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Refrigerated Rear compartment of Speakers?? Problems??

Drivers Power tolerance ratings are notoriously overrated. Actually at about 25% of that rating the VC resistance rises and distortion etc occurs. Manufacturers of drivers design air cooling methods utilizing the moving action of the cone to shuffle air causing heat removal out of the VC and nearby structures. But air is actually an excellent heat insulator and this heat removal method is inefficient. It seems obvious that refrigeration cooling of the rear compartment of speakers would cause a much greater differential between the VC ,nearby hot stuctures and surrounding air and improve the heat transfer out of drivers.

Anybody seen this method used?? Any problems?? Actually my main concern would be condensation of the humidity in air causing water drops and dripping internally. We all know that water and electricity ( in the form of AC to speakers ) don´t mix. But actually cooling dries the air and if cooling is started some time before speaker power is applied this may not be a problem as water and humidity is removed??

Actual refrigeration of the rear compartment can be very easy. Just remove the door out of an old small frig and bolt the frig box to the driver board so that it acts as the speaker rear enclosure itself. It would be nice to be able to use a driver close to its overrated power rating for a change. In PA work some efficient horn designs using a single refrigerated driver may do the job instead of many direct radiation boxes. For example 2x18" boxes with drivers rated at 600 Watt really put out less than 5% of 1/4 of its power rating. So less than 15 Watts of acoustic power is really put out per box. Yet a 300 watt rated driver operating close to full power in a refrigerated 50% efficient horn would put out 150 Watts of acoustic power equalling TEN 2x18" cabs!!

Anyone seen any use of refrigerated speakers....any problems etc. Opinions advice welcomed.


Thanks
Rafaro

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Topic - Refrigerated Rear compartment of Speakers?? Problems?? - Rafaro 05:35:01 02/15/15 (15)
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