Search found 3 matches

by crustypaul
Tue Jul 10, 2012 6:09 am
Forum: PAiA Jabber
Topic: 2720-5 LFO and noise levels
Replies: 2
Views: 13703

Re: 2720-5 LFO and noise levels

Many thanks for your reply. I had assumed that the noise output should be about 0.5v to match the VCO output, but the variation in levels you get when changing noise transistor seems to be way bigger than i would expect. Is it normal to see such a massive difference in output levels just from changi...
by crustypaul
Mon Jul 02, 2012 7:47 am
Forum: PAiA Jabber
Topic: 2720-5 LFO and noise levels
Replies: 2
Views: 13703

2720-5 LFO and noise levels

I'm currently rebuilding an old Paia modular with a mixture of 4700 and 2700 modules and i'm having a bit of difficulty with the pair of 2720-5 control oscillator modules. The LFO output on both were a little hit and miss until i replaced the 2N2712 in the LFO section of each with a 2SC945 and the 2...
by crustypaul
Wed Jan 06, 2010 2:11 pm
Forum: PAiA Jabber
Topic: Quadrafuzz hum & noise issues
Replies: 1
Views: 15866

Quadrafuzz hum & noise issues

I just got hold of a quadrafuzz that was already built but not very well. There was some suspect dry joints and the 4016 switching IC had died (which i replaced with a 4066 which seems to work fine) but after fixing all that up i'm still getting some issues with hum and noise, and was wondering if a...