8
POWER
Plug one end of the supplied AC cord into the standard IEC power connector on the Sub 37’s left-side
panel. Plug the other end into an AC outlet. Warning: An apparatus with CLASS I construction (such as
this device) shall be connected to a MAINS socket outlet with a protective earthing connection. The Sub
37’s universal power supply will operate with 50/60Hz AC power sources ranging from 100 to 240 VAC
/ 50-60 Hz using 13W. Flip on the power switch located next to the power connector.
NOTE: It may take as long as 60 seconds for the Sub 37 to warm up before oscillator tuning has
stabilized if you’ve left it outside on a cold night. (Although its oscillators are surprisingly stable, the Sub
37 is an analog synthesizer, after all.)
AUDIO OUT
With the MASTER VOLUME turned all the way down, plug one end of a 1/4 inch instrument cable into
the Sub 37’s AUDIO OUT jack and the other end into an amplified speaker or mixing console input.
Adjust the level by slowly turning the MASTER VOLUME knob clockwise while playing the keyboard.
If you’ll be using headphones, plug them into the headphones jack (on the front panel’s bottom-right
corner) with HEADPHONE VOLUME turned all the way down. Adjust the level by slowly turning the
HEADPHONE VOLUME knob clockwise while playing the keyboard. Note that MASTER VOLUME
must be turned up as well.
EXTERNAL AUDIO IN
Located just above the AUDIO OUT jack, the jack labeled EXT IN allows the Sub 37 to shape and filter
external sounds. This is an unbalanced input that accepts a line-level signal.
NOTE: You must press a key to pass external audio through the Sub 37. You also can use a Moog FS-1
footswitch, or simply press the LATCH ON button in the Amplifier Envelope section and make sure that
the Amplifier Envelope’s SUSTAIN level is up.
USB
To use the Sub 37 with a computer, connect one end of a USB cable to the Sub 37’s USB port and the
other end to an available USB port on your computer. The Sub 37 supports MIDI I/O over USB, but not
audio data. The Sub 37 is class compliant. No drivers are required for USB MIDI connectivity.
MIDI
Using the Sub 37 with an external MIDI device requires one or two MIDI cables. To use the Sub 37 as a
MIDI controller, connect one end of a MIDI cable to the Sub 37’s MIDI OUT jack and the other end to
another device’s MIDI IN jack.
To control the Sub 37 from an external MIDI controller, connect one end of a MIDI cable to the Sub 37’s
MIDI IN jack and the other end to an external controller’s MIDI OUT jack. By default, the Sub 37 is set
to transmit and receive MIDI data on MIDI Channel 1.
CONTROL VOLTAGE IN
The PITCH CV, FILTER CV, and VOL CV inputs each accepts an expression pedal (such as the Moog EP- 3)
or a control voltage signal from 0 to +5 volts. If you connect a TRS expression pedal to VOL CV, you can
use your foot to control the Sub 37’s output level. If you connect a TRS expression pedal to FILTER CV,
you can sweep the filter cutoff in the same manner. The PITCH CV input is calibrated so that a one-volt
change in the control voltage will result in a one-octave change in frequency.
The KB GATE input accepts a +5 volt signal, which causes the Sub 37’s envelopes to trigger.