BR100 Design Correct?

Cadaver · 19th February 2006, 07:55 PM

Hi, I'm pretty new to this stuff. I've been looking at building an GC for awhile now. I'd like to get 100w per channel and i need to drive some 8 ohm speakers, so i figured that the best design for this would be the BR100 presented in AN-1192. Attached is what I think is the correct design for this. It would be greatly appreciated of you guys could look over the schematic.

Additionally I have a few questions.

Capacitors C1, C3, and C5 are all filter caps, is it necessary to include these and what values should they be?

I was planning on using the regulated supply on http://myweb.tiscali.co.uk/nuukspot/...ainclone6.html
Would this supply be enough for 2 100w channels and what is a safe VA for the transformer to handle this load?

Thank you all for your help!

Cadaver · 20th February 2006, 07:24 PM

WOW, this is the best amp design ever!.....(probably not, but it could be, i really don't know)

A little help would be nice.. I personaly would prefer not to blow things up while making this...

jaudio · 20th February 2006, 09:52 PM

It looks fine other than the mute resistor,increase it to 5k to 10k.

I would add a buffer.

If your speaker dont drop way below 8ohms,you might want to increase the supply voltage a bit.

The fun is in the tweaking

traw · 20th July 2007, 06:22 PM

quick question i've always wondered.... could the input network be simplified? that is what happens if used 4.7uf followed by 47k to ground, tap there goes to + of non-inverting half, 4.7k resistor on to the - of the inverting half.... any failings with that?

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20th February 2006, 07:24 PM	#2
Cadaver diyAudio Member Join Date: Feb 2006 Location: MO	WOW, this is the best amp design ever!.....(probably not, but it could be, i really don't know) A little help would be nice.. I personaly would prefer not to blow things up while making this...

20th February 2006, 09:52 PM	#3
jaudio diyAudio Member Join Date: Oct 2004	It looks fine other than the mute resistor,increase it to 5k to 10k. I would add a buffer. If your speaker dont drop way below 8ohms,you might want to increase the supply voltage a bit. The fun is in the tweaking

20th July 2007, 06:22 PM	#4
traw diyAudio Member Join Date: Sep 2005	quick question i've always wondered.... could the input network be simplified? that is what happens if used 4.7uf followed by 47k to ground, tap there goes to + of non-inverting half, 4.7k resistor on to the - of the inverting half.... any failings with that?

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