Amp/Subwoofer feedback
 

I bought a 2023 Lexus ES 350 F Sport handling and I decided to do a stereo upgrade by adding an amplifier and a subwoofer. The subwoofer and amp sounds great with one exception. The problem I have is it makes a weird noise from feedback like a wamp sound and I'm not sure what can be done to fix it? I understand that may be a noise canceling thing, but does anybody know what needs to be canceled or fixed to make sure I don't have any bad feedback from my new amplifier and subwoofer? Thanks in advance for anybody's help!