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In the Forum: Horn-Loaded Speakers
In the Thread: Vitavox S2 with Electromagnets
Post Subject: I do not insist but I do not think so.Posted by Romy the Cat on: 1/1/2010
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 be wrote:
"the cavities behind the coil are not the cavities where pressure passes"

Yes, but the speach coil and diphragm can "see" the air volumes behind the magnetic gap and will be loaded by the resonanses created, and the radiated sound might be affected also.
Think of a 8 inch woofer put in a 10 litre or a 100 litre closed enclosure, no question that that is audible.


I do not think that your example of “8 inch woofer put in a 10 liter or a 100 liter closed enclosure” is the same. The 8 inch woofer in closed enclosure has the air of the enclosure perform damping of the woofer’s diaphragm. From this perspective the air of the enclosure is in the pressure path. In case of a compression driver the chamber where the magnet is (would it be perm magnet of electromagnet) is absolutely decoupled from any paths where sound flows. In fact some drivers has no chambers for magnets and keep the space wide open (Cogent for instance), that helps with cooling a lot. So, I do not feel that size of magnet chamber is effective in compression driver. I do not insist but I do not think so.

Romy The Cat

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