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Vandy sub owners-crossovers for 2WQ

Given a amplifier with 50k input impedence and Vandersteen's recommendation that the filter be set at the next lowest value ( according to the WX-2 box )which is 33K, my question is: If the amplifier is an actual 50K input (as is the case with FET transistors used in the input circuitry)why would you want to set it below the 50K? The instructions say set it for the input impedence---very confusing)If you want a 80hz high pass wouldn't anything but a 50K alter this? Also, does anyone have the formula for computing capacitor value for various input impedences to achieve a 6db high pass @ 80hz? Thanks
bigtee

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adapted
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I also made the mistake of calling Vandersteen Audio on this issue. It was such an unpleasant experience that I immediately sold the two subwoofers and cancelled my order for 2 VSM1's. This is clearly a hot button issue for Dick Vandersteen. You would think that the guy could get someone other than himself to field questions from the unwashed moronic public.

It is also my experience that Vandersteen dealers are by and large poorly informed on this topic.

Product -- A+ Customer Relations -- D-
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