Recent content by amptweaker

Screen Voltage I noticed the unused tap at R25 and R26 too. Never know what kind of whackyness you'll find in a Crate. Took a look at the screen grid while driving it hard and it does turn cherry red...

Speaker for V5 I'm doing a lot of testing on my V5 before I start to mod. One of the first things I did was to measure and then calculate the impedence of the output transformer. It's about 3K at 8 ohms. I thought this was a bit low, and checked the data on the EL84. A look at the Rodenhuis...

Speaker for V5 I'm doing alot of testing before i mod my V5. This amp would match better with a 16 ohm speaker. Look for other posts here on fretnet on the V5 for a better understanding of why I think this.

white noise I would suspect that tantalum as your noise source. I wouldn't worry too much about the high screen voltages as long as you use the stock Sovtek. These tubes look identical to the 6P14P and folks are using theme as 7189 subs. Besides, the 300 volts is a design center value for the 6BQ5.

white noise I would suspect that tantalum as your noise source. I wouldn't worry too much about the high screen voltages as long as you use the stock Sovtek. These tubes look identical to the 6P14P and folks are using theme as 7189 subs. Besides, the 300 volts is a design center value for the 6BQ5.