Hi All Long time MP4 lover here.. turned it on today after a couple of months storage and it's virtually silent, till I crank the headphones loud and then.... when I play keys, I can hear at very low level noise like the "gate" opening. The VCA envelope controls shape the envelope of this low level noise. If I twiddle the filter resonance, I can hear the noisy pot, but no actual filter resonance. If I twiddle the filter cutoff I hear nothing, it doesn't filter the noise. I can tell the VCO's are receiving trigger because their LED's light up. *** SO *** looking a the block diagram, I guess I either have a problem in the "mixer" (post VCO's pre VCF) or in the VCF itself??? Does anyone have an opinion on this?? Any suggestions graciously accepted,,,,,, peace & sine waves Simon p.s. I never even knew there was an MP4 group....
Message
new member - suddenly silent / hissy MP4....
2008-12-08 by simezagreb
Attachments
- No local attachments were found for this message.