Celestion 10" TF1020 10" 8ohm high efficiency woofer midbass midrange.  See pics for specs and response curves.  Makes a great woofer in PA tops, stage monitors and even car doors and stunt walls.

The Celestion TF1020 10" driver uses its hefty 42 oz. ceramic ferrite magnet and 2" hi-temp voice coil to achieve very high output and excellent power handling. The Kevlar-loaded paper cone and double half-roll cloth surround are selected and balanced to deliver accuracy and durability. The TF1020 provides strong bass response and smooth, extended midrange when loaded in pro audio loudspeaker enclosures.