It occurs to me that, since an isobaric sub has two drivers, then there are
two options for connection, series and parallel, which results in two
options for impedance - 4 and 16 ohms.

In the interest of giving the amplifier the best chance of maintaining tight
control of the drivers, is one impedance preferable to the other? For
example, what would happen if I put a 16 ohm speaker on an amp that expected
8 ohms?

The amplifier will likely be solid state, 50-100W per channel, maybe with a
low-pass filter at the input (because that seems like a good place to put
it - all of the amp's work is going into the wanted frequencies).


--
Wally
www.art-gallery.myby.co.uk
On webcam: Black Cat In Coal Cellar