chipamp pcb?

[vectorplane]

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.

Cheers

[coldfuzion76]

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.

[vectorplane]

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?

[coldfuzion76]

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.