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Chip Amps Amplifiers based on integrated circuits

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Old 31st March 2008, 07:07 PM   #11
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Originally posted by CJ900RR

Sorry, my bad. I should have written "servo circuit" witch is the correct name for it. Instead of using cap's to minimize DC-offset, you can use OP-amps to keep it low.
Oh, a servo circuit. I see

I know about the National paper on using multiple chips, but this is a single-chip amp.

I've bought boards from Peter Daniel, and Chip-Amp before, but I don't know if they have this "servo amp" on them.

I'll have to check when I get home.
I'll have to check to see if they have the Zobel as well.

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Old 31st March 2008, 08:45 PM   #12
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I have both now, and they don't include the servo, but they do have the zobel. I bought 6 of BrianGT's boards to use in my amp, and I have a quick question, Would I want to use the zobel on every board or just connect one single one after the resistors on the output? I'm going to use 3 per channel.
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Old 31st March 2008, 09:15 PM   #13
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Sorry to be an idiot.
Help me understand this:

If you parallel 3 amps per channel, is it because you want to drive loads lower than 4 ohms?
Or you just want a wider margin of safety?

Or do the chip amps have better THD performance if you keep each one working at a lower current level?
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Old 31st March 2008, 10:00 PM   #14
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My reasoning it just for more power. I'm driving a larger set of speakers, and from what I've seen of them so far, I'm gonna need the juice. Basically I'm trying to build the pa100 diagram, just with 3 instead of 2.
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