Hooking up amp to pc power supply?

[Sky Zero]

I got one of those Navone Amp-100's (http://www.davidnavone.com/cart.asp?24&cat=5) to power the speakers in my cabinet and could use some help in connecting them to my PC power supply.

It has a 12v power lead, 12v remote, and ground. Any idea how I could power this using a PC power supply? Should I use the PC power supply running my mame computer or a stand-alone?

Thanks for any help! This is the last part of my mame cabinet build that I need to address.

EDIT: After a bit of searching ran across this link: http://www.mameworld.info/massive/How-to/Amp_Install/amp_install.html

Following this tutorial, I was able to get power to the amp using a spare PC power supply (350w), but only if it was plugged into a motherboard. The power supply I'm using for my mame build (500w) doesn't have the power connection that my spare does. Any idea on being able to turn on a power supply without having it plugged into a motherboard?

Another idea, could I "make" a molex connector for the amp to plug into my mame build's power supply (500w)? Would it be sufficient enough to power the amp and computer? I saw on a wiki page that the yellow is 12v, red is 5v, and black is the ground. Could I jumper the the power (12v) and remote (12v) leads together, keeping the ground on its own, into a molex connection?

Sorry for all the questions and any help would be greatly appreciated!

[Kevin Mullins]

Following this tutorial, I was able to get power to the amp using a spare PC power supply (350w), but only if it was plugged into a motherboard. The power supply I'm using for my mame build (500w) doesn't have the power connection that my spare does. Any idea on being able to turn on a power supply without having it plugged into a motherboard?

Not knowing exactly what your spare power supply is..... I'm assuming you need to tie the green PS-ON wire to ground in order for it to come on. (literally connect the two)
Then it will come on as soon as AC power is applied.

http://reprap.org/bin/view/Main/PCPowerSupply

[Fordman]

Follow the pic above and you will be fine!

 

Fordman

[Sky Zero]

Thanks a ton for the help!

I got it working with the spare PC power supply. Didn't have time to wire up the speakers yet, but the amp powers on. 

I think I'll keep it separate from my mame PC's power supply and just use the spare for the amp, seems safer to me that way if anything goes wrong with it.

[Sky Zero]

Alright, got the speakers wired up and it sounds great. There is a slight buzzing noise though when nothing is playing over the speakers, something I'll troubleshoot when I get more time.

It does kinda warm in there after maybe about an hour or so and I'm attributing it to having 2 PC power supplies (one for the mame computer and one for the amp) and an amp running in my candy cab. Considering the amp I have and the mame PC power supply (500w), could I run the amp off that same power supply and eliminate having a second power supply in the cab or would you not recommend it?

Thanks again for any help!

[Kman-Sweden]

Yeah you probably could run it on the one you have for the MAME PC.

[Sky Zero]

Got a molex extension and cut off one end. Wired the 12v and ground and plugged into a molex connection on the power supply. Everything seems to be running okay.

As for the humming from the speakers, it doesn't hum when it's not plugged into the the mobo. Mobo is out of the case and mounted on wood. Read somewhere about trying to ground the power supply, mobo, and amp?

I think there might be a ground "point" on the cab (Super Neo Candy Cab) in the back. It's a metal plate with a bunch of wires hooked up to it. Would i use this to ground it?

Any help on this would be greatly appreciated!