Pyle Pro PSI15 15 x 15 Sound Dampening Speaker Riser Platform BaseUniversal recoil stabilizersAssists in achieving optimal audio performanceHelps promote the flow of clean speaker sound projectionReduces vibration & unwanted audio resonanceStabilizes & isolates speakersEffectively absorbs bass recoilMade of high-density, engineered durable foamSpeaker is placed on the pad platformAntislip rubber speaker bass padSuitable for on-stage or in-studio useUniversal compatibility with virtually all speaker typesWorks with studio monitors, subwoofers, loudspeakers, shelf speakers & moreWood base, engineered foam & blanketed coverMax speaker weight: 90lbsDim: 2H x 15W x 15D15 x 15 Sound Dampening Speaker Riser Platform Base