DD Audio 812d D1 12" bass Digital Design subwooferNew Redline 800 series has arrived! We are proud to introduce the all new Redline 800 series. Three sizes; 12", 15" and 18" and all available with D2 and D1 voicecoils. And those coils are serious stuff. Made In U. S. A. black 4" voicecoils are something that our competitors do not and will not have in this priceclass. Like previously released 700 series, these 30 kg monsters have a cast alu frame with DD branding like heavy rubber boots that protect