REMUS wrote:
http://www.mtxaudio.com/caraudio/pro...jackHammer.cfm
Isn't strontium radioactive? Maybe a different isotope?
Indeed - strontium-90 is what you're looking for...
Imagine the power of that sub if the magnet assembly was a neodymium
magnet....
You wouldn't even need bolts to secure it 
Neodymium magnets are ace aren't they - many prosound speakers are fitted
with them now, they look comedy small on the back of 18" woofers with 5 or
6" voice coils and tiny magnets...
Why would anyone buy a sub like that!? I would of thought even in SPL
competitions, multiple 15"/12" configurations would move more air...
although that beast does have the added novelty factor of looking
like a nuke or a time flux capacitor lol!
It's all about changing localised air pressure - SPL contests are all
measured nearfield so the important thing is to have huge area x xMax. Big
speakers for quality audio have big diaphragms to keep the excursion
required for an output level as short as possible, reducing the modulation
of higher frequencies from the same cone - you'll find people using 18"
frontload subs over a 30-180hz range, but a horn loaded 12" which would kick
as hard won't sound as clean with real music playing.
--
re-configure the solar matrix in parallel for endothermic propulsion
subs... think two of these will fit in the boot?
Linear Mode
