Due to the high moving mass of a compression driver, the spectral decay plot shows severe time smear. Long after the inputsignal has stopped, the radiating parts of the driver are still moving. This results in higher overall distortion in the upper frequency regions. This frequency dependant time behaviour is what causes the listening fatigue. The SA Ribbon Compact Driver clearly does not have these problems.
Neodymium is so strong that it was possible to make a magnet with twice the strength.
The low weight of the SA loudspeaker systems makes them easier to handle during transport and simpler to install. All SA loudspeaker systems are therefore smaller in size. And during storage and transport this also means savings in space and therefore costs. In a word . Ribbon tweeters have traditionally been characterized as fragile, with low power handling, low efficiency and low impedance.