[Whackanole]

Hi, I have a 2020 1LS, base model of the base models and I installed subs in the trunk and an amp tapped to the back seat speakers. The issue is, when the engine is at 1100 or 2200 rpm, a loud base tone is produced. After lots of reading the forums, it seems to most likely be from the ANC. Most solutions were showing that you could unplug the ANC from the amp in the trunk, however, I do not have an amp in the trunk. Where would my ANC connect to and how would I go about disabling it? Also, do you all have ideas as to what else might be producing the sound if it isn't the ANC? Thanks