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Old 10th October 2004, 04:12 PM   #1
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Default The Great transformer based SE amp

Few years ago I made the amp that can be seen in the attached file. Some visitors who were used to listen to the plastic audio were satisfied with its sound. Any comments, folks?
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Old 10th October 2004, 04:31 PM   #2
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Czech humour?
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Old 10th October 2004, 04:36 PM   #3
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Seems it greatly depends who is a thread starter. Sometimes evaluated as "minimalistic simple ZEN concept", sometimes as a Czech (black) humour. Go on, please .
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Old 10th October 2004, 04:42 PM   #4
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Default Congratulation Pavel, those simple things usually sounds good!

This BU208, i remember,.... some hi voltage to TV fly Back transistor, to Black and White old television.... good Pavel.!...i like to put this to work in my club.... same volume with a 400 watts Marantz.....of course Marantz at minimum power.... operating class A because of bias... and sounds good!... sometimes we feel confusion.... not perfect because transformers, not all, normally turns the sound a little worst.

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Carlos
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Old 10th October 2004, 04:48 PM   #5
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Hi Carlos - yes, you are absolutely right. The HV TV transistor. Not easy to withstand rectified mains voltage. No power transformer was needed, only one must be a bit careful not to reverse the L and N conductors.
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Old 10th October 2004, 04:54 PM   #6
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Maybe is better use there only one transistor, best will be IRF 730 with splendid high input capacity, which make wonderful satin smooth sound .
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Old 10th October 2004, 04:59 PM   #7
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Quote:
Originally posted by Upupa Epops
Maybe is better use there only one transistor, best will be IRF 730 with splendid high input capacity, which make wonderful satin smooth sound .
You are completely right, simple = better. Unfortunately that time when I designed the amp I was not that experienced to be able to develop it with the IRF730. Maybe you could have given me a helping hand.
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Old 10th October 2004, 06:34 PM   #8
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PMA wrote:

Quote:
You are completely right, simple = better.
Et tu, Brutus?

M
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