Celestion's TF1225 12" speaker boasts high power handling and excellent efficiency, thanks to its optimized 42 oz. ceramic ferrite magnet, 2.5" copper voice coil, and vented pole piece. It delivers strong, smooth response to beyond 4 kHz, and delivers a strong bass punch in any type of enclosure. The TF1225 is intended for use in 2-way or 3-way pro loudspeaker systems.