17-Jul-2017, 19:09
(09-Jul-2017, 18:50)ogs Wrote: I think it is a "normal" driver in electrical terms. Large amounts of EQ and power plus SAM of course. Seems to be connected to the amp output via long pins fastened to the flex wire board at the edge. I guess the drivers use magnets too like an ordinary driver. It's the extremely long linear travel that make them really special. Without SAM controlling the output you'd easily break the bass drivers....
Well I think this is only almost a normal driver. If you take as a working assumption that within the phantom you have the equivalent of one D800 or D1000 behind each woofer, the 4500W figure tells you that the impedance of that driver is probably under half an ohm.
To my knowledge, the aluminum spherical shape seen on the edge of the phantoms is the 'membrane' of the speaker.
A small dent in it should have no real noticeable effect because it should not change significantly the emissive surface of the speaker, and if the dent is small enough, the added diffraction probably is bemoan what can be heard.
Jean-Marie
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