I have a vintage Velodyne DD18 subwoofer that just died. :facepalm::eek: Its prodigious 18" cone and 1,250 watt digital servo controlled output was clean (like 2% distortion) down to 15 hz or below. At 120 lbs, it's a monster and understandably provided amazing deep LFE in my 18' x 27' x 9'...
