Primacoustic RX7 - HF Recoil Stabilizer, Horizontal-Fire, 10.5" x 13"The Recoil Stabilizer is available in various sizes, weights and firing angles to address the vast array of speaker designs currently on the market and personal mounting preferences. To make selection easy, we have produced a simple cross reference chart to match the right Recoil Stabilizer for your monitors. Features: Improves transient response and imaging Tightens up the bass for greater accuracy Eliminates resonance and phase anomalies Improves