So you want the best in an SPL woofer? Well, look no further. The new Orion HCCA124 subwoofers are the baddest subs on the planet. Hands down. You could call our HCCA124 sub a "super woofer", but really it's the superior woofer! With its massive 4" high temp voice coil and immense motor, this subwoofer can reach as much as 4" of travel.