Dayton Audio 6-1/2" Down Firing Passive Mini Subwoofer Kit 100 Watts
Down-Firing vs Front-Firing Subwoofers | Klipsch
BESTISAN Powered Subwoofer, Deep Bass Subwoofer, Down Firing Sub in Compact Size, Easy Setup with Home Theater System, TV, Receiver, Speakers (RCA Cable Included, Black),SW65C - Yahoo Shopping
Amazon.com: KICKER TRTP 8-inch (20cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics
Pyle Active Down Firing Subwoofer - 10 Inches, Ported Design with High-to-Low Input Level Controller, Invisible Down-Firing Speaker, Color Black, Built-in Convenience - PSUB10A - Walmart.com
KICKER COMPRT10" Down-Firing Enclosure - AudioWorks of Delaware | Turn It On! | Car Alarms - Remote Starters - Audio Systems - Navigation Systems - Multimedia Systems - Custom Car Rims & Tires - On-site Company Fleet Services
Kenwood Excelon P-XRW122DB Reference Series down-firing sealed enclosure with one 12" subwoofer at Crutchfield