2020 24 MXZ sub and amp swap

[Kseiter]

First, let me say thanks to the forum members for support in figuring out how to build the RCA and remote power adapters. My upgrade is complete but I picked up a buzz from all speakers at low/no volume. Not sure if it’s the adapters I built, but could use some thoughts on isolating it. Motor is off so its not the typical ground fault issue that causes the alternator wine. The sound does not increase... just an audible buzz when music is not being played.

Subs:

2 JL 12w6v3’s in ported enclosures - 1.3cf tuned to 33 hertz

Amps:

NVX VAD27001 for Subs - Overkill, but I might add another sub down the road and I didnt want to draw a lot of current.

3 NVX VAD8402 amps for the cabin (front/rear) and tower speakers