What are the advantages and disadvantages of high pitch in the back cavity?

Perfect high-frequency output, inconsistent air pressure. The patented technology of the high-pitched unit in the back cavity, namely the sharp-edged double-ring diaphragm, and the unique wide-band design of the back cavity ensure the advantage of perfect high-frequency output, but it will compress and stretch the air inside the diaphragm, resulting in the disadvantage of inconsistent air pressure before and after. A sound-absorbing back cavity is added to the back of the tweeter unit, and wool sound-absorbing material is used to absorb the sound waves in the opposite direction of the diaphragm, so that the resonance frequency of the tweeter unit is as low as 600Hz and the reduction frequency band is extremely wide.