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-   Solid State (http://www.diyaudio.com/forums/solid-state/)
-   -   500W PA amplifier with Limiter (http://www.diyaudio.com/forums/solid-state/164208-500w-pa-amplifier-limiter.html)

apexaudio 1st April 2010 10:24 PM
1 Attachment(s)
Apex b500 pcb

apexaudio 2nd April 2010 10:01 AM
I am suprise there is no any comment of use OP amp in amplifier

sekhar 2nd April 2010 10:08 AM
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

powerflux 2nd April 2010 10:09 AM
Quote:
Originally Posted by apexaudio (Post 2140044)
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 :)

audiomachines 2nd April 2010 10:17 AM
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:D:D:D but to thank you for sharing us your amp:up:

apexaudio 2nd April 2010 10:18 AM
2N5401 is for VI cut-out protect.
Feedback circuit is important NE5532 can be replaced with another OP amp.

powerflux 2nd April 2010 10:26 AM
Quote:
Originally Posted by audiomachines (Post 2140053)
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:D:D:D but to thank you for sharing us your amp:up:
well, the PSU and protection/turn on circuit? :D

apexaudio 2nd April 2010 10:26 AM
Quote:
Originally Posted by sekhar (Post 2140045)
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.

apexaudio 2nd April 2010 10:33 AM
Quote:
Originally Posted by powerflux (Post 2140059)
well, the PSU and protection/turn on circuit? :D
PSU and Protect can find in my other threads.
Regards

powerflux 2nd April 2010 10:39 AM
Quote:
Originally Posted by apexaudio (Post 2140063)
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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