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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: another pic posted by frankford on March 5, 2012 at 17:22:57:
Got the new power tranny in this week, finished installing it last night. I first setup the 6550 heaters per picture in manual. Only 3.2 vac at the heaters of the 6550's. Went back and setup the heaters per schematic and I am now getting 6.25vac across both heaters with the tubes installed.
Here is the kicker, I hooked up the amp to a pair of speakers, only one side was working. However I let it play for over an hour to see if the original motor boating would happen. Nothing. Went to bed at 5 am this moring.
This afternoon I put a new 12ax7 on the side that wasn't working. I turned on the amp and the channel that was working last night started motor boating on me. I opened the amp back up and turned it on with 8 ohm resisters on the speaker term, I measured 6.25 vac on the 6550's.
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Follow Ups
- Update on amp - frankford 15:05:07 04/07/12 (1)
- I'm done with it. - frankford 17:11:54 04/07/12 (0)
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