Eric's 2009 BMW 128i JL/Alpine and Arc system
The first modification was to remove the
factory headunit and replace it with a new
Alpine Flip screen monitor.  These units both
look and sound great
.
In the trunk we installed an ARC Audio KS300.2V2
amplifier which was powering a JL Audio 12W7.  To say
this thing sounds great is an understatement!
Another happy SoundSational customer!
My favorite part of the installation.