Moog Music Forum

Hey Folks

Trying to use the External Instrument feature for the filter (also using an expression pedal)

What are the board setting to get just your instrument through the filter?

I need a walk through.

Cheers

Gordon

Hi Gordon,

In MIXER, make sure that the FDBK / EXT IN button is lit.

Set FDBK / EXT IN knob to 5 (12 o'clock)

Light the AMP ENVELOPE's LATCH ON button.

Set AMP SUSTAIN knob to 10.

Initially, turn FILTER CUTOFF knob all the way up.

Thankyou, but it is the Sub 37 ye speak of, whilst I'm using the Sub Phatty.

I believe this translation may work.

In MIXER, make sure that the FDBK / EXT IN button is lit.
Sub P ---> Plug instrument into EXT IN Jack

Set FDBK / EXT IN knob to 5 (12 o'clock)
Sub P ---> Shift Mode, MIXER/NOISE knob

Light the AMP ENVELOPE's LATCH ON button.
Sub P ---> Open the keyboard gate. Play a key or plug foot switch or any cable into KB GATE Jack

Set AMP SUSTAIN knob to 10.
Sub P ---> Same

Initially, turn FILTER CUTOFF knob all the way up.
Sub P ---> Same

I'm wondering how folks are using this? I thought I could pug a drum track through to play along but... It only plays when a key is pushed or with the latch a note continuously sounds. I guess if you just want to run something else through the filter its OK but it seems to paralyze the rest of the synth.

I think it works best for use as an additional oscillator although it can certainly be used just for the filter. You can't really use it to feed a backing track through since it goes through the rest of the signal path.

I have my Sub P output routed to the Sub 37 external input and use it as an extra oscillator.

I have the input running into it from an output channel on my audio interface. That way within the daw (Live in my case) you can route anything out to it then back through the SP into the daw again. I've bussed an entire mix out to filter it then recorded that back to another channel. This works wonderfully when you modulate changing the filter poles with an LFO in software over midi to the SP.

Mostly these days I run an FM synth in Live into it as another oscillator. I use Operator in Live & just some simple one or two element sounds, sines or squares. The midi from the SP is also routed to the FM synth so a note pressed opening the gate on the SP also triggers the FM which goes to the input. Gives another element in the mix for the SP + you can still modulate the filter poles on top which sounds great.

So this thread has been quiet for quite some time, but I do have a question, which probably comes down to basic circuitry principles.

I'm running a midi polychain from Live via USB into my Sub Phatty (ch. 1), and then out via DIN to a Mother-32 (ch. 2).

Channel 1 is carrying a lead MIDI clip, channel 2 to the m32 is carrying a sustained bassline.

The master out of the m32 routes to the external audio input on the sub phatty, and from there, to an i/o, back into the daw.

What I'm experiencing, is that the summing of the saw bassline from the m32 is seriously chopping away at the lead being performed via osc 1+2 on the sub phatty. Obviously, when reducing volume or entirely muting the m32's bassline into the phatty, the clean sounds of the sp oscillators come back to life.

I could just send the m32 output to the i/o, but running it through the SP's filter and multidrive is preferable.

That said, the sound is most definitely analogue, which is really pretty sexy over the cold lifelessness of a soft oscillator group, but still, sometimes clean is necessary.

Ideas? Not possible with actual voltage?