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In Reply to: RE: Measurements on 1.7, 3.7 and 20.7 posted by Satie on September 26, 2014 at 10:40:21
I'd figure some way to Biamp the 20.7 with a QUAD of JC-1 or perhaps a PAIR of Magtech. Than call the electrician out to install a 20 amp service x2…..one for each amp or amp-pair.
Too much is never enough
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If you are willing to open your 20.7's and sketch out the wiring with the values of the caps, coils and speaker resistances (you can get a cheap LCR meter for around $30), I will come up with an equivalent parallel crossover and its active line-level equivalent.
Unfortunately they don't make that easy with the 20.7, but go to your dealer and try it out with the same electronics and see the difference between a small maggie and a big one. I think it is a sensible approach and it is not much of an issue to make the claim that they all have the same sensitivity rating. In the bulk of measurements in S'phile the speakers come in short of their sensitivity ratings - sometimes seriously so.
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