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RE: I don't doubt the truth of what you say,...

Well the Spectra 2200 go from 2 ohms in the bass to about 16 ohms in the mids back down to 2 ohms in the highs. Couple that with the high capacitance and the fact that "The Beasts" and the Silvawelds both have about 10db of negative feedback and maybe you have a recipe for oscillation.

At this point, if I ever get electrostats again I will direct drive them with something like an Acoustat Servo Charge amp (there is a shop in Holland that makes a pretty nice derivative of this amp), or a circlotron OTL (Atma-sphere or perhaps Joule Electra).

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  Kimber Kable  

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