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Any thoughts on this method to power a car stereo? Answered

OK, I've seen several posts of using computer power supplies and 12V wall adapters to power car stereos.  I was about to recycle an old portable cd player when I noticed that the power rating was 12V.  I haven't cracked it open yet to see how the power supply is wired, but could the power supply from this stereo be used to power a car stereo? 

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AlphaNomad
AlphaNomad

4 years ago

I agree with Toga_Dan, but in my experience you should be ok. Your going to want the correct amperage to get the speakers working well for sure.

Also make sure both are DC. I once put 12V AC into a DC componet :(

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RicoSPD
RicoSPD

Reply 4 years ago

it's alive. I hooked it up to a speaker from a surround sound system we haven't been using. Now to design a box for it all.

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Downunder35m
Downunder35m

Reply 4 years ago

Don't forget to take enough pics and notes - makes it soo much easier to give us a nice Instructable back ;)
And who knows you might even get something back in return!

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RicoSPD
RicoSPD

Reply 4 years ago

Thanks, I didn't want to hook it up only to find out I put too much power to the stereo. (Since the 12V rated power supply gave me 14V with the multimeter). I have a 250W power supply from an old desktop PC but I was hoping to use the switched power supply from the external hard drive kit since it's so much smaller and doesn't have a fan.

I'm still putting the pieces together. I still need to find speakers, the stereo's output is rated at 50W x 4, although the more I read it sounds like its more like 22W per speaker?

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RicoSPD
RicoSPD

Reply 4 years ago

After looking at some other instructables on here, I started looking at the PC power supply version. I happened to look at an old Mad Dog Mega-Vault external hard drive kit (powered aluminum case to turn your HDD into an external drive). The power brick is a Leadman Electronic POWMAX KY-05036S-12. Output is +12V/2A and +5V/2A. The board to attach the hard drive is intact with the power switch and the board has the 4 wire molex connector on it. I hooked up my multimeter and the +12V leads read 14.8V. Will this work for my application?

The HU I'm using is a "BOSS 612UA" digital receiver (AM/FM/USB/SD = no CD player). It had two +12V wires, one for constant (that I had wired to the 'powered antenna' lead on my VIbe's harness) and +12V Switched. I'm assuming the +12V switched would be used along with the ground. The +12V constant would be for the HU's memory.