Finished my down-firing subwoofer enclosure for two 10's : r/CarAV
JL 12W7 - Down Firing | Home Theater Forum and Systems
Down Firing VS Front Firing Subwoofers (What REALLY Matters!!) - YouTube
18" downfiring project | Home Theater Forum and Systems
Kicker CompRT Truck vs. Kicker CompRT Downfiring Subwoofer
Amazon.com: KICKER TRTP 12-inch (30cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics
How to Make Down Firing Subwoofer ver. 2 - BUILDING - Part 2 of 3 - YouTube
Creative Pebble Plus 2.1 USB-Powered Desktop Speakers with Powerful Down- Firing Subwoofer and Far-Field Drivers, Up to 8W RMS Total Power for Computer PCs and Laptops (Black) : Electronics
Front- and down-firing subwoofers -- Teufel Audio blog
KICKER Comp 12" (30cm) Subwoofer in Down Firing Encl, 4-Ohm; RoHS Compliant : Electronics