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receptacle. (See Page 28 for more detailed information on power adapters for the
CP251.) Note that the LED in the LFO section lights up.
Before we begin on our tour, let's look at two of the CP251's features.
Placing your CP-251
:
Unlike the moogerfooger MF-Series effects modules, the CP251 is housed in a low
rectangular enclosure. It's designed to be used in conjunction with one or more MF-
Series modules and/or other voltage-controlled gear, and to be placed where it is most
convenient. Where you place it in your setup will depend primarily on how you arrange
the rest of your gear. One possibility is to place the CP251 behind your effects
modules, so the patch cords to the modules are short. A second possibility is to place
the CP251 on a table or stand, and run longer patch cords to your voltage-controlled
gear. In this way, you can "play" your CP251 with your hands during performance. A
third possibility is that you can custom-mount your CP251 in an equipment rack. With its
wood end-caps removed, your CP251 is exactly the right size for a 3-unit high, half-rack
space. Note that there is a 9V power input jack on the CP251's bottom plate,
which can be used when the unit is rack-mounted.
The "Red Jacks"
Eight of the CP251's jacks are held with red nuts. These input jacks are equipped with
power for expression pedals. You can plug an expression pedal directly into any of
these jacks - or use the jacks as conventional inputs. The CP251 jacks with black nuts do
not supply power for expression pedals.
Let's now begin our CP251 tour. We'll begin with the LFO module, which is a control
signal source.
LOW FREQUENCY OSCILLATOR
An LFO (Low Frequency Oscillator) provides repeating waveforms that may be used
for control and timing in voltage-controlled systems. The LFO in your CP251 provides two
waveforms: triangular and square. The output jacks are labeled with graphic symbols
that indicate the waveforms.
The RATE knob varies the speed of the LFO's waveforms over the range of one cycle
every five seconds (0.2 Hz.), to 50 cycles per second (50 Hz.). The LED brightness follows
the triangular waveform, thereby providing a visual indication of the rate. The PEDAL IN
jack is a control input which may be used to voltage-control the LFO rate.
•Connect a patch cord from the LFO's triangular output, to the pitch control input of
your VCTG.
•Set the RATE knob to mid position.
Note that the resulting pitch fluctuation is very wide, usually covering as much as five
