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Old 15th August 2011, 08:27 AM   #1
jule is offline jule  Slovenia
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Default What happens If I use too weak output transformer?

I built 5W SE tube amp (ax84 P1)

I recycled an old tube radio - I used tubes(el84, rectifier), and both transformers.

But on the radio it said it had 4W.

The amp works fine, when I cranck it it squeals (but probably because bad wiring).

But I am worried what can happen with too weak OT? It could be that OT is more than 4W, but how could I detect the behaviour of weak OT?
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Old 15th August 2011, 10:13 AM   #2
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Quote:
Originally Posted by jule View Post
I built 5W SE tube amp (ax84 P1)

I recycled an old tube radio - I used tubes(el84, rectifier), and both transformers.

But on the radio it said it had 4W.

The amp works fine, when I cranck it it squeals (but probably because bad wiring).

But I am worried what can happen with too weak OT? It could be that OT is more than 4W, but how could I detect the behaviour of weak OT?
Dont' worry! First: I doubt if you are really getting 5W out of a class A SE EL84. Second: say you get the, it will only do this in the peaks of music reproduction, so unless you listen to full sine waves at max power you are safe.
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Old 15th August 2011, 10:15 AM   #3
jule is offline jule  Slovenia
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Then I'm ok (it is a guitar amp).
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Old 15th August 2011, 04:36 PM   #4
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Hi Jule

than you are indeed safe! Good luck playing the blues!
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