Putting 6x9 speakers behind the seat

[tucsonjwt]

I made triangular boxes out of thin MDF and painted them black. I installed regular round speakers (4"?) but you could put larger speakers in them also - just cut the face plate to the size of your speaker. I then built a triangular storage box out of oak plywood for miscellaneous stuff and a cushioned place to transport a 4' level without it getting beat up. I will post pics if you want. It worked out well for me.