Hey all,
Out of curiosity, did anyone ever design a dedicated LFO module to be tied into the old Minimoog’s CV in to free up Osc. 3?
What about a ring modulator?
A local tech added a dedicated LFO to my Model D. Has several wave forms and a rate knob. It shares the osc 3 / noise pot, there’s a switch to select between noise or the Dedicated LFO. What can be cool is to " mix osc 3 and the dedicated LFO, kind of like what you can do on a Sonic 6 
.
One of the cool mods a owner previous to me had done was to add an octave up switch, comes in handy once in awhile, but most of the time I never use it .
Love the Model D, Love the Voyager, for some things I prefer the D, others the Voyager, then others…
Brian
Hello,
Rivera Music Services in the Boston, Mass area offered one back in 1980.
It was an internal mod (dubbed “lfo 4”) that installed just below the the glide and mod mix pots in the Mini.
It had a range of .1Hz-30Hz and offered a choice of triangle or square waves. The output of the lfo was routed to the mod mix control on the Mini via a switch. The switch allowed a choice of noise or the additional lfo as a mod source when the mod mix pot was fully clockwise
When set counter-clockwise, it still allowed osc 3 as the mod source.
If set in the center position, the mod mix ctrl provided a mix of
Osc 3 and noise or Osc 3 and the additional lfo as simultaneous sources.
Regards,
LWG
I’ve added a few mods on different minis.
Two different ring mods, one digital, one analog.
Hard sync with env depth per vco
Suboctaves -1 and -2
Ten turn tuning pots
PW modulation
LFO (2 waveforms only)
Expanded ranges (longer glide, deeper modulation, etc)
Many different lit wheels including ones with lights that change color or have a touch plate, etc.
The ring mods and suboctave mods were done with no additional holes drilled.
They are fed into the external in jack (disabled by a plug inserted) and that controls the volume. On the suboctave mod, I made the noise switch also change the suboctaves from -1 to -2.
There’s tons of smaller mods done here also and many more possible.
One could have inverted envelopes, chromatic transposition, etc, etc.
Thanks fellas,
Two other things that I’d probably opt for in a modified Model D include a sample-and-hold generator and a pitch envelope for Osc 2. Both are available on the ARP Odyssey, but not necessarily on the original Mini, right?