Ty_Bower wrote:Your meter is just getting confused trying to measure AC with the DC bias on top of the signal. All your voltages look just fine except for one. Can you double check the voltage at pin 3 of V4? That is the plate voltage for the output tube, and you are showing only 52.3 volts DC. That should be over 300 volts DC.
separks wrote:And a couple of nice big interior pix can help, too, which really helps us spot wiring errors. If you can't up them to Flickr, by all means email them directly to me and I'll post them.
Shannon
separks wrote:Thanks, ficklecycler for the voltages and pic. The voltages look good.
1) Did you do a phase cancellation test? Just listen to one channel at a time, or swap one of the speaker connections.
2) Check your RCA input connectors. Use your DMM to be sure that the center posts go to J1-1 and J2-1 respectively.
3) Make sure R9 and R10 are 475K. You can measure them with the amp off with your DMM. Also double check that C1 and C2 are .22uF (though they look it).
Shannon
ficklecycler wrote:I did do a phase cancellation test. Everything seems fine there.
Used the DMM and double checked the RCA's. No problems there either.
R9 and R10 are the correct values, as are C1 and C2
Just a side question. How would switching to a 3 or 3.5k transformer change the sound signature compared to the current 5k?
EWBrown, my bold type isn't yelling at you FYI
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