The access plate on the lower door works perfectly for a 4x10 speaker...here's how I mounted mine. The 4x10 bass response is akin to pounding on a quart milk carton with a tablespoon, so I'll be hiding a 10" sub and electronics under the seats.


http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/Finisheddoorspeaker.jpg
http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/mountingringback.jpg
http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/mountingringfront.jpg

"If it sounds cool, then it is cool"-Billy Gibbons
I gots a 1950AD 250L6/700R4 and a '52 1 ton Panel

http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/ChevyPIRI.jpg ====The truck
http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/woodyOct10.jpg =====The car
http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/bikeaug09.jpg ====The bike
http://i1206.photobucket.com/albums/bb460/gibsonflatpicker/Panel_zpsszb2b6bo.jpg ======52 1 ton panel (the newest member)