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Cabinet speakers to power supply
mightychump:
Hello, I bought a fully working mame cabinet off ebay. The reason the person sold the cabinet was because the PC was broken and the seller didn't have any computer knowledge and could not fix it.
After I bought the cabinet I swapped the old PC out and put a spare one I had in it. Everything now works perfectly (after some initial problems with the arcade monitor). The only thing I have left to do is connect the cabinet speakers to my PC Power supply. This is how the speakers were connected to the old PC's power supply-
As you can see the 2 wires were just wrapped together and sealed with electrical tape (I have already taken the electrical tape off one off the wires). The power then goes back to the amplifier as shown below-
The left wire in the photo above goes to the PC's sound card, the grey wires are the ones that go to the power supply and the top black one goes to the J-pac speaker. Below is a photo of the black wires that go to the J-pac speaker-
What I need to know is if I can do the same thing with the new Pc's power supply? Below are photos of the new PC's power supply.
Some details of the old PC's power supply-
Compaq 175w- model number- 7171-1CF1
+5V --- +3.3V --- +12V --- -12V ---
8A 12A 3A 0.3A
12.8V--- +5.05V AUX --- +3.3V AUX ---
7.5A 2.4A 1A
I don't know much about power supplies so any help would be much appreciated. Thanks
Kevin Mullins:
The first thing you need to know is if the amp was running off the 5v or 12v.
Then just tap those two wires into any available pc power supply port of the right voltage. (with a proper connector or soldered preferably though)
mightychump:
--- Quote from: Kevin Mullins on November 11, 2007, 06:13:08 pm ---The first thing you need to know is if the amp was running off the 5v or 12v.
Then just tap those two wires into any available pc power supply port of the right voltage. (with a proper connector or soldered preferably though)
--- End quote ---
I think it is connected to the 12v. The other wire that is connected to the power supply is the orange wire and that is the one that plugs into the right side of devices like cdroms or hard drives (furthest from the red line on ide cables). Is that usually the 12v wire? Thanks
mightychump:
I just had a look around the house and found a AC-DC adaptor 12v --- 150mA from an old portable tv. Would something like this be ok for powering the speakers? If so how exactly would I go about connecting the 2 grey wires from the amplifier to the AC-DC adaptor? Or would I just be better off using the psu from the PC? Thanks
Kevin Mullins:
What is the part number on the amplifier chip?
Could just look the chip and to be sure on the voltage required.
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