I have a pair of 8 Ohm speakers that I want to use to play sound from laptop, is this possible?
I tried taking an old pair of headphones, cutting the cord, and intertwining the wire with the stereo wires.
This way, I would just plug in the speakers like a pair of headphones, and I would get the sound from their.
The project failed dismally. What would I need to use these speakers with my laptop, or perhaps my mono television?
Of course it did. You see, because headphones fit so close to your ear (or inside your outer ear if dealing with earbuds), they need very little power to effectively operate them. Two watts is about the maximum power output you will find with a headphone jack. Most are far below that and some are even as low as 10 miliwatts.
So when you spliced your headphone wires with your speakers and plugged it into you headphone jack, all you did was connect your speakers to an extremely low power source. Such low power will not run a standard speaker. This is why computer speakers have built-in amplifiers.
In order to use your speakers, you will need to amplify the signal before it will drive the speakers.
Here is an amazing little amplifier that would work perfectly with your speakers.
This amp is compact and amplifies with amazing clarity considering its low cost. Your speakers would sound their best with this little gizmo.
And if you feel froggy, you can even figure out a clever way of mounting this amp to your speakers to give you a custom computer/MP3 speaker project.
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