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Old 1st August 2002, 05:45 PM   #1
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Default Any opinions on this amp?

I'm new to the world of amps using "three legged fuses" or solid state devices (I'm currently into tubes). But I recently ran across an interesting amp design on the 'net at:

http://home.no.net/andiha/articles/audio/powamp.htm

Anyone care to enlighten me if this might be a good project to tackle?

Thanks to all,
Steve
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Old 1st August 2002, 06:37 PM   #2
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Nothing wrong with it, a fairly conventional design, should
work just fine.
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Old 1st August 2002, 06:59 PM   #3
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If you are interested, i recomend you read AN-211 (from analog devices) (The Alexander Current-Feedback Audio Power Amplifier).
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Old 2nd August 2002, 08:21 AM   #4
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I don't recommend any current-feedback amps. Have lots experience with them, and we did not care for the results. Ditto for using them as I/V stages.

Jocko
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Old 2nd August 2002, 08:38 AM   #5
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Default Now that I've looked at the schematic.....

I'll second Nelson's opinion. Only thing different than 99% of the other amps out there is the input stage. Oh.......the feedback goes into a low impedance point. Not what I think of when someone mentions "current-feedback". Yeah, I know Harry.......you do.

Jocko
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Old 2nd August 2002, 12:52 PM   #6
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Take a look at the sch. from Velleman kits.
Something wird about the feedback loop around IC7. Looks like current and voltage feedback combination.
What you think?


http://www.velleman-kit.com/Download...nual_K4020.pdf
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Old 2nd August 2002, 01:41 PM   #7
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Another current feedback amp sch. Take a look.
http://lynx-audio.narod.ru/prin/us_m2/ris1.pdf
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