Simple amp for a complete newbie

Shardik · 2nd July 2008, 08:42 PM

Hi folks!
I recently bought two very cheap speakers that i would like to hook up with my computer. Commercial amplifiers are a bit too expensive, so i wonder if it is possible to construct one myself. The only things i really need are a volume control, two RCA or one trs jack, and some kind of connector for the speakers.
(Correct me if im wrong)
It would be nice if someone could give me instructions for this.

These are the specifications from the back side of the speakers:

Impedance: 4 ohm
Max continous power handling capacity: 20 W
Max music handling: 30 W
Sensitivity: 1,2 W

jaycee · 2nd July 2008, 08:49 PM

If you want cheap and simple, go with a chip amp of some kind.

Two LM1875 chips would be ideal.

tschrama · 2nd July 2008, 08:53 PM

I think you are should be looking for a chip-amp

be even then, you can get a NAD3020 for 150 dollar: ..DIY is fun, but not cheaper...

YFW · 3rd July 2008, 06:05 AM

LM675T,a very good choice for the beginners.

Shardik · 4th July 2008, 12:53 AM

It was a cheaper solution i was looking for, so i'll just buy one then. Thanks for the advice anyway

2nd July 2008, 08:42 PM	#1
Shardik diyAudio Member Join Date: Jul 2008	Simple amp for a complete newbie Hi folks! I recently bought two very cheap speakers that i would like to hook up with my computer. Commercial amplifiers are a bit too expensive, so i wonder if it is possible to construct one myself. The only things i really need are a volume control, two RCA or one trs jack, and some kind of connector for the speakers. (Correct me if im wrong) It would be nice if someone could give me instructions for this. These are the specifications from the back side of the speakers: Impedance: 4 ohm Max continous power handling capacity: 20 W Max music handling: 30 W Sensitivity: 1,2 W

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2nd July 2008, 08:49 PM	#2
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	If you want cheap and simple, go with a chip amp of some kind. Two LM1875 chips would be ideal.

2nd July 2008, 08:53 PM	#3
tschrama diyAudio Member Join Date: Jul 2001 Location: The Netherlands	I think you are should be looking for a chip-amp be even then, you can get a NAD3020 for 150 dollar: ..DIY is fun, but not cheaper...

3rd July 2008, 06:05 AM	#4
YFW Account Disabled Join Date: Jun 2007	LM675T,a very good choice for the beginners.

4th July 2008, 12:53 AM	#5
Shardik diyAudio Member Join Date: Jul 2008	It was a cheaper solution i was looking for, so i'll just buy one then. Thanks for the advice anyway

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