Bottlehead Forum
Bottlehead Kits => MonAmour => Topic started by: snoozzell on May 10, 2022, 04:45:36 AM
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I left the black cover off of the power transformer because I liked the look of the bell end contrasting against the rest of the black on the amp.
However, I've noticed that the power transformers are getting very hot after a couple hours of listening. I'd say a little hotter than my s.e.x. amp. I can usually hold my fingers against the s.e.x. transformer for at least 5 seconds with the monamour I really need to lift it off after 2 or 3.
I know they can handle a decent amount of heat but I wanted to check to see if the transformer cover had a functional heat sinking purpose that I'm missing by leaving it off or if it is purely cosmetic.
thanks a lot for your time and thanks for designing such a great kit these things sound absolutely incredible.
-david
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They are cosmetic. Typically PJ will design the transformers so that they won't get so hot that they burn you if you touch them, and that leaves a ton of thermal margin vs. what the transformer materials can actually cope with in terms of heat.
I'm also guessing that you don't have an Eros ;)
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They are cosmetic.
Is this true for all BH component PTs including my early version Paramounts? I never cared for the candy-apple red that the original owner/builder painted the PTs (see attached photo). If I could still use the amps with the PT covers off that will give me some time to strip the original paint and re-paint them. Thanks!
Gerry
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No, the Monamour has aluminum shrouds that cover the power transformer and those are cosmetic. The steel end covers protect the windings from damage, so I wouldn't recommend not using those.