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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: RE: Semantics posted by Davey on September 29, 2014 at 06:57:07:
I think Magnepan speakers have sensitivity rating calculated "backwards" to 1 m. It is not a very good idea to measure them at 1 m, far better at 3 m or even more. When I compared with a conventional pair of speakers at my listening position (as mentioned earlier), I recorded a difference of 5 dB at a distance of 4 m to the 3.6. My conventional speakers are rated for 86-87 dB/m (real world numbers) and impedance is the same as the 3.6. The low rating for the 20.7 is really strangre but most reviews have no measurements at all.
I have also looked at the various Magnepan I have. There are partly different magnets and the distance to the conductors on the Mylar is also different. The differencies are small but they are there. Some speakers use heavier conductors, the old Tympani IIIA and the 3-series. The Tympani IVa has lighter conductors but as far as I can measure thicker magnets and spacers. Tympani IVa mids has curved back plates (allow for greater excursion), thinner Mylar and the diaphragm is partioned in smaller areas, low moving mass of these for sure.
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Follow Ups
- RE: Semantics - Roger Gustavsson 10:32:54 09/29/14 (2)
- RE: Semantics - Davey 12:09:54 09/29/14 (1)
- RE: Semantics - Satie 15:51:53 09/29/14 (0)
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