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novel control devices that are powered by the CP251’s red jacks (as well as by any of
the pedal/control jacks on moogerfooger MF-Series products).
Plugging a conventional two-circuit phone plug (tip-sleeve) into any of the red jacks
will not adversely affect the operation of any part of the CP251. Such a phone plug will
short that jack’s pedal supply to ground, causing a current of about 2 milliamperes to
flow through the plug’s barrel.
POWER SOURCE
The CP251 is designed to operate on a conven9 volt power adapter with a
current rating of 200 milliamperes or higher. If you wish to use a special power supply, it
should deliver no less than +9.0 volts and no more than +12.0 volts, and have a
current rating of no less than 100 milliamperes.
SELECTING PATCH CORDS FOR USE WITH moogerfooger MF-SERIES MODULES
Your CP251 will work properly with either two-conductor (Tip-Sleeve) or three-conductor
(Tip-Ring-Sleeve) patch cords. If you use two-conductor patch cords, then, as explained
above, plugs inserted into the red jacks will simply short the pedal supply currents to
ground, with no adverse effects whatsoever to the operation of the CP251.
When used with MF-Series devices however, two conductor patch cords will short out
the pedal supply current that is available at all pedal/control input jacks. Thus, if you
plug a tip-sleeve phone plug into one of the pedal/control input jacks of an MF-Series
device, then none of the pedal/control jacks on that device will be able to supply
power to an expression pedal. This is explained in the user’s manual that accompanied
your MF-Series device.
If you wish to use your CP251 Control Processor with an MF-Series device and you wish
to be able to plug one or more expression pedals into the pedal/control jacks of the
device, then your best bet is to purchase or make a set of patch cords with Tip-Ring-
Sleeve phone plugs, but do not connect the Ring terminals to anything. Alternately,
you can acquire a set of three-conductor patch cords in which the Ring terminals of
the two plugs of each patch cord are connected together. Such cords will not short out
the pedal supply currents that are available at the MF-Series pedal/control jacks when
the other ends are plugged into most two-conductor phone jacks.
GENERAL CONSIDERATIONS
In general, there is little danger that plugging a patch cord into the wrong pair of
jacks will damage the CP251. However, under certain conditions, shorting an output to
ground or connecting two outputs together may affect the proper operation of the
CP251 circuitry. Two good rules to remember are:
1. You can connect one output to as many inputs as you want, but
2. You should never connect more than one output together. Use a mixer to
combine two or more signals.
