MOIN! OK, I drive an E220 Coupé (w124, Bj 11/94) and want to optimize the sound! For me it is not possible to mount a bass roller or to perform holes etc.. But amplifier installation is OK… Here’s the question: What can I do to optimize the sound (exchange speakers…). Is there one or the other tip? Recommendations for purchase? I am grateful for all suggestions! Bye, the Hamburger PS: Money plays a role but only the second one!