Yamaha skrm 100sfv

subkick shock w/ mounted 6 1/2′ woofer the yamaha subkick low-frequency capture device is a new breed of subfrequency (below 100hz) capture devices designed to bring out the natural sound of bass drums and floor toms. Subkick uses the natural microphonic qualities of a 6-1/2″ woofer shockmounted inside a 7-ply birch/mahogany shell. Mesh heads are mounted on the outside, which adds a tiny bit of sustain. The natural resonance of the shell combined with the heads and loudspeaker create an awesome subfrequency sound that must be heard to be believed