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In Reply to: REVIEW: Magnepan Magneplanar MG2.6R Speakers posted by Robert C on April 22, 2007 at 18:09:45:
I also would try Zero Impedance autoXformers, which seems to help amplifiers deliver more amperes
♪ moderate Mart £ ♫ ☺ Planar Asylum
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Hey Mart,I'm no expert, but how would adding an external autoformer effect the Mac's, which already use and internal autoformer?
from what I understand, many tubies seem to desire an output tap between 2ohms & 4ohms when propelling Maggies optimally (maximum clean current). That usually means employing an 8ohm tap & 3:1 autoXformer step-down, for an effeective 2.67ohm tap (usually accompanied with an increased effeective amplifier damping factor from seeing an effeective 12ohm nominaative load).
♪ moderate Mart £ ♫ ☺ Planar Asylum
Please tell me what I'm (apparently) not understanding, Mart. I thought you wanted the tube amp to see a higher impedance, thus the addition of an autoformer. Most tube amps won't do squat at under 4 ohms. Or, maybe they WILL squat. Seems like 8 ohms and higher is what tube amps need to see. Isn't this correct?
Be-Bop and Mahler
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