The 12" in the vented enclosure was an experimental setup from my previous vehicle. I built that box to see how vented vs. sealed sounded. The big box slams.

The 10" is a Diamond Audio D3 that I just picked up this week. The bass is tight, musical, and plays with authority. Not as boomy as a vented 12. The Diamond will be the permanent sub.

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2004 BMW X5 3.0i - Mine
2011 BMW 328i xDrive - Hers
2002 BMW 325xi - waiting for a new owner