In Reply to: Right... posted by olddude55 on September 10, 2013 at 15:36:46:
Why are you desoldering anything to bring the amp up on a variac. No need! Just plug the amp into a variac and the variac into the wall outlet, with the dial of the variac turned all the way down of course, and slowly come up until you see the rectifier tube filament start to glow a bit. Leave it there for about a half hour, then go a quarter turn more from where you are and repeat leaving it there. Keep doing it until you are totally powered up.
The fact that you have four individual caps in place of the quad cap has nothing to do with powering up the amp. Each one of the caps on the board represents a section of the quad cap. The quad cap is four individual caps all sharing the one ground point within the can cap.
Going with one of the power supply boards offered either by Joe Curcio or Sheldon Stokes is just another way of filtering the amplifier using more capacitance and for the most part, better quality caps(but that can be suggestive).
The SS rectifier plug in is a good idea as you will get voltage to the caps sooner but I really don't think it is necessary. In fact, I would say you can just plug it in to a wall outlet and use it but as Peter said, better to be safe than sorry.
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Follow Ups
- RE: Right... - xaudiomanx 16:25:00 09/10/13 (13)
- It was down for an extended time once before after I rebuilt it. - olddude55 16:43:13 09/10/13 (11)
- A Variac is a great tool - 1973shovel 23:10:17 09/10/13 (8)
- Great! - olddude55 14:24:50 09/11/13 (7)
- Another link - 1973shovel 14:49:25 09/11/13 (6)
- And to clarify again... - olddude55 15:22:28 09/11/13 (5)
- RE: "Mullard GZ34 rectifier tube" - 1973shovel 05:18:10 09/12/13 (4)
- Good news and bad news. - olddude55 14:38:30 09/14/13 (3)
- Sounds like good news to me! - 1973shovel 13:10:28 09/15/13 (2)
- It won't play loud, but damn, does it play good. - olddude55 16:49:24 09/15/13 (1)
- RE: "Quality over quantity" - 1973shovel 17:51:09 09/16/13 (0)
- RE: It was down for an extended time once before after I rebuilt it. - petercapo 19:23:21 09/10/13 (0)
- RE: It was down for an extended time once before after I rebuilt it. - xaudiomanx 18:44:54 09/10/13 (0)
- RE: Right... - petercapo 16:35:13 09/10/13 (0)