RJM Mastermind GT/10, Руководство пользователя, Страница: 39 / 73

31
Expression Pedals
The Mastermind GT has four ports that allow you to connect external expression pedals. 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 GT 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 each expression pedal to set the controller number, minimum and maximum values and
which device should receive the controller messages. By default, the pedals send CC#7 through CC#10 to the first MIDI
device.
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 and
Korg XVP-10 are examples of pedals that work well, and the Boss FV-500 and Roland EV-5 are examples of pedals that
don’t work well.
Note! Even if an expression pedal does not have the correct polarity, you can still fix it with a specially made cable.
Connecting it to the Mastermind GT with a ¼ -inch TRS cable that swaps the tip and ring conductors will allow you to
use any Roland/Boss type pedal.
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 GT and the two mono ends plug into the input
and output of the volume pedal:
The Mission Engineering SP1-RJM
Mission Engineering makes a model of its SP1 expression pedal that’s designed specifically to work with the
Mastermind GT. This pedal has a built in toe switch and LED which works as an external switch. The toe switch can
perform any function that one of the Mastermind GT’s built-in buttons can, and is edited using the Edit Buttons menu.
To connect the SP1-RJM to the Mastermind GT, you will need two
¼ -inch TRS cables. The first one connects from the
pedal’s Output 1 jack to one of the Expression Pedal inputs on the Mastermind GT. The second cable connects from the
pedal’s Output 2 jack to one of the External Switch inputs on the Mastermind GT.
Expression Pedal Setup
You can set up your expression pedals by selecting the Exp Pedals option from the main Setup Menu. You will be
prompted to select which pedal you’d like to edit, then you will be brought to the Expression Pedal menu: