The 32-ohm Eminence Legend B810 stamped-frame bass guitar driver offers classic sound with modern features. The 10" driver sounds great and is built to last. Tuned by Eminence"s skilled team, Legend Series hand-built speakes are the culmination of nearly 40 years experience with a state-of-the-art design that meets the demands of professional musicians. A true classic design, the B810 bass speaker is equipped with modern features, such as an M-roll surround for higher excursion and less cone breakage, a double-dipped cone apex for a really strong cone neck, and a bumped back plate for greater incursion before damage. The Eminence Legend B810 speaker is great in both small sealed cabinets and some vented applications as well. Use the Legend B810 bass speakers 4 at a time connected in parallel to get an 8 ohm load. Use them 8 at a time connected all in parallel to get a 4 ohm load.Coil construction: copper voice coil Coil former: Kapton Magnet composition: ferrite magnet Core details: bumped Basket materials: pressed steel Cone composition: paper Cone edge composition: cloth Dustcap composition: Zurette