Quote Originally Posted by Immanuel View Post
These are the kind of explanations I see around the web:


  • Cms - Compliance of the driver's suspension, in metres per newton (the reciprocal of its 'stiffness').
  • Rms - The mechanical resistance of a driver's suspension (i.e., 'lossiness') in N·s/m


To me, those look very much alike. I would expect the compliance to be the reverse of the mechanical resistance. But I am obviously wrong. I would be very thankful, if someone would explain which parts of the driver construction/design affects Cms, and wich parts affects Rms - and in what ways.
Compliance is springiness. Resistance is friction. The third one, Mms, is a mass with inertia. Together they form a damped oscillator -- Google it, it's an important concept for all kinds of engineering.