Micromoog question

Can you combine multiple waveforms on the micromoog? I know it only has 1 osc, and appears like it only has 1 waveform selector knob, but I read somewhere that you can combine different waveforms. I only see 1 waveform knob though.

Also, does the micromoog have keyboard tracking, where I can set the filter to open and close as I play up/down the keyboard?

You can’t combine waveforms in the traditional sense.
The chosen waveform can only be combined with a suboctave and noise.

The filter can also self-resonate and produce a sine wave, but that’s not really the same.
A filter usually overpowers an incoming waveform and doesn’t really “combine” well.

Yes, there’s a filter keyboard tracking switch.
Settings of “Full” or “Tone” will track the keyboard fully.
Normally it “half tracks” at half a volt per octave.

cool thanks. I thought that full/tone switch might be for tracking but wasn’t sure.

On the waveforms, so when you use the suboctave, can it only be a lower octave double of the same waveform?

Like if you have the selector on SQR, can you make the sub octave a SAW?

Suboctave is square only, one or two octave below. A nice touch is variable level of suboctave though.

That’s the extent of “combining waveforms” on the micromoog.

Ok, I think I get it now. Technically you can combine waveforms and detune them, by using the suboctave as your square wave, then using the regular waveform as your saw or rectangle wave. And then use the suboctave knob to detune the square wave and get that detuned multi-osc sound. Thanks guys.

One more question. I got offered a good deal on one, but the seller says the keybed is loose due to missing screws at the bottom. Is anyone familiar with screws at the bottom that hold the keybed in place? Just want to know if it all needs is a couple new screws, or maybe some internal chassis broke thats supposed to hold it in place. Seems odd to me that he wouldn’t have just put new screws in himself if it were that simple.

No, not quite.. :slight_smile:
There’s no detuning.
By design, it cannot be detuned.
A suboctave is produced by digitally dividing the (only) VCO it has.
There’s no multi-osc sound because there’s no multi oscs. :wink:
All you can adjust is the suboctave’s volume and whether it’s one or two octaves below.
The suboctave waveform will always be a square.

Doesn’t seem that odd to me.
Not everyone has self-tapping sheet metal screws (front), 8/32 machined screws (rear) and the special cup washers some of the screws need to use.
More often someone takes screws and washers out of something and loses them. This sounds like that.

Kevin, please explain how the digital divider works?

It’s a dual flip-flop IC. A 4013.
The way it’s wired, it takes two VCO pulses to output a single pulse, thus dividing the freq.
The resulting signal is also divided by the same chip and produces another signal two octaves below the original.
Then using a special pot, one divided signal is fed in to one side, the other to the other side and the original signal in the middle.

Hope that makes sense.