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AutoAudio 16th October 2006 07:16 PM

Cheap low powered amp
I'm sure this topic has been addressed multiple times, but in my searches I didn't really find anything that helped me out. I've done diy speakers before, but never an amp so I'm pretty clueless. I'm building some crib speakers for my baby and only need about 10 to 15 watts x 2. I can buy a t amp that'll work for 30 bucks, but if I could build one for less... that would be swell. Thanks guys.

MaxS 16th October 2006 07:50 PM

You can reduce the cost by use old amp or TV by using some transfos / capacitors. For the chips, you can use LM 1875 or TDA 2030.

phn 16th October 2006 08:23 PM

Try this:

A 24-0-24V transformer will give you about 25W, if I'm correct.

bikehorn 16th October 2006 09:16 PM

how about a used t-amp? that'll probably be $15 or whatever

AutoAudio 16th October 2006 09:18 PM

You know somebody selling one? The SAF on this is pretty low so I'm trying to keep it pretty cheap. A baby needs decent sound too... those crummy one speaker jobs they put in their toys with limited music options. pfff

happycat 16th October 2006 09:21 PM

Class A amplifier using LM317!
You could actually hard-wire the stuff together as the design is very simple.

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