Originally Posted by Technic
First of all, reduce to a minimum (1-square) the speed-dependent EQ setting. I bet that the bass sounds decent and punchy while stopped but forcefull and muddy while at speed.
You need a trunk sub and a XD500/3 (underseat woofers and trunk sub) amp.
By having the sub- and midbass separate from the OEM system you will be able to adjust the EQ much better for the rest of the speakers and better control of the bass blending via the adjustable crossovers in the XD500/3.
Thx a lot. I will definitely try it out