Another Pultec-y looking thing

[k brown]

This one's based on the rather obscure Oberheim OB-Mx, which came out after Tom had left the company and was actually a project begun by a team that had a lot of trouble, so Don Buchla (of all people) was brought in to bring it to completion.
https://electronicmusic.fandom.com/wiki/OB-Mx
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PB-Mx copy.jpg (159.54 KiB) Viewed 10637 times

PB-Mx.fsm

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- Two wave-mixing oscs, with separate Portamento. Each can phase modulate the other.
- Two Filters - a 4-pole LP and a 2-pole Multimode; each with it's own input mixer.
- Two pannable amps.
- Three LFOs
- Four DAHDSR EGs.
- 14-slot Mod Matrix.
The hardware was a real headache to program; the panel only had a single set of controls for most of the sections, so you could only adjust one osc at a time, one LFO at a time and one EG at a time. Here, of course, all is visible and accessible at once.
This represents one of it's 'voices', so is not 'multitimbral' like the hardware.

Personally, I thought the OB-Mx's interface was a real snoozer (except for that great logo),

obmx.png (367.36 KiB) Viewed 10617 times

so it made a great candidate for 'the Pultec treatment'. The blue panel can be switched to red.
The OB's Mod Matrix is represented as a Patch Bay.
Be sure to read the info pane on the LFOs - they have some unusual controls and capabilities that show the unmistakable hand of Buchla.

[BobF]

Thanks Kevin,
A couple more really great synths, just can not get my head around how you do them so fast. Super work!

Cheers BobF.....

P.S., If you get the time I would really like to see you redo the Cyrnx using my "Dual Peak Band Pass Filter" as you mentioned awhile back.

[tektoog]

Great, thanks!
It took me a little time to find the preset manager, maybe one line thicker would make it more obvious, no drama...

[k brown]

@ BobF - PB-Mx was done months ago; I just couldn't post it because of the 'attachments lock-out'.

Re: CyRinx -I made a rash assumtion at the time, based on your description - your filter works actually quite differently from the Syrinx's.

[k brown]

Replaced schem in original post - fixed incorrect connection in SVF BP output.


Updated 5/13 - should use slightly less CPU now.