Ferro fluid cooled- whats this?

[cerwinmad]

Hi i was wondering exactly how this ferro fluid works and where its actually located in the tweeter. all the tweeters in my system claim to be ferro fluid cooled. is it a gimmik or a respected method of improving performance? cheers. oh were talkin about the speakers in my sig.

 

[3db]

http://en.wikipedia.org/wiki/Tweeter

There's a section describing what ferro fluid is used for in a tweeter assembly.

 

[TLS Guy]

Almost all tweeters, and now a few woofers use ferro fluid.

This magnetic fluid placed in the voice coil gap.

Benefits: -

Conducts heat away from the voice coil. This increases power handling and lowers the incidence of tweeter burn out.

Lowers the Fs of the tweeter, so it can reproduce lower frequencies. This allows a lower crossover point and or lower order filters to be used. I like a tweeter down 24 db by Fs. A tweeter without ferro fluid has an Fs of 1200 to
1500 Hz typically. With ferro fluid they are typically 650 to 1000Hz and some as low as around 500 Hz.