500W PA amplifier with Limiter

apexaudio · 31st March 2010, 12:51 PM

B500 based on schematics of H900, but in AB class.
Power supply +/-90Vmax.

sekhar · 31st March 2010, 01:46 PM

is this a working circuit ....................... have any pcbs..........

regards
sekhar

apexaudio · 31st March 2010, 04:35 PM

H750, H900 and B500 is my old amplifier replaced with newer schematics. Why U asked for PCB?
Regards

sekhar · 31st March 2010, 06:41 PM

cause i want to built it if it is alright with u .................

regards
sekhar

apexaudio · 31st March 2010, 06:53 PM

Quote:

Originally Posted by sekhar

cause i want to built it if it is alright with u .................

regards
sekhar

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.
Regards

powerflux · 31st March 2010, 07:12 PM

dude, you rock spreading your designs for free!

apexaudio · 07:40 PM

Quote:

Originally Posted by powerflux

dude, you rock spreading your designs for free!

It's my old designs, and isn't better than Crest, QSC, Crown... Just better for DIY, and more easy to DIY.
Regards

apexaudio · 31st March 2010, 07:34 PM

If was no mistakes...
PCB size: 220x52,5mm

powerflux · 31st March 2010, 07:38 PM

Quote:

Originally Posted by apexaudio

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

apexaudio · 31st March 2010, 07:48 PM

Quote:

Originally Posted by powerflux

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

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31st March 2010, 01:46 PM	#2
sekhar diyAudio Member Join Date: Jul 2009 Location: West bengal/siliguri	is this a working circuit ....................... have any pcbs.......... regards sekhar

31st March 2010, 04:35 PM	#3
apexaudio diyAudio Member Join Date: Feb 2010 Location: Serbia	H750, H900 and B500 is my old amplifier replaced with newer schematics. Why U asked for PCB? Regards

31st March 2010, 06:41 PM	#4
sekhar diyAudio Member Join Date: Jul 2009 Location: West bengal/siliguri	cause i want to built it if it is alright with u ................. regards sekhar

31st March 2010, 07:12 PM	#6
powerflux diyAudio Member Join Date: Apr 2008	dude, you rock spreading your designs for free!

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