Kickstand Premium Member
CarAudio.com Veteran
Try disconnecting the bass Knob and see what happens.No, it’s a universal bass knob. I’m gonna take some pictures and post it
You should be able to control the sub through the HU anyway.
If you can't then just **** it up and deal without it for the purpose of troubleshooting
But set your amp gains according to the instructions the nauc gave after you disconnect it