Getting ready for my first D style build. Trying to decide on a PT for a quad of 6L6. Should I be aiming for 400-450v on the plates?
My choices include a Bugera PT with 380-0 (no CT) unloaded. With full-wave bridge rectifier, and subtracting 10% for load, I'll get around 480v on the plates. Correct?
I have a monster Fender Tone Master PT with 175-0-175 HT. With full-wave, I think I'll see 490ish?
Finally, I have a Hammond 272JX, 300-0-300, making...wait, 840v?!? OK, all I've figured out is I don't know how to do this. I thought Hammond's doc would help: http://www.hammondmfg.com/pdf/5c007.pdf
Choosing a PT
Moderators: pompeiisneaks, Colossal
Choosing a PT
I build and repair tube amps. http://amps.monkeymatic.com
Re: Choosing a PT
Why reinvent the wheel here, stare and compare at what was used in the actual amps mostly ....a Twin Reverb PT. If you need a standup mount, find one with similar specs as the Twin Reverb.xtian wrote:Getting ready for my first D style build. Trying to decide on a PT for a quad of 6L6. Should I be aiming for 400-450v on the plates?
My choices include a Bugera PT with 380-0 (no CT) unloaded. With full-wave bridge rectifier, and subtracting 10% for load, I'll get around 480v on the plates. Correct?
I have a monster Fender Tone Master PT with 175-0-175 HT. With full-wave, I think I'll see 490ish?
Finally, I have a Hammond 272JX, 300-0-300, making...wait, 840v?!? OK, all I've figured out is I don't know how to do this. I thought Hammond's doc would help: http://www.hammondmfg.com/pdf/5c007.pdf
TM
-
groovtubin
- Posts: 1114
- Joined: Tue Feb 07, 2006 4:52 am
Re: Choosing a PT
Man i LOVE your thought process.....! Have fun mike!ToneMerc wrote:Why reinvent the wheel here, stare and compare at what was used in the actual amps mostly ....a Twin Reverb PT. If you need a standup mount, find one with similar specs as the Twin Reverb.xtian wrote:Getting ready for my first D style build. Trying to decide on a PT for a quad of 6L6. Should I be aiming for 400-450v on the plates?
My choices include a Bugera PT with 380-0 (no CT) unloaded. With full-wave bridge rectifier, and subtracting 10% for load, I'll get around 480v on the plates. Correct?
I have a monster Fender Tone Master PT with 175-0-175 HT. With full-wave, I think I'll see 490ish?
Finally, I have a Hammond 272JX, 300-0-300, making...wait, 840v?!? OK, all I've figured out is I don't know how to do this. I thought Hammond's doc would help: http://www.hammondmfg.com/pdf/5c007.pdf
TM
jim
Re: Choosing a PT
Jim when it comes to Dumble, I believe in the fine art of stare and compare. I've come full circle with him; would like to have another conversation with him, only this time calling him an evil geniusgroovtubin wrote:Man i LOVE your thought process.....! Have fun mike!ToneMerc wrote:Why reinvent the wheel here, stare and compare at what was used in the actual amps mostly ....a Twin Reverb PT. If you need a standup mount, find one with similar specs as the Twin Reverb.xtian wrote:Getting ready for my first D style build. Trying to decide on a PT for a quad of 6L6. Should I be aiming for 400-450v on the plates?
My choices include a Bugera PT with 380-0 (no CT) unloaded. With full-wave bridge rectifier, and subtracting 10% for load, I'll get around 480v on the plates. Correct?
I have a monster Fender Tone Master PT with 175-0-175 HT. With full-wave, I think I'll see 490ish?
Finally, I have a Hammond 272JX, 300-0-300, making...wait, 840v?!? OK, all I've figured out is I don't know how to do this. I thought Hammond's doc would help: http://www.hammondmfg.com/pdf/5c007.pdf
TM
jim
Mike
Re: Choosing a PT
second what Mike said.
It sounds like you have those PT on hand and I understand the desire to use them. Getting the amp to sound right is all about tweaking the voltages, best to start with a PT that is known to work..............
It sounds like you have those PT on hand and I understand the desire to use them. Getting the amp to sound right is all about tweaking the voltages, best to start with a PT that is known to work..............
Eric
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440