To be perfectly accurate, I should add a minor qualification to the following statement in my previous post, which does not affect my conclusions:
... visualize an ordinary single-amp arrangement. A given input voltage at a treble frequency will result in the same output voltage as would result if that input voltage were at a bass frequency. A passive biamp arrangement needs to behave similarly, or an imbalance between the treble and the bass will result. In both cases, single amp and passive biamp, a given input voltage has to result in the same output voltage regardless of frequency.
In saying this, I am ignoring small voltage differences that may occur as a result of interaction between amplifier output impedance and variations of speaker impedance as a function of frequency, in the case of tube amps having low damping factor/high output impedance.
Regards,
-- Al
