Why does Harman/Kardon need shock mounts?

Because Harman/Kardon's woofers are downward-mounted.
This design has many advantages
First of all, the low frequency is not directional.
Many people who buy Harman/Kardon series of stereo
They enjoy the pleasure of Harman/Kardon's bass.
But the volume is slightly turned up, there will be a paste off the feeling.
Plus the effect of resonance.
The whole desktop will have a strong vibration feeling
This is the so-called audio box vibration
Shock absorbing nail design in the HIFI circle is the use of its very small taper so that the vibration can not be transmitted down, so that the box shock coupled to the earth. The effect of the foot pegs will make it clearer and smoother, especially in the low-frequency part.
It will be more rich in detail, rich sense of hierarchy, the dive will be deeper.