve
Tip
Tip
Sleeve
To MasterMind Exp Pedal Jack
Volume Pedal Input
Volume Pedal Output