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In Reply to: RE: Tympani IVs in a 12x 22 x9 room posted by Kythyn on May 16, 2017 at 18:11:41
The Crown Macro Reference can power up the whole speaker. better than the Khartago+ Adcom 555. But the Macro is hard a bit bright and thin sounding on top though it is transparent and detailed. The Odyssey amps are richer and fuller sounding. Using the Crown on top would make it necessary to match it with a tube preamp and/or solid core copper wiring..
The Crown would make for a terrific bass amp though. I use a Crown 5002 for my bass panels.
Follow Ups:
It seems then that the options are:1) Bi-amp with Odyssey Khartago on MT and Adcom GFA-555 on bass
2) Power all six panels with the Crown Macro Reference.
3) Bi-amp with the Adcom on MT and the Crown on bass?
There is an Audio by Van Alstine PAS 4i all tube preamp on audiogon for $439. Would be a good match with the Crown Macro Reference?
Please share your thoughts.
Edits: 05/17/17
Yes, the Van Alstine PAS mods are very good with tighter bass and more extended treble than the original Dyna pre. It will do fine driving a 10K input impedance but noticeably better into 50K.
The Van Alstine PAS tube pre-amp will be a real good match with any solid state amp, as long as it's output impedance isn't too high for the amp's input impedance (observing the old 10-to-1 ratio rule. A 1k output with a 10k input, for instance.). I had one years ago, and it's a nice pre, not too warm (without the Van Alstine mod, the PAS has the old classic tube sound).
Each Tympani panel is 16" wide, so a 3-panel array is actually 48"/4' wide, a pair taking up "only" 8' of room width. Still a lot, but less than 9'!
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