Hi, I just subscribed so I could get help from someone here. I have a really peculiar situation here and have found nothing like this in the web. Please help me, it's been like 3 days of me messing around with this and no results. (I'm a little bit out of practice with my English, so sorry for cringy accent) https/youtu.be/XA184x8ZbOg
220v 1 PCYes 750w (it supplies about 670w on 12v rail) 80+ bronze PSU (only 1 12v rail, I cut off all other wires and left 13 12v and like 22 GND wires) , 1 Soundigital sd800.4d amp, 1 pair of JBL Club 6520 50w (120w peak) (3ohm), 1 subwoofer FBaudio 250w (1000w pmpo). I thought the PSU would do just fine. Also, one strange thing that I noted was when I turned on the amp with the PSU on +12 and GND, and a notebook charger on REM, the REM voltage went to -9v when measuring with the GND plug.
I have a wattimeter/voltimeter plugged into the PSU power cord, and when I turn on the amp it consumes only 25w off the wall. I cannot confirm if I am overloading it, it's
impossible with the amp on idle http/imgur.com/KXV42rv
Finally watched your video, all u keep saying it doesn't work, doesn't inspire confidence.
For the little I know about this subject, a computer PSU has a pin labeled as POWER GOOD and that pin needs to be hooked up a certain way for this to work. Am really surprised u have not found other sources/video that explains this.
Now this maybe obvious but not all 12v rail on a computer PSU are the same, u want to use the 4/8 pin CPU connector rail, typically this is the rail that carries the most current.