H750, H900 and B500 is my old amplifier replaced with newer schematics. Why U asked for PCB?
Regards
Regards
I use same PCB for H900 and B500, just not stuffed step driver, but is no problem to simplify U with new original PCB for B500. I'll post here about few hours.cause i want to built it if it is alright with u .................
regards
sekhar
Regards
It's my old designs, and isn't better than Crest, QSC, Crown... Just better for DIY, and more easy to DIY.dude, you rock spreading your designs for free!
Regards
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It's my old designs, and isn't better than Crest, QSC, Crown... Just better to DIY, and easy.
Regards
better to DIY is what makes it interesting, and it also makes it easier to understand the crest's 🙂
Then this old designs still are valuable 😉better to DIY is what makes it interesting, and it also makes it easier to understand the crest's 🙂
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
regards
sekhar
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 🙂
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

2N5401 is for VI cut-out protect.
Feedback circuit is important NE5532 can be replaced with another OP amp.
Feedback circuit is important NE5532 can be replaced with another OP amp.
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? 😀
My design can give you idea for your own project, I think that I give you to much information already.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
PSU and Protect can find in my other threads.well, the PSU and protection/turn on circuit? 😀
Regards
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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