B&O Subwoofer Spacer Adapter

Very happy with the RAH adapter ring. I used it to install an Alpine S2-W10D4 in the factory B&O enclosure in my Mustang. The ring accounts for all the grooves and contours in the factory enclosure, and the mounting holes lined up perfectly with the sub. It gave the sub a nice, even mounting surface and made the install pretty straightforward. The finished setup came out clean. Definitely a nice solution for keeping the factory enclosure with an aftermarket sub.