I have found the Bose Concert system in my 1998 1/2 Avant to be very "boomy" and muddy. Otherwise it is OK. I was thinking that a good solution would be to just use the existing system for 100HZ and above and adding an aftermarket sub (Like a powered bozaka) for 100HZ and below. Anyone out there with ideas or advice? Thanks.

Ben,<br>I thought I remember a post about putting foam insulation in the rear deck underneath the cardboard and steel.<p>Regards,<p>Reg Short<br>98.5 2.8l QMS.Bose,Weather,moonroof,leather