Hey guys, I have a 99 F350 Supercab as the title says and I am looking to add a subwoofer in the back. I don't care if I can get either an 8" or 10", just whatever fits back behind/under the seat. Does anyone else have a setup like this as I am seeing if a company makes pre made boxes for this setup or if I am stuck geting a custom one made. I have heard that due to the lack of clearance the rear seat may have to be raised a few inches....Any ideas?

 

I don't know how your seat layout is in the f-350 but these enclosures for the f-150 are the sh#t!

http://www.mtxaudio.com/caraudio/pro...ures/FXP16.cfm

 

I own a '99 F150 Supercab. I built my own enclosures for two (2) 8" subs that fit under the rear seat, leaving enough room between for mounting the amp for the subs. Supplies for both enclosures were less than $30. The hardest part, other than actually building the enclosures, was taking detailed measurements to ensure the enclosures would fit.

I am not aware of the layout of the F350 interior but the space in the F150 is limited (for rear subs). By the way, I did not raise the rear seat.

 

Try www.subbox.net or PROBOX.com. Subbox.net has a pretty good selection of single and dual subs for under and behind the rear seat.