From the manufacturer's comments on the Stereophile review...
"The platform has a natural frequency of 3.5Hz. The platform
was designed to attenuate low frequency events like footfall near the
platform, low frequency music getting passed back through the
structure, etc. At this, it attenuates roughly 40dB at 20Hz and gets
better with rising frequency. Significantly, the platform has very low
initial friction and will attenuate even very small disturbances. The
turntable itself is designed to be stiff in order to maximize the pitch
clarity the system produces. However, tapping the top of the platform
will, as Michael discovered, transmit into the arm because it bypasses
the suspension system. Tapping is not relevant to any actual use
condition."
Perhaps I enjoy my turntable differently from others, but I've found that tapping my turntable doesn't enhance the musical experience. BTW, I don't own an NVS and have no dog in this fight.
"The platform has a natural frequency of 3.5Hz. The platform
was designed to attenuate low frequency events like footfall near the
platform, low frequency music getting passed back through the
structure, etc. At this, it attenuates roughly 40dB at 20Hz and gets
better with rising frequency. Significantly, the platform has very low
initial friction and will attenuate even very small disturbances. The
turntable itself is designed to be stiff in order to maximize the pitch
clarity the system produces. However, tapping the top of the platform
will, as Michael discovered, transmit into the arm because it bypasses
the suspension system. Tapping is not relevant to any actual use
condition."
Perhaps I enjoy my turntable differently from others, but I've found that tapping my turntable doesn't enhance the musical experience. BTW, I don't own an NVS and have no dog in this fight.