Features：
Active sub-woofer loudspeaker
Solid 20mm Multi-ply cabinet construction
Steel powder coated grill (dent resistant)
Cast aluminum frame 18” low frequency woofer
4 inch edge wound copper clad aluminum voice coil
High power internal amplifier 600W/1200 (RMS/Peak)
Built in 80Hz & 100Hz HPF switch
Phase adjustment switch
Advanced soft clip circuitry improves headroom
and protects the woofer
Ground lift switch
XLR balanced inputs, outputs, links
and high pass outputs
Metal side handles
Pole mount flange 1 3/8”
Tough coat painted finish