Primacoustic RX5 - HF Recoil Stabilizer, Horizontal-Fire, 7.5" x 9.5"The Recoil Stabilizer is constructed from a high density urethane base onto which is added a heavy laser cut steel plate, covered by a non slip neoprene top. The steel plate introduces significant mass to the structure and serves to stabilize the speaker. The RX5 HF is constructed to allow the speaker to sit flat on the pad and "fire" in a horizontal direction. Speaker isolation system, providing both decoupling and reducing "recoil" effect Sculpted