Here's something installers won't always tell you upfront, your car amplifier wiring kit determines how much of your amp's actual power reaches your speakers. Not the amp brand. Not the speaker's sensitivity. The wire Undersized cables cause voltage drops. Voltage drops cause your amp to work harder than it should. That heat builds up, performance drops, and eventually something gives. It's not dramatic. It's just slow damage that adds up until one day your system stops performing the way it did on day one.