Primacoustic IsoWedge Foam IsolatorThe IsoWedge and IsoPlane are monitor isolation pads designed to decouple the sound from the loudspeaker so that it will not resonate with the desk or shelf. This helps reduce an effect called comb filtering that occurs when various frequencies add or cancel with each other when coupled. The IsoWedge is angled while the IsoPlane is flat. This allows the user to select between either platform shapes to optimize the studio setup. The IsoPlane can also