The FSL-1020R02-08 is a sturdy woofer with a reinforced steel frame, double roll surround, and paper cone built for the harsh environments of pro sound. You can expect natural response up to 3,000 Hz and a nice punch in the low end in an enclosure of less than 1 cu. ft. High output and smooth response make this an ideal woofer for a small 2-way or even a midbass in a large 3-way pro audio woofer.