Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
From the looks of it, the EX cover is pretty significant. I expect there may be some changes even at the small signal level. The volume of air behind the cone and the area of the openings forms a sort of chamber/throat relationship. This will affect the electro-mechanical parameters and it should be readily apparent in measurements. I would definitely measure T/S parameters after removing the cover to know what the modified driver does.
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