HI Everybody.
I see an issue that is bugging me for quite a while.
When my volume is set to 0 or up to about 9 all voltages are correct. When I put volume to 10 the voltage on the plate of one power tube is lower then on the other.
V4 pin 3 - 414V
V5 pin 3 - 439V.
Tubes are biased correctly and bias current is within the limits although some small difference is there.
V4 - 39ma
V5 - 34ma.
I double checked it with different tubes - behavior is the same.
And it is only on the socket closest to preamp sockets.
Also I changed tube sockets and it did not helped.
Did anybody have similar issue?
Thanks,
Alex
JMP 50 Plate voltages mismatch
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