"Scott Dorsey" <
klu...@panix.com> wrote in message
news:kpsfhr$3ci$1...@panix2.panix.com...
> Physics haven't changed. You can have any two of low end extension,
> high efficiency, and small size. You still can't have all three.
> But a lot of what has happened is that efficiency has become far less
> important.
That's true, but even ignoring efficiency it's still hard to get low bass
from a small speaker at high SPL (the fourth factor you forgot to mention)
Huge excusions and power handling from tiny speakers is just not possible,
not with normal cone speakers anyway.
Trevor.