MAMEWorld Forums - Hardware - Re: Need a recommendation from a electrical engineer

Personally, I think a car audio amp is overkill for an arcade cabinet.
And using a PC power supply to power one seems like overkill as well.

There's lots of cheap amplifier boards that you can either power with a DC "wall wart" or by tapping power from a PC power supply molex connector. Here's a cheap amp for $8.50 on Amazon...
https://www.amazon.com/dp/B00C4MT274

Here's another...
https://www.amazon.com/dp/B010LSAO5Q

There's lots of them around if you look.

You could also rip apart a cheap pair of PC speakers and make a PC speaker hack. Here's one that I did that is powered off a USB port...
http://mame.3feetunder.com/pcspeakerhack/

For your LED driver board, just tap off the power supply in your PC. You could even hack a USB cable as long as you don't need a lot of amps.

To tap power off a molex connector, buy a cheap molex to SATA adapter like this and cut the SATA end off...
https://www.amazon.com/dp/B001UNC5ZE

If you feel like making it look fancy, you can use one of these "PCI power panel" things to bring the molex connectors outside the case through a PCI slot...
https://www.amazon.com/dp/B003L16ZOK

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