GSG Audio Design - Here we're test fitting the new Eminence Tour Grade 21 inch subwoofer (NSW6021-6) in two of our new DIY subwoofer cabinet kits. On the top left pic is
Progress pic of my year and a half long build HT - so close to finishing... : r/hometheater
7 Home Theater Subwoofer Battle: SVS SB2000 Pro vs GSG Devastator vs Kraken/ Marty Cube/ Velodyne - YouTube
First finished passive Devastator... - GSG Audio Design | Facebook
Www.gsgad.com. The Birch Devastator 21 is here. There are 2 versions. A home theater version tuned at 19hz and a pro audio / music only version, tuned... | By GSG Audio Design | Facebook
Pro Style drivers used as subwoofers in our Theaters and Media Rooms | Page 3 | AVS Forum
A tale of 12" subwoofers, distortion and 15 dollars. | Page 9 | diyAudio
18" GSG Audio DIY Marty Cube Subwoofer is easy to build. Order with code Jilesgsg - YouTube