Museum of the Game® & International Arcade Museum® Forums

As some of you may know, I am in the process of converting my Rush 2049 cabinets into full on racing emulation machines using the original hardware.

I have a thread on that here if anyone is interested - https://forums.arcade-museum.com/th...to-emulation-racing-machines-work-log.554376/.

I am running into an issue right now with having some interference in the speakers however.

I have all 5 speakers hooked up and connected and it's all working, but as mentioned, it's got some interference and I'm trying to figure out how to rid of it.

I am using a 24v Mean Well power supply ( https://www.amazon.com/dp/B013ETVO12 ) to power the 2 amps( https://www.amazon.com/dp/B0DCN8472L ) for the speakers, as well as the FFB motor.

I have another ATX PSU that is powering the PC and that ATX PSU also powers the UFFB (which is the interface board between the PC and the arcade parts) via the USB plug, on 5v. I also have a 4 pin molex connector from the ATX PSU going into the UFFB to pass through the 12v to power the lamps on the cabinet.

Now I have removed a lot of this from the circuitry to try and track down the cause of the interference, but I am still getting it with minimal stuff hooked up.

Right now all I have hooked up is the PC and then the 24v PSU is ONLY powering 1 amp, and that 1 amp ONLY has the 2 front speakers connected to it.

I also have grounded the ATX PSU in the PC with the 24v PSU by running a wire from the -V on the 24v PSU to a ground pin on one of the 4 pin molex connectors.

The speaker wires are coming from the 4 speaker wire pins on the JAMMA harness that I pulled. Now to be clear I pulled the pins and wanted to keep everything stock, so what I did was extend the wire from the JAMMA harness for those 4 pins to the amp. But I did not solder them and did not want to cut the pins, so I basically stripped like 1" of wire, put it through the pin and then wrapped the rest around it, and then used heatshrink to keep it pressed hard against it. If this could be the culprit, then I'll definitely just cut and solder wire but I was trying NOT to do that and thought this would be okay.

The UFFB is not being powered at all, there USB cable is not connected between the PC and it, and the 4 pin molex connector is not connected to the UFFB. I also pulled the power from the motor, so the motor is not getting any power as well.

And even after doing all of that, with JUST the 2 front speakers hooked directly to the AMP, I am still getting the exact same static as I was getting with everything else hooked up.

So does anyone have any ideas on how I can try to fix this?

EDIT:

Oh and also, the original PSU for the cabinet is not plugged in at all or turned on. I also disconnected the 2 wire bunches from the original power supply that went all through the cabinet wiring. I wasn't sure if this information would be of any help.

EDIT 2:

Oh one more detail - there is no CRT in the cabinet either, there is an LCD that is just being plugged into it's own outlet on a power strip.
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