Tom also builds military grade subwoofers. He had a hand the design of the BassTech 7 servo drive subs as well. Their not being made anymore as I think they we

Tom also builds military grade subwoofers. He had a hand the design of the BassTech 7 servo drive subs as well. Their not being made anymore as I think they went out of business 20 years ago or so. All the reports I've read about those indicated that those subs were a pinnacle of rock concert audio technology and were devastatingly loud, lol. Once BassTech folded, he worked with an online forum known as the Live Audio Board (LAB) to open source the design and replace the servo based driver with a conventional voice coil and cone driver. The resultant design became known as the LAB Sub. A friend of mine built 12 of these beasts ~ 45x45x22 inches and let me tell you, they were amazing performers, that you could build yourself for around $500 (at the time). Mr. Danley truly is a treasure to audio engineering and loudspeaker design.