I installed my system alpine sub jl amp LC2i converter. Everything ran great but I get this increase in bass through the subwoofer only at 1500-2000 RPM I do not have the B&O just the nine speaker system need help thx
This is what I have check
ground wire good check it in 2 spots no ground noise
Ran all wires separate from each other
Power wire ran all by itself
Swap LC2i converters
Even took both rears speakers for input to converter.
made an extra ground on converter to chassis
Upgraded ground wire from battery to chassis
Looked everywhere for ANC except back deck lid
The mic by the front lamp light is the one for the phone speaker for talking
It makes the noise while in park just reving up to 1500 rpm the bass noise starts at 1500 to 2000 then gone after that. I can cruise doing 60 and no noise
Even put a ground wire on the RCAs
Adjusted the little screw on the side of the converter
Played music without iPhone still does it
Played music with iPhone still does
Turned off all audio still does it
I am officially LOST unless there is a ANC somewhere that I’m not tracking
There isn’t one in the headliner that’s for sure like I mention above the only place I didn’t check was the back lid
