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Chip Amps Amplifiers based on integrated circuits

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Old 11th March 2007, 05:15 PM   #1
Ron E is offline Ron E  United States
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Default Definitive Circuits

I am interested in building a chip amp. I am more interested in simplicity than great sound. Is there any consensus on what designs work best?

I think this forum could use a sticky on the various designs out there.
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Old 11th March 2007, 09:47 PM   #2
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I suggest that you consult the data sheets and ap notes. They are full of circuits designed by the guys who designed the chips. What you may think are "extra" or "unnecessary" components are there for good reason. Leave them out and you risk burning up your amp and maybe your speakers, too.

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Old 12th March 2007, 01:18 AM   #3
ttan98 is offline ttan98  Australia
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To get good sound as well as simplicity my experience is as follows:

1. Hard wire your Chipamp. The components should be a close as physically possible.

2. Use good quality components, resistors and capacitors, don't have go over the top.

3. use minimun number of components, the circuit from National data sheet is suffcient, you don't have to implement the muting part.

4. Depending on your preamp(tube or solid state), the input impedance to chip amp is important.

cheers..
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Old 12th March 2007, 02:06 AM   #4
G is offline G  United States
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Default Re: Definitive Circuits

Quote:
Originally posted by Ron E
I am interested in building a chip amp. I am more interested in simplicity than great sound. Is there any consensus on what designs work best?

I think this forum could use a sticky on the various designs out there.

You have asked a very loaded question here. You are probably going to get about 1000 different opinions now. Some of them will be rude. Some won't. If you are looking for simplicity you should probably try one of the kits that are currently available and go from there.

http://audiosector.com/

http://www.chipamp.com/
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Old 12th March 2007, 02:25 AM   #5
BWRX is offline BWRX  United States
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I'm getting very good results with this configuration:
http://www.diyaudio.com/forums/showt...71#post1108371

I'm using the LM3875 and the OPA2134 with the OPA2134 supply derived from the higher voltage rails. Sounds great in its current form. It may even sound better with a separate supply for the dual op amp.
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