Primacoustic 8 Pack Offset ImpalerThe Primacoustic Offset Impaler offers an effective method to increase bass absorption by introducing an air cavity behind a Broadway panel. This delivers as much as one extra octave of low frequency attenuation without any additional cost. The U shaped design is equipped with pivoting darts for left hand or right hand installations, thus allowing the same part to be used on either side of the panel. Front access holes provide easy access for a