The Auralex SubDude(HD) is a 15" x 15" x 2.5" platform wrapped with a cleanable black velour to fit any room setting. Its purpose is to prevent sound from transmitting through your subwoofer to surrounding surfaces.
SubDude HD is sold individually here (per 1 item), not in units!
Subwoofers create big vibrations (low frequencies) that you can feel in the floor and in objects placed nearby. When the source of the vibrations is coupled directly to the floor it causes these objects to vibrate or resonate – not only at the fundamental pitch the source is creating but also at harmonic frequencies that discolor the true sound from the source. Now you have two (or more) objects vibrating, which creates an acoustical problem called “secondary resonance”.
Impact STL (Sound Transmission Loss) is a decibel reduction based on the vibration component of sound transmission. This test was estimated – a partial area of the test chamber’s floor was floated using PlatFoam to mimic real world conditions. Not in strict compliance with ASTM E492.
