Moog Music Forum

Quick question.. Should i be able to hear white noise on filter modulation with noise switched off? got a Model D. Definitely hearing a white noise hiss on the filter and the only way i can get rid of it it to hang the noise switch in a position between white and pink.. that can't be right, can it? ...

Thanks. didn't really want to go looking for someone else to have a shot at it but maybe that's what it needs.
I did consider buying one of those repro '4' PCBs and if it worked, using it to compare with my one.. then hopefully selling it on if i find the problem.

i must be looking at a sightly different schematic to you as the numbers you're using don't match: http://www.fantasyjackpalance.com/fjp/sound/synth/synthdata/16-minimoog/schematics300/minimoog-schematics-04.gif But I think i follow you all the same. I'm pretty sure it's a problem on the PCB as i've...

Yeh tried that. (is that R609 on the schematic?)).

Hi, so the Emphasis knob on my model D no longer works.. it has no effect. I pulled out board 4 and checked the knob was functioning and had continuity to the PCB socket. No problems. Also checked my +10 and -10 volts - ok. There's also a line on the filter board marked +15v.. it appeared to have so...

oh I forgot the cp251 has that on it.. yeh that works a treat. I think I still want to build one in from scratch but that does the business for now.

http://www.doepfer.de/DIY/a100_diy.htm
Inverting amplifier.

That'd do the trick, yeh?

Hi, i have a theremin module that's giving me a CV signal like this: / need it to go like this: \ turn it upside down, see? make the high low and the low high :) Can anyone with some synth experience tell me what you'd call such a process and if anyone has could point me to a circuit I could build? ...

Ohi get it. It just tweaks the wiring. Few minutes with the soldering iron will duplicate that no prob. Thanks.

http://cgi.ebay.co.uk/Moog-MuRF-Pattern ... 3a5576c750

can anyone work out what this actually does?

I think I can answer my own question and will do so just in case anyone else finds the info useful. I found as a played with the pedal the fault became more difficult to replicate. I also noticed some of the sliders had a slight bit of crackle on them.. As I played with them that went away. So I thi...

No mention of Rick Wakeman and Yes on the minimoog page?
Tangerine Dream too ?

I just picked up a second hand MuRF. Checking it out it appears mostly ok but I noticed that if I crank the 3.4k slider all the way to the top and play a short stab of sound, I can generate noisy feedback in the MuRF that slowly builds until the overload light turns red and the unit crunches out. It...

Just Me wrote:Jurgen Haible is preparing to make boards and a kit.
http://www.jhaible.de/vocoder/living_vocoder.html

Oh that very much looks the business. Thanks for the tip. I'll follow that project with great interest.

[Robot Voice] I was eyeing up a project home made vocoder on ebay but the price got a bit strong for me: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=310237555023 But I do quite fancy the idea of making a vocoder. I built a Paia vocoder a while back. It's a nice simple project and the re...