I just got off the phone with customer support over at al-eds. The tech said that JL Audio makes these boxes from a mold. He doesn't understand why the hole would be off. They will get back to me tomorrow as JL Audio is on the east coast and is already closed. I'll keep you guys posted.

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[Sold] 2004 X5 4.4i - Sterling Gray - Truffle Brown, Sport, Preminum, Rear Climate, DSP, Sirius, PDC, 132's (19 inch wheel), Comfort Seats
Dynavin, JL Audio Stealthbox, Alpine PDX-5 Amp