Its been years since I did this layout so honestly I don't remember...:-/. Since the I have included the capitance multiplier components in the power section I think I used the factory schematic.
Confirmed that this layout works. I learned a few things though. For some reason, I was having trouble at first with squealing and things just not sounding quite right. I dunno if it was my resistor tolerances, but MPF102s and 2SK209s or the original 2SK184s really seem to sound best here.
As far as the one side of the dual op amp used...nothing other than having the gain op amps seemed to work. LM833 was not quite right. LM57.was a noisy turd. An old M5223 I had on hand sounded decent but settled for a JRc2904
Christ..formatting sucks. Meant to say I tried an LM358 which sounded like a noisy turd and that nothing other than high gain op amps seemed to work. Tried all the originals like 4558 and TL072 but got nothing until switching to something like the 2904
Out of interest what schematic was this one drawn from?
ReplyDeleteIts been years since I did this layout so honestly I don't remember...:-/. Since the I have included the capitance multiplier components in the power section I think I used the factory schematic.
DeleteCool, thanks Anders 👍.
DeleteNxt on my builds list.complex circuit patent by boss!
ReplyDeleteSir the 10k voltage divider res that connects to the plus of 47uf should be on the negative or pin 4 of tl072
ReplyDeleteThanks for spotting that. Moved the bottom leg to ground.
DeleteIs this verified? No matter, think I'll make an attempt!
ReplyDeleteConfirmed that this layout works. I learned a few things though. For some reason, I was having trouble at first with squealing and things just not sounding quite right. I dunno if it was my resistor tolerances, but MPF102s and 2SK209s or the original 2SK184s really seem to sound best here.
ReplyDeleteAs far as the one side of the dual op amp used...nothing other than having the gain op amps seemed to work. LM833 was not quite right. LM57.was a noisy turd. An old M5223 I had on hand sounded decent but settled for a JRc2904
Christ..formatting sucks. Meant to say I tried an LM358 which sounded like a noisy turd and that nothing other than high gain op amps seemed to work. Tried all the originals like 4558 and TL072 but got nothing until switching to something like the 2904
Delete