JLM AUDIO

Joe,

Mea culpa- it was indeed a test-setup failure on my end. Installed it in the rack and it works flawlessly.

People, don’t be like me! Order your extender!

Thanks

Well, I’ve screwed something up then. Not getting the 5v.
If I’m reading this right, and I’m probably not, the schematic refers to IC2 for voltage drop, but I can’t see IC2 anywhere?

Is the 5v a divider someplace I can trace back?

FWW I get 2v across S2.

Ok, thanks. They looked to be parallel so I wasn’t too concerned. Guess I missed the memo on the extender… Made a small edit above- fired it on my bench with 16v supply and am able to zero meter but not getting anything in GR mode. I am feeding it balanced input from an HP200. “Get an extender” is a...

Hello, I’ve just (fingers crossed) finished building this. Excellent packaging, directions et al! One point - the BIO500T pcb has 8 holes around the optos, not matching the 4 shown on pix. One question, possibly related: into the setup and after zeroing the meter I switched to GR. Meter drops like a...