Primacoustic RX7-DF Recoil StabilizerThe Primacoustic RX7 DF Recoil Stabilizer eliminates disruptive resonant coupling from the loudspeaker to the stand, while providing a stable base that reduces the recoil caused by the forward energy of the loudspeaker motion. Designed for nearfield monitors, the Recoil Stabilizer is a loudspeaker platform that combines three basic components: a high density urethane foam base to isolate the speaker from the shelf, monitor bridge or stand; a heavy