Moog Music Forum

Is it possible for the s trig to affect the application of the 911's ?
I wonder if my V to S trig unit is under powering ?
Or is the S trig simply on/off ? I notice the modular keyboard circuit has quite a few components with a relay and + 12\-6 power.

Shades of Arthur " two sheds" Jackson ?

Thanks CZ...more detailed info like this is really good. I have made an XY clone similar to your build a few months ago but have not sorted the actual output as there's no one definitive source . But I guess +- 15 v input and +- 3.5 output looks the most convincing. If I get any results that are sim...

That's a good video Tom. That XY is certainly very effective. Seems identical to CZ 's clone ? So if the input voltage is +/- 10 v is that what it gives out via suitable resistors thru the black and red jack leads output? I guess it must be...and like you say for a modular it must have been +12. -6 ...

On the wiring schematics for the modulars there is an accessory socket at the rear. Did the XY unit plug into this socket ?
The plug and socket seem to match but hard to tell.
Does anyone know what maximum control voltage output the unit produced ?

Gud stuff Tom...thanks for taking the time to let us see these pics. It's a great instrument.

I too have tried to fathom the workings of this custom module along with the touch sensitive EG' s...how come they were not put into production ?

Thanks John...I'll be using some of your ideas..great stuff.!

Thanks for great info on this topic. Considering what I've seen it looks as though I'll try one of these units as an upgrade to my primitive PSU . John, superb project there, very inspirational in concept and build . Just two queries.....I'm assuming there's no problem with heat dispersion ..no need...

I need to upgrade my home made PSU for my cloned modular. I've seen the Power One PSU units which look pretty good but I have no experience of them. They have dual outputs ..plus /minus I think +12v and -5 v (so that's a problem with the minus rail) I think their rated at 1.7 amp. I think their US m...

Thanks for your replies/opinions... I guess it is the way the modular was recorded and natural compression etc The keyboard rattle did add to the overall sound also ..on listening again there is a lot of distortion perhaps a natural " fuzz box" ? It did add to " heavy metal " tim...

Yes ..i have spring reverb. Tom..my modular was built over a 20 year period on/off ...using vintage components as per original when located. Each module checked over and over and tweaked for authentic build as to original or as close as possible. I have three 901b's and three 921b's...a 904a and 904...

I was pretty stunned to say the least when I heard this Modular. So why doesn't my clone Modular sound like this ? To me this is really how a Moog Modular should sound..total magic. I can only assume that its the output monitors their using (I think a pretty sophisticated powered output feeding 15&q...

I need some advice on inductor values. I've never really worked with these and I'm a bit confused over their values . On the 907 schematics values go from 5H to 150 mH. There are some available from Hong Kong but their listed as 100 mH. What I need to know is would say 10 of these in series make 1 H...

Sorry I should have been clearer with the frequency at O ..then yes there's no apparent jump in pitch..careful adjustment brings them to sync in tone when flipping the rocker switch. I think its just an added resister in the Octave \ semitone switch making the big difference. But it would be great f...