PylePro Model : PSI21Sound Isolation Dampening Speaker RiserSound Dampening Speaker Riser - Studio Speaker Acoustic Platform Sound Isolation (22.3'' x 15.0'' -inches) Features:Includes (1) Speaker Riser PlatformLab-Tested Sound Dampening Acoustic IsolationAssists in Achieving Optimal Audio PerformanceHigh-Density, Engineered Durable Foam Reduces Vibration & Unwanted Audio ResonanceStabilizes and Isolates the SpeakerEffectively Absorbs Bass RecoilAnti-Slip Rubber Speaker Base PadDurable Carpet Covered Platform BaseUniversal Compatibility: Works with Virtually All Speaker TypesWorks with Studio Monitors, Subwoofers, Loudspeakers, Shelf SpeakersUsed by Musicians, Instrument Players, Performers, Sound Engineers, DJs, MCs, etc.Perfect for On-Stage or In-Studio UseTechnical Specs:Construction Material: Engineered Foam, Blanketed Cover MaterialMaximum Speaker Weight Capacity: Up to 100 lbs.Total Unit Dimensions (W x D x H): 22.3'' x 15.0'' x 3.0'' -inchesThe Pyle Sound Dampening Speaker Riser helps to achieve optimal audio performance. The lab-tested and engineered foam isolator platform helps to eliminate unwanted levels of audio resonance while promoting the flow of 'clean' speaker sound projection. Speaker stabilization, noise-isolation and sound dampening absorption give your audio frequencies free-flow ability, with more natural bass clarity. High-density foam construction and universal speaker compatibility effectively stabilize and reduce recoil for any audio application whether on stage or in the studio. Fill your acoustic environment with accurate audio reproduction with the Pyle Sound Isolating Speaker Dampener.