Up for sale is a Musicar sub box w/the JL Audio subwoofer. It fits the E90 on the right side of the car on top of the battery. I also have the adapters to come off the factory amp to allow you to install the sub amp. It was a great setup, but I converted my M3 to a dedicated track car a few years ago, so it had to go.
$225 shipped, or $175 for a local buyer. I'm located in Austin, TX.
I also have this cross-listed on the E90 forum
E90 Musicar subwoofer box & JL Audio sub
$225 shipped, or $175 for a local buyer. I'm located in Austin, TX.
I also have this cross-listed on the E90 forum
E90 Musicar subwoofer box & JL Audio sub