I hope JL Audio comes through with their design for a Stealthbox for the X5. Anyhow, JL Audio currently has stealthboxes for both E36 and E46 3-series.

I am using a JL Audio 250/1 amp to power the subs. Real clean and hardly takes any trunk space. The 6x9s from the HK system now play the mid-bass to get some rear fill.

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