SuperBrainAK

I replaced C48, C53, C60, C11 and the amp sounds the same, barely any volume at all cranked to 100%

Hey all I have a Sub 10 here and the PSU and amplifier section I think are working perfectly, I have the right voltages in all the right spots 86.8v main supply 27.71v into the regulators 5.55v between the big resistors, the balance trim pots are 250 ohms each. The problem is there is just no sound coming out, when I connect a phone audio directly to what I believe is the input to the amp section using the JST connector pins furthest from the regulators I get a tiny amount of sound with the phone cranked all the way up. I then tried the same phone with the pre amp board attached and the gain all the way up I get the same amount of sound. What could be the issue here? I dont see any bad capacitors and for a sub there wouldnt be any in series to the audio correct? In what is typical for a high pass filter. Any help would be greatly appreciated, I can post pics here or videos to my YouTube if needed thanks.