Driving a small speaker for music

Thread Starter

LED Man

Joined Jan 15, 2008
62
Hey guys,

I have an 8ohm .2 watt speaker and I want to wire it up to play music from my computer. Can I take a headphone to headphone cable, splice up the end not connected to the computer, input it in to a breadboard, and use an amplifier to drive the speaker?

Any suggestions? thanks
 

bertus

Joined Apr 5, 2008
20,878
Hello,

You can take the line-out and put that into an LM386 amplifier (there are 1 Watt versions).
See datasheet:

Greetings,
Bertus
 

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Audioguru

Joined Dec 20, 2007
11,249
A headphones extension cord is usually not shielded. It will pickup mains hum when used to feed the high input impedance of an amplifier.
You must use shielded audio cable to feed your new amplifier.

A 0.2W speaker is tiny and will sound awful. No bass.
 

Wendy

Joined Mar 24, 2008
22,174
Just making sure what you want, to attach a home made amp to your computer output?

Seems like these things come in clusters.
 

Thread Starter

LED Man

Joined Jan 15, 2008
62
What I have now is a crappy 8ohm .2 watt speaker.

I want to be able to play my iTunes through it (I know it wont sound good).

So I guess, yeah, I want to connect the shielded audio cable from the headphones jack in to an amplifier to power this speaker.

From the info presented thus far it sounds like I was right about splicing the other end of a "shielded" audio headphone cable FROM the laptop, input the signals in to the amplifier that someone suggested and connect this speaker to the output of the amp?

Thanks
 
Yep. What I don't understand is why you want to polish a turd? It's a crappy little speaker and no matter what, it's best job is to be an annunciator for windows sound bytes...maybe you should go to a garage sale this spring and get some powered speakers for your pc, and mod/use them for iTunes.
 
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