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Old 1st April 2010, 10:24 PM   #11
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Apex b500 pcb
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Old 2nd April 2010, 10:01 AM   #12
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I am suprise there is no any comment of use OP amp in amplifier
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Old 2nd April 2010, 10:08 AM   #13
sekhar is offline sekhar  India
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sir i very much interested in making this amp looking at its apparent simple design can u plz forward the construction details my email address ardhendu.san@gmail.com ........... if u have any pics of the amp it would be very helpfull and how r the sonics??


regards
sekhar
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Old 2nd April 2010, 10:09 AM   #14
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Originally Posted by apexaudio View Post
I am suprise there is no any comment of use OP amp in amplifier
why? i can't see anything wrong with it.. 5532 is pretty standard in PA.
i just wonder what the 2n5401 at the output is for
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Old 2nd April 2010, 10:17 AM   #15
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well it is a pro p.a amp. simple, working, lots of power, you provided all the details even the pcb layout, what more can we ask but to thank you for sharing us your amp
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Old 2nd April 2010, 10:18 AM   #16
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2N5401 is for VI cut-out protect.
Feedback circuit is important NE5532 can be replaced with another OP amp.
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Old 2nd April 2010, 10:26 AM   #17
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Originally Posted by audiomachines View Post
well it is a pro p.a amp. simple, working, lots of power, you provided all the details even the pcb layout, what more can we ask but to thank you for sharing us your amp
well, the PSU and protection/turn on circuit?
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Old 2nd April 2010, 10:26 AM   #18
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Originally Posted by sekhar View Post
sir i very much interested in making this amp looking at its apparent simple design can u plz forward the construction details my email address ardhendu.san@gmail.com ........... if u have any pics of the amp it would be very helpfull and how r the sonics??


regards
sekhar
My design can give you idea for your own project, I think that I give you to much information already.
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Old 2nd April 2010, 10:33 AM   #19
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well, the PSU and protection/turn on circuit?
PSU and Protect can find in my other threads.
Regards
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Old 2nd April 2010, 10:39 AM   #20
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PSU and Protect can find in my other threads.
Regards
i thought the H900 protection was suitable, but thanks for the confirmation
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