Moog MP-201 Technical Information download pdf (Page 26)

PEDAL INPUTS: All pedal

control input jacks are 1/4" tip-

ring-sleeve (stereo) phone jacks.

The sleeves are grounded and the

ring terminals are supplied with

+5 volts which is current-limited.

The tip terminals receive the

variable voltages from the pedals.

An expression pedal for use

with the MF-105M should contain

a 50KOhm or 100KOhm linear

taper potentiometer which is

connected from the sleeve to the

ring terminals. The potentiometer

wiper is connected to the tip

page 26

Figure 14 - EP-2 compatible wiring,

Figure 15 - wiring diagram for using

external CVs with a TRS plug

terminal. The pedal cable should be shielded, with the shield connected

to the sleeve terminal. See Figure 14.

When connecting one or more pedal control input jacks to a source

of external control voltage such as an analog synth or a MIDI-to-CV

converter, you should use patch cords with tip-ring-sleeve phone plugs.

The ring terminal on the plug should not be connected to anything, so

that the MF-105M’s source of +5 volts is not shorted out. See gure 15

for a diagram. If you do not plan to use any expression pedals with your

MF-105M but would like to apply control voltages to one or more pedal

control inputs, you can use patch cords with regular two-conductor phone

plugs. These will short out the +5 volt supply to the ring contacts. This

voltage is current-limited, so you won’t burn anything out, but no pedal

will work in any of the pedal control jacks if a tip-sleeve plug is plugged

into any of the pedal jacks.

Applying a varying voltage to the tip terminal of a pedal control input

jack has the same effect as turning the corresponding knob. On the MIDI

MuRF, with the knobs in the mid-position, a voltage change of 0 to + 5

Volts at the tip terminal is equivalent to turning the corresponding knob

through its entire range from full counterclockwise to full clockwise. You

can ‘program’ your MF-105M performance parameters entirely from

external control voltages, by turning the ENVELOPE, MIX, and RATE

control knobs to mid position, and feeding 0 to +5 Volt programming

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 35 36

No comments

Moog MP-201 Technical Information Page 26