aeolian
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Questions for all the rocket scientist's here who've played with these.
I'm reworking an 80's (I think, it has the orange stripe in the grilecloth) Deluxe Reverb to blackface.
The B+ is kind of high. I'm getting about 450V where the schematic says 415 and almost 220 where the schematic says 180. The dividers on the PS measure correctly. Is this okay? Should I change the resistors to drop the B+ in the preamp down? Add one in the first stage to get the voltage down in the output?
The 1K5 resistors to the grids were bad and the BF schematic didn't have them so I took them out. Are these necessary for the hotter PT's in the silverfaces? I am running a 5U4.
Given these higher B+ voltages, should I lower the bias? How hot is reasonable? I have low cost Russian Mesa tubes in there while I'm playing with it, but eventually want to put some NOS Phillips or some such. The EH and JJ literature say that they are better at high voltate amps than the old tubes. Any opinions?
Thanks,
I'm reworking an 80's (I think, it has the orange stripe in the grilecloth) Deluxe Reverb to blackface.
The B+ is kind of high. I'm getting about 450V where the schematic says 415 and almost 220 where the schematic says 180. The dividers on the PS measure correctly. Is this okay? Should I change the resistors to drop the B+ in the preamp down? Add one in the first stage to get the voltage down in the output?
The 1K5 resistors to the grids were bad and the BF schematic didn't have them so I took them out. Are these necessary for the hotter PT's in the silverfaces? I am running a 5U4.
Given these higher B+ voltages, should I lower the bias? How hot is reasonable? I have low cost Russian Mesa tubes in there while I'm playing with it, but eventually want to put some NOS Phillips or some such. The EH and JJ literature say that they are better at high voltate amps than the old tubes. Any opinions?
Thanks,