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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: You may be overloading the transformer. posted by Al Sekela on January 15, 2008 at 15:08:53:
The PT does not seem to run abnormally hot and it takes a while for it to get hot. The OTs get a little warm themselves, but a good bit of the heat comes from the KT-88s which are close to the PT and OTs. After a couple hours of use the PT is only hot enough that you 'almost' can't keep your hand on it.
My Fluke meter says I'm at 119.1 volts AC at the wall receptacle.
The amp is self biasing, but does have a 1/4" jack to check it through. I should wire up a plug and see where its actually at. Doesn't seem to be too high since there's no faint redness on the plates
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Follow Ups
- RE: You may be overloading the transformer. - lektrik 17:31:20 01/15/08 (6)
- KT88s draw more filament current than EL34s. - Al Sekela 10:57:30 01/17/08 (5)
- More info...... - lektrik 20:44:24 01/17/08 (4)
- Confirms that it is the tube bias... - Al Sekela 12:41:11 01/18/08 (3)
- More info, again............ - lektrik 10:22:01 01/19/08 (2)
- Checked the bias......... - lektrik 16:19:21 01/19/08 (1)
- OK for the tubes, perhaps too much for the power transformer. - Al Sekela 12:01:05 01/20/08 (0)