Moog Music Forum

Hi ProspectHillMusic, in recent years, I have built a clone of the System 55; I never presented it publicly, as I made it just for my own fun. The modules I made are pretty accurate Moog clones, both aesthetically and functionally. I have some modules that I don’t use, or I want to replace with othe...

Ah, yes, it is the one with "P" at the end:

https://www.digikey.it/en/products/deta ... -7P/340963

All the best
L

Hi roginator,

this:
https://www.digikey.com/en/products/det ... -7S/340964
is the correct plug.

Have fun
Leonardo

Hi, the tempco used for the 921 are 1k±3% TC. In the original Moog construction they used Tel Labs Q81, which nowadays are quite hard to find. I purchased mines from Synth Cube some years ago; don't remember the exact part number. According to the original Moog 921 construction, the TC is mounted un...

Hi all, I have an ARP Pro DGX, which I used to use for performing the FoF solo. The preset voice I used is the Trumpet, that Tony Banks appears to have used in live situations, at least in the early period. The synth solo of the original studio recording is more complex, impossible to be replicated ...

Am I right in thinking that the CP11 Controller Outputs section convert V-Trig signals (Control Voltage) to S-Trig signals (Trigger) via the front panel connectors? I don't know exactly how the CP11 works; anyway, those lines should work like the CP2A, that is, CV lines are connected to the CV line...

You may try by raising the value of the pots, or add resistors in series to them. This should lower the currents that charge (T1) / discharge (T2, T3) C1, then slowing the timings.
I am working around a clone of the 911, but at present I have no working 911 to test with.

Leonardo

I can definitely confirm that pin 10 is connected to -6; the track from pin 10 of 796 connects R36 and R37, and then continues to the collector of Q5 and to the trimmer R30. It is connected to the -6 line by way of other tracks on the components side. I have reconstructed the original pcb layout som...

davebr wrote: That was strange. My source page was correct but the HTML it generated was wrong. I have it corrected now. If you want a high resolution of those photos email me at the address on my home page. The originals are ~3600x2900 resolution. Thank you for your reply Dave. The corrected page ...

Hi Dave, thank you for your wonderful report about System 55, and also for the previous one. The information you supply are unvaluable, specially for modular cloners. I have just a question for you, if I may. I noticed that the page on the 921B shows a picture of the component side of the 921A where...

Give a look at this thread:

http://forum.moogmusic.com/viewtopic.php?f=1&t=11192

L

OK, Bernhard, please drop your e-mail address (in a private massage if you don't like to publish it) and I will send them.

L

I have collected a few photos of the 960 from the internet in the past months. They mostly show the component side and are not sufficient for redesign the PCBs exactly; maybe you already found them as well. If you think this could be of some help, I will be happy to share. Greetings from unusually s...

Hi all, and thank you very much, Carsten, for sharing data about the cabinet. I have redrawn my design so now I'm ready to complete it. It's nice to hear that someone else is bringing forth the same project. I hope some collaboration will be possible in the future. David wrote: >My feeling is that i...

Thank you dlmorley and nicholas d. kent for your replies. I know it is a lot of work. I browsed most (perhaps all) of the possible alternative options available on the web. Not that I reputed them of less value; but the 55 is a dream of a lifetime for me. In the end, I decided to try to build a repl...