I just installed two amps in my car. I previously just had one. To me it sounds like the car is alot quieter (music wise) I say this because there is less flexing of my car side and door handle and my rear view mirror doesn't shake as much. The amps are not the same kind, brand or wattage, but I have set the gains the best I could with out a dmm. Anyone have any Ideas why it is quieter?
(btw the two amps are only to the subs, one to each.)