Originally Posted by
walpurgis
If speakers are not coupled to the floor rigidly either directly or via their stands (if used), then surely the bass driver will impart a rocking moment? This may be small but it will be there and depending on the inertia/mass of the speaker and isolation compliance, may be within the audio bandwidth, certainly the energy from the bass driver will be, but that could excite sympathetic resonances below this. Has anybody using isolating mounts carried out tests to check? A sweep tone could show what is happening.
From the Isopuck website which sort of explains their approach:
The ISO-PUCK’s upper flange “suction cup” design adheres to the underside of the cabinet making the upper isolator live with the speaker, while the lower isolator adheres to the supporting surface. All the energy is managed within the core of the ISO-PUCK’s isolators which are carefully tuned to provide superior isolation and control while remaining on-axis.
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