In Reply to: RE: A thank you and a question posted by pictureguy on September 14, 2014 at 23:58:25:
I'm not sure of the exact specs of the 20.1 vs 20.7 drivers, as I don't think anyone has measured a 20.7.Yes sorry I am probably talking nonsense about the foil being lighter. It does have other advantages though, like better adhesion, and better damping of the diaphragm.
I think the MG20 midrange (though single ended, not push pull like in the MG20.1 and 20.7) still uses the QR foil. I had intended to rewire the mids of either my 3.3Rs or MGIIIas with foil (I have 3 spools I bought from Magnepan 3 years ago), but I have not got around to it yet. If I ever do it I'll post about the difference. (but I might not bother actually as I'd rather sell both and get a 20 or 20.1)
I had some Tympani IVas for a while (which I completely rewired, a 1 month job) and those were problematic in a small room as the bass crossover is set quite high and the bass was too directional when you were sitting close to them. Just didn't sound right. You need a big room for them. That's why I like the 20 series. Although they are big the bass crossover is lower and hence the bass is less directional, so I think they could actually work OK in a smaller room if necessary (even though it's obviously not optimal). They 20s have a Tympani level of performance in a higher but "smaller" overall package.
Edits: 09/15/14
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Follow Ups
- RE: A thank you and a question - Davy 08:33:50 09/15/14 (6)
- RE: A thank you and a question - Norman M 12:13:23 09/15/14 (5)
- RE: A thank you and a question - Davy 03:28:57 09/16/14 (4)
- RE: A thank you and a question - Norman M 09:10:12 09/16/14 (3)
- RE: A thank you and a question - Davy 09:20:50 09/16/14 (2)
- RE: A thank you and a question - Roger Gustavsson 12:22:10 09/16/14 (1)
- RE: A thank you and a question - Davy 14:17:20 09/16/14 (0)