Lancer: No more drone noise Leave a Comment / Uncategorized / By Ultra Auto Sound This client of ours installed a new exhaust….He loves the new exhaust but hates the constant drone noise. We have a solution for this and its Sound deadening. It definately works! Focal BAM installed in the trunk. The trunk before sound deadening installed. Focal BAM sound deadening installed on the floor under the rear seats Floor before sound deadening installed Share This:FacebookTwitterEmailLike this:Like Loading... Related