In preparation for my real subwoofer (JBL GTO 1014) in a sealed box, powered by a Kenwood KAC-7204 500w x1 @ 4 OHMS with an MTX Re-Q for the line level output and bass restoration, I built a box to seal up the rear deck. This will tighten up the Mid-Bass and protect the 6x9's from the pounding the JBL would give them from below.
3" H on the Rear of the box
2" H on thr Front of the box
1" x 1" - 45 degree cut for the drop to 2"
38" Wide (If I remember correctly)
I used black Plasti-Dip to paint the box and "L" brackets to mount to the rear deck. I put 1/2 thick door foam rubber insulation to seal most of the gaps between the deck and box.
3" H on the Rear of the box
2" H on thr Front of the box
1" x 1" - 45 degree cut for the drop to 2"
38" Wide (If I remember correctly)

I used black Plasti-Dip to paint the box and "L" brackets to mount to the rear deck. I put 1/2 thick door foam rubber insulation to seal most of the gaps between the deck and box.
