Anyone Sealed Their Doors? Options

[Coomer]

Has anyone sealed their doors completely to improve midbass response from your speakers?

I'm trying to find a good way to seal the big hole in mine. If anyone has sealed theirs completely, I'd love to hear some advice or see some pics.

[Coomer]

My doors do not have an 8" opening. I have manual doors(no factory power options.)

Maybe I did make a mistake...here's my math:

Speaker diameter = 6.5 inches
6.5/2 = 3.25 inches (radius)
3.14 (pi) * 3.25^2 = 33.16625 sqare inches (surface area)

33.16625 * 3.25(depth of XTC's biggest 6.5" speaker baffle) = 107.79 cubic inches (volume)

107.79/12^3 = .06 cubic feet

I would indeed cut out the back and lengthen the enclosure to, say, 5" or so(and this was accounted for in my original measurements.) So I'd have a bit more airspace. But then you factor in driver displacement(which I don't know exactly for my speakers) and it reduces this airspace. So yeah, I think my math is pretty close.

The manual-door plastic piece does come out fairly far, but can come out a lot further(like 2" or so) with the use of power door panels. I'm not using it though because my speaker doesn't fit into it and would need spacers anyway since the speaker magnet would hit the window when it's down. I'm using custom MDF plates and rings to space the speaker out.

Cliff notes: Unless I take my dear friend Mr. Sawzall to my door, there's little chance of me being able to fit a large-enough(for my tastes) sealed enclosure for my speaker into my door. So I'm going to attempt to go infinite-baffle and seal the door completely.