Dayton Audio MX15-22 15" Max-X High Excursion DVC Subwoofer 2 Ohms Per Coil
High-Efficiency Dual 18' Line Array Subwoofer Speaker - China Speaker and Line Array price | Made-in-China.com
Acoustic Elegance TD8M high efficiency midrange/midbass driver
High Performance Sub-Bass System Subwoofer Stage Equipment Extend Low-Bass Response High Efficiency - China Music Equipment and Bass Speaker price | Made-in-China.com
High Efficiency Speakers
Dayton Audio HTS545HE-4 Kraken 21" High Excursion Subwoofer with 5" Voice Coil 4 Ohm
Dayton Audio MX12-22 12" Max-X High Excursion DVC Subwoofer 2 Ohms Per Coil
ExclusivIT - KLIPSCH - RP-1600SW 16" HIGH EXCURSION SUBWOOFER
Focal SUB ONE - High-Efficiency Subwoofer - Professional Audio Design | Professional Audio Design, Inc
FaitalPRO Introduces Two New Midrange Drivers and One 18” Super Woofer at Prolight+Sound 2018 | audioXpress
Hertz DS25.3-P Car Audio Subwoofers with High Efficiency and Power H
SCP - Coda Audio
Amazon.com: wet sounds | Stealth AS-8 | High Efficiency, 8" Active Marine Powered Subwoofer with Built-in 350 Watt Amp | Remote Level Control Included (Black) : Electronics
Faital PRO 10PR300 4ohm 10" High Efficiency Woofer Midrange Bass Guitar Speaker | eBay
Rcf MB12N405 12-in Woofer W/hypervented Neo Mid-bass Design W/a Linear Frequency Response & Very High Efficiency - Walmart.com
Acoustic Elegance TD18H+ high efficiency bass woofer
Audio System M 08 Evo M-SERIES 20cm High Efficiency Subwoofer 300 Watt | eBay