RCF LF18X451 18-inch woofer loudspeaker.
It has a continuous program power handling of 3600 watts.
It features a 4.5-inch fiberglass inside/outside copper voice coil.
The speaker has a frequency range of 30 Hz to 1 kHz.
It utilizes a dual forced hyper-venting system for efficient voice coil ventilation and minimal power compression.