Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Bieworm on October 07, 2020, 09:27:05 am
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Anybody happen to have the reference voltages of the B+ nodes and plate voltages?
Even better would be those voltages of the tone king imperial, which I'm about to build.
Thanks
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Here are my voltages...
http://sluckeyamps.com/tdr/tdr.pdf
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Wich DR ? Vintage, modern ? There are all close
All voltages;
Scroll down a bit :
https://robrobinette.com/How_The_AB763_Deluxe_Reverb_Works.htm
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Thanks guys!
Steve, I noticed you have 5 filter caps lined up in the power rail. The imperial has 4. Does a regular DR have 5 of em too or did you add one? Better filtering maybe?
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Steve, I noticed you have 5 filter caps lined up in the power rail. The imperial has 4. Does a regular DR have 5 of em too or did you add one? Better filtering maybe?
The original DR has 5 caps too. The first two caps are connected parallel and function as a single cap, so there are really only four B+ nodes. Perhaps the imperial uses a larger single cap to replace the two parallel caps at the first node?
Can you post a schematic for the imperial?
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No, it's 4x 22uf450V caps.
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OK, I remember seeing that schematic recently. But what has the imperial got to do with voltages on a Deluxe Reverb? The only similarities is each amp has tubes and knobs. :icon_biggrin:
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OK, I remember seeing that schematic recently. But what has the imperial got to do with voltages on a Deluxe Reverb? The only similarities is each amp has tubes and knobs. :icon_biggrin:
You're right. But the imperial is supposed to be based on the DR. Do that's my only reference. If anyone could hand me over the imperial 's voltages I'd be very grateful. 😁
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But the imperial is supposed to be based on the DR.
Whoever has that opinion has never compared the schematics of the two amps.
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But the imperial is supposed to be based on the DR.
Whoever has that opinion has never compared the schematics of the two amps.
Ah crap...I bought all the components. I assumed the DR power TX and OTX...I guess.. we' ll see then?
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DR iron will work well for this project. You may have to get creative to power the relays.
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I have a seperate 240VAC to 6VAC transformer for that. It's 6V power kit. The relays is a kit too. A double switching kit. 6V. For the reverb alignment with each channel I have to add an extra parallel relay to switch the reverb simultaneously with the channel switching. The 2nd relay is for the tremolo
The resistors are mostly Dales. And the caps are RS. Filter caps are F&T. Electrolytics are vishay. For tubes I chose all to be EHX.
Chassis is a blank. So I can put the components where I choose.. maybe you can help me out on that one..
PTX is classictone, OTX hammond 1750H, choke Hammond 194A, reverb tx is generic.
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.... the imperial is supposed to be based on the DR....
Samurai 7 is supposed to be based on Seven Samurai. OK, rice farmers with sharp sticks, but more different than the same. ("7" doesn't even have a tomato rating.)
https://en.wikipedia.org/wiki/Samurai_7
https://en.wikipedia.org/wiki/Seven_Samurai
Why do you need voltages? Do you have any voltages? Voltage trends can be compared to Fenders of similar tube and resistor values. Exact voltages are not very important. You have knobs.
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.... the imperial is supposed to be based on the DR....
Samurai 7 is supposed to be based on Seven Samurai. OK, rice farmers with sharp sticks, but more different than the same. ("7" doesn't even have a tomato rating.)
https://en.wikipedia.org/wiki/Samurai_7
https://en.wikipedia.org/wiki/Seven_Samurai
Why do you need voltages? Do you have any voltages? Voltage trends can be compared to Fenders of similar tube and resistor values. Exact voltages are not very important. You have knobs.
Bullseye!!! The challenge is really exciting me in a good way. I'll let my ears decide. The right speaker is also really important. I have a few in mind.. 1028k , g12h30 , g12 classic lead 80 .. I'm biased towards a 2x12 with the g12h30 and the classic lead in a combo..