browntimdc said:

Simply no truth to there being such a thing as faster subwoofers.

What about lower cone mass?
Say 2 x 10" instead of one 15"-er?

Less cone mass will result in a higher resonant frequency, not 'faster'
movement, given a constant suspension/box compliance. If the driver is a
faithful transducer the physical speed will be a function of dV/dT. A
smaller cone might have better transient response, but 'faster' isn't the
way to describe that.

Thanks for the explanation, I'm kind of new to loudspeakers.

--
Sander deWaal
"SOA of a KT88? Sufficient."