From: Woofer Speed

[bose301s 1]

Take an inductance of 0.8 and put 800 grams of mass on it with a motor with 6tm of bl and tell me it's still gonna have good transient response and higher frequency extension as one with ~3mH and ~230 grams of moving mass......mass does matter

You've just got to weigh out the point where bl/mass/vas and factor in the DAF, the lighter you build something the more prone it is going to be to breaking...cross the line and you've got failures, stay on the edge of the line and you have the best of both worlds, good transient response, solid response curves..and things don't break.

No offense but in terms of SQ Nick's drivers kick Fi's drivers asses.