Actually LFO

OK, I think I’ve finished this Music from Outer Space LFO. I got some new PCBs in the mail today, including the corrected version of my auxiliary circuit board that contains the sync mod as well as the power header. The first version had the inputs to the op amp reversed, so the sync mod […]

Almost LFO

I changed the PW and PWM CV pots on the MFOS VC LFO from 100k to 25k, the fixed resistors on the PW pot from 100k to 22k, and the mixing resistors from 10k to 200k. Everything seems to work and changing the PWM attenuator (with no CV plugged in) doesn’t change the pulse width […]

MFOS VC LFO SNAFU?

I swear, pulse width control is going to be the death of me. Hard to believe but it looks like there’s a rather serious design flaw in Ray Wilson’s Music from Outer Space Voltage Controlled Low Frequency Oscillator (or, as its friends call it, MFOS VC LFO). With no pulse width CV plugged in, changing […]

Living in sync

A little while ago this LFO mod came to my attention: That caught my interest, since I’d just ordered a PCB for the Music from Outer Space Voltage Controlled LFO, which has a lot going for it, but not sync. Sync is useful if, for instance, you want to create a vibrato-like variation in pitch […]

Mail call

Compensating for a crapload of 0805 SMD in my future with a couple big fat vactrols just for giggles, because I’ve never played with vactrols before.