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Old 16th October 2006, 06:16 PM   #1
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Default 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.
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Old 16th October 2006, 06:50 PM   #2
MaxS is offline MaxS  France
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Join Date: Mar 2006
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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.
Ca marche pas ! Tu ne l' as pas branché non plus ....
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Old 16th October 2006, 07:23 PM   #3
phn is offline phn  Sweden
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Try this:

A 24-0-24V transformer will give you about 25W, if I'm correct.
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Old 16th October 2006, 08:16 PM   #4
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Location: toronto
how about a used t-amp? that'll probably be $15 or whatever
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Old 16th October 2006, 08:18 PM   #5
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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
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Old 16th October 2006, 08:21 PM   #6
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Class A amplifier using LM317!
You could actually hard-wire the stuff together as the design is very simple.
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