my girlfriend drives a e46 bmw 325xi with a jl 12" (don't know model neither does she) and a small jl amp. she wanted to retain the factory look so didn't opt for a new headunit. when she cranks the music or boosts the bass, the door speakers bass becomes muddy. I'm curious about what I could do to fix this problem, maybe bassblockers or some kind of eq? Thanks.
