Hertz Mille MPS 250 S4

How do you improve on a mature product like a subwoofer? give it to the engineers at Hertz. This revolutionary shallow-mount subwoofer is packed with brand new innovation that enabled Hertz to produce a shallow subwoofer with an extremely stable, linear, compression-free performance characteristic. The spider and cone are mounted to an additional oversized suspension carrier while a vented former and unique air funnel ensures that cooling is efficient a without causing compression.