F150tx2

Anybody put a subwoofer enclosure under rear seat and how did you connect to factory radio

04trd

Yes sir I did! JL makes a stealth box that fits under the driver side rear seat. Mine has a JL 13.5 sub but I'm sure u could get what ever u want. As far as hooking it up. I didn't do it. I had a shop install it cause I did top of the line JL speakers and all that fancy crap. I know they had to buy a 100 dollar program to tune everything threw the factory radio though

J15

www.supercrewsound.com

Used a line converter to send a signal from speaker wires to the amp.

jebsurf

Yes you need a LOC. Honestly tho, I'd get a Audio Control LC7 or DQ-61 instead of a basic LOC