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In Reply to: RE: personally I'd consider 20.1s posted by tedtag on September 29, 2016 at 12:19:38
The Statements are rated 150WPC but 16 kt120s should giver you 450WPC triode given a big enough trannie. The expense is not commensurate with the improvement available from biamping. So looking at the 20.1 as the base case, you can probably get a 20.1 and biamp it with your existing amplifiers - any would do as the subs take off the deep bass, and if you need extra boom power because you want to take out your subs then you can get a KW SS power amp to do the high current heavy lifting. The 20.1 is an over all improvement on the 3.7 in the same way that the 20.7 is. Relative to the 20.7 you are missing the low order series crossover and the better integration/coherence.
But to retain that in single amp mode will cost you much more in amplification than the speaker itself. Then you would lose on trading the speakers if you modify them for biamping. So the cost differential in doing the 20.7 single amp vs. 20.1 is probably in excess of $20k. In trading the 3.7 for a 20.1 you might end up with nearly no cost but for the active crossover - I suggest a First Watt B4 and later have it modified with better parts and a bigger power supply if you think it would be your weakest link..
Follow Ups:
The First Watt B4 x/o is on sale for $995 from Reno Hi-Fi right now.
Thanks BDP24! Also, I found a pair of 20.1's on Audiogon for $7500; 1 owner, bought new in 2001, says 8/10 condition i.e. near perfect with a couple of scratches on the wood bracing that could be buffed or touched up. Any thoughts?
Too old to justify the price unless you can inspect it yourself. You have a higher risk of delamination since that is before the introduction of the new glue, which was 2007 or 2008. The condition and the storage history of the speaker is the main determinant of its value, delam risk rises with a history of exposure to sunlight and moisture. You need to ferret that out before making an offer.
Magnepan can replace broken drivers at some cost - the upside being that you have a new speaker with no known expiration date. So you need to keep that in mind when determining the right price to pay.
I'll keep looking. Good advise. These were in California and I'm in Georgia. Thanks Satie.
Spence
Thanks Satie. Sounds like a good idea to see what's available in 20.1's. If they don't work in the room, I could sell them for a minimal loss and if they do I'd have plenty of options to biamp. I'd probably keep my 3.7i's anyway as a back up plus I'm going to have a second room for another system in a few months and I've got plenty of great electronics already. I'll let you know and may need some more advise depending on how things go. Appreciate everyone's great input and tremendous knowledge!
Edits: 09/29/16
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