REL Acoustics
- Designs and manufactures sub-bass systems for use in two-channel and multi-channel music and multi-channel home theater systems.
- http://www.rel.net/

WinnerShine
- Manufacturer of portable speakers, 2.1 channel and subwoofer speakers for home theatres. China.
- http://www.winnershine.cn

Van L Speakerworks
- Chicago audio dealer makes integrated satellite/stereo subwoofer.
- http://www.montagestudio.com/van/

SV Sound
- Subwoofer manufacturer offering high output bass loudspeaker, via factory direct.
- http://svsound.com/

Velodyne
- US manufacturers of a wide range of subwoofers for audio and home theater applications.
- http://www.velodyne.com/

Hsu Research
- US-built subwoofer technologies, innovative cylindrical designs.
- http://www.hsuresearch.com/

Cowan Audio
- Australia manufacturers of subwoofer, amplifiers to drive large subwoofer and active crossovers.
- http://www.cowanaudio.com/