- changed/shortened the audio cable from the video card to the amp
- change the position of the power cables and power supply
Thursday 4 May 2023
1Up Arcade Mod: Fixing the Sound
After assembling my cabinet, I noted a lot of feedback (noise, or humm) through the amp. I tried a few tricks to isolate the noise, but I am not done yet. Often this is caused by some circuit (bit of electronic equipment) being grounded, or slightly "out of phase" because they're on different power suppies - though everything I have is grounded and on the same power supply.
It absolutely eliminated the hum! But it also cuts the high and low frequencies, so the sound is a bit muffled. However, until I can really isolate the noise, it is very livable.