Output wire size?

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JDUBS

Output wire size?
« on: 20 Jul 2007, 11:14 pm »
Guys

Finally finishing up the Teac tripath amp I've had for a looong time (always with intentions to mod it :oops:).

Anyway, I was planning on using some Bolder Nitro cable I have on hand, but the gauge is just too thick for where I'm soldering to (on the amp board itself).  No problem with the speaker terminals.

I've got some Mundorf silver/gold wire that's 24 AWG.  Seems a little thin...but we're not talking big power delivery (30 watts / channel max).

Think I'm ok using it? 

On a separate note, what's the consensus on twisting the + and the - together?  Its a short run of maybe 3 inches.

Thanks!!
Jim


mgalusha

Re: Output wire size?
« Reply #1 on: 21 Jul 2007, 02:52 am »
24GA is pretty small for driving a speaker. While it will work you might try doubling up the wires, 2 for the + and 2 for the -, this will give you ~21GA. If you have enough and can get three or four pieces in the hole even even better. There isn't much resistance in 3" of wire but no sense in restricting current flow if you can avoid it.

Twisting the + and - together will make the a little less sensitive to radiated noise, which there is plenty of with and Class D amp, I'd twist them myself.

mike

JDUBS

Re: Output wire size?
« Reply #2 on: 21 Jul 2007, 05:18 am »
Thanks Mike!  Exactly what I needed.   :thumb:

-Jim

art

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Only 30W, eh?
« Reply #3 on: 24 Jul 2007, 07:02 pm »
Let's see..........that is around 2 A continuous, at max power.......so using 700 circular mils/amp......that gives us 1400 circular mils needed.

You would need 18 ga. minimum to meet that goal. 2 24 gauge will get you to 21 ga......doubling that will get you to 18 ga.

(Doubling wires moves you up 3 gauges.)

I would shoot for 1000 circular mils per amp, in which case you need 17 gauge. 5 24 ga. will do it.

Pat