Cheap low powered amp

AutoAudio · 16th October 2006, 06:16 PM

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, 06:50 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, 07:23 PM

Try this: http://www.geocities.com/rjm003.geo/...io/diy_gc.html

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

bikehorn · 16th October 2006, 08:16 PM

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

AutoAudio · 16th October 2006, 08:18 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

honinbou · 16th October 2006, 08:21 PM

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

16th October 2006, 06:16 PM	#1
AutoAudio diyAudio Member Join Date: Nov 2005 Location: Boston	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.

16th October 2006, 06:50 PM	#2
MaxS diyAudio Member Join Date: Mar 2006 Location: France	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 ....

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Scosche SPL meter: Cheap find with potential, or cheap junk?	theAnonymous1	Everything Else	5	11th October 2006 03:40 AM
recommend a cheap powered sub for a buddy	zuki	Subwoofers	0	6th August 2004 03:36 AM
Cheap finish for my cheap subwoofer?	mazeroth	Subwoofers	19	26th July 2004 01:47 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

16th October 2006, 07:23 PM	#3
phn diyAudio Member Join Date: Oct 2004	Try this: http://www.geocities.com/rjm003.geo/...io/diy_gc.html A 24-0-24V transformer will give you about 25W, if I'm correct.

16th October 2006, 08:16 PM	#4
bikehorn diyAudio Member Join Date: Aug 2004 Location: toronto	how about a used t-amp? that'll probably be $15 or whatever

16th October 2006, 08:18 PM	#5
AutoAudio diyAudio Member Join Date: Nov 2005 Location: Boston	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

16th October 2006, 08:21 PM	#6
honinbou diyAudio Member Join Date: Oct 2004	Class A amplifier using LM317! You could actually hard-wire the stuff together as the design is very simple.