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Old 10th August 2005, 09:36 AM   #1
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Question Have a look at this schematic please

I bought an amp at ebay for a few euros. First listening was quite impressive. After replacing the quite poor elytic input caps by 1 uF Wima MKPs it became a lot better. As it seems to be well made (coming with a heavy toroidal transformer and Toshiba 2SA1943 / 2SC5200) i ask for some tweaking suggestions. I was told that there may be circuit parts for CE compliance that may be omitted, but due to my poor knowledge i would like to have someone qualified to look at it.

Hope I´m not boring you with this ...

Thanks so far !

http://www.produktinfo.conrad.com/da...ufe_KD_269.pdf
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Old 10th August 2005, 09:51 AM   #2
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V232 (C2383) with no emitter resistor?
strange..
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Old 10th August 2005, 09:53 AM   #3
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Errh ... Means what ? Seems I have to get some basic knowledge ...
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Old 10th August 2005, 10:37 AM   #4
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Sorry, just a thought, wrong by the way. R278 (100ohm) acts basically the same as emitter resistor.
I don't see anything around CE stage to be omitted. If one thought about (diamond) buffer between LTP and CE stage-than NO, it must be there, otherwise parameters will degrade tragically.
regards
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Old 10th August 2005, 01:08 PM   #5
dimitri is offline dimitri  United States
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Quote:
some tweaking suggestions
please leave it alone, the amp is pretty balanced design
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Old 10th August 2005, 01:19 PM   #6
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Impressive, even for 149 Euro at Conrad's.
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Old 10th August 2005, 04:25 PM   #7
ilimzn is offline ilimzn  Croatia
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A little bit od that the NFB is taken out of the driver stage, I can't see this making any positive difference...
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