"William Sommerwerck"

I just found the following quote:


** I found it two days ago and roared laughing.

It is the greatest pile of * bull**** * I have ever seen about woofers.


"Only the woofer/subwoofer were not bipolar. These relied in the use of
SF6 (sulfur hexafluoride) gas (which is inert), to increase the virtual
volume of the enclosure. As SF6 is an 'ideal gas', it operates as an
'isothermal' spring, thus avoiding the problems with 'acoustic-suspension'
loudspeakers that operated partially as an isothermal and partially as an
adiabatic system. Some designers seemed to lave little knowledge of Boyles
Law or the Laws of Thermodynamics.

"In effect, the use of SF6, increases the virtual volume of the enclosure
by a factor of 27! As can be appreciated, this both lowers the distortion
as well as permitting a lower resonant frequency of the woofer."

It's here...

http://www.dayton-wright.com/WATSONLABS_.html


** Marketing hype - not engineering fact.

The very next line is soooo telling:

" But to use this, a larger cone mass is needed and the suspension has to be
much more compliant."

Cos it contradicts the rest of the hype.

If SF6 worked as claimed, standard woofers would be all that was needed.

It doesn't.



..... Phil