Search found 4 matches

by WZOLL
Wed May 09, 2018 10:53 pm
Forum: Modular Forum
Topic: 921b sync clone
Replies: 4
Views: 2892

Re: 921b sync clone

I cant find any other schematics but I believe you are correct with -6v. According to the ua796 datasheet, in the metal can pinout, pin 10 = V- and in the 14 pin dip pinout, pin 14 = V-. I can't quite tell from pictures but it appears that Moog used the metal can 796 in 921b modules. Hope this helps.
by WZOLL
Wed Apr 25, 2018 11:29 pm
Forum: Modular Forum
Topic: 921B circuit question
Replies: 2
Views: 2394

Re: 921B circuit question

The 10k trimmer appears to be the phase lock filter cutoff in the service manual by looking at the pcb traces on the 921b board. I would assume that the phase lock filter balance is the 100r which it seems to be by also looking at a picture of the board. I'm not sure how you would set them though. S...
by WZOLL
Mon Oct 30, 2017 10:33 pm
Forum: Modular Forum
Topic: 901b
Replies: 2
Views: 2620

Re: 901b

I've made one if we are talking about the same layout and it works.
901B layout.jpg
I have a few more 901a and 901b layouts in .pdf if you want them.
by WZOLL
Tue Mar 21, 2017 11:23 pm
Forum: Modular Forum
Topic: Reversible Atteunator
Replies: 0
Views: 983

Reversible Atteunator

Hello. This is my first post and I just wanted to share some info I found. I'm in the progress of building a clone Modular based on the 15 ( there are a few differences like a 901a/bb combo instead of a 921a/bb and a cp3 mixer). When building the CP15 console panel, the schematic was very blurry and...