Jim, I am unfamiliar with Maggies and I did not quite follow your measurement scenario so maybe I am missing something. But I did learn a lesson the hard way on my speakers. Adding a second amplifier (identical to the first) did not double the available power. I did gain the benefits of going to an active crossover vs a passive crossover but the small power gain was pretty much the result of the crossover type change, not the extra horsepower up front. And maybe there was no power gain at all and it was just the change in presentation from the crossover change. Anyway, the failure to increase power was a major surprise and disappointment but an excellent learning experience.
Consider this for a two-way speaker (considering one channel at a time). One amplifier sees the combined impedance of two drivers in parallel. That combined impedance is less than the impedance of the highest impedance driver. The amplifier will have a certain output into that impedance.
Add a second amplifier identical to the first. Each amplifier channel will see the impedance of a single driver. That impedance will be higher than two drivers in parallel and the amplifier output will be diminished.
If I got this wrong I would appreciate a gentle education. Those few members who continually post negative and critical comments need not respond.
Consider this for a two-way speaker (considering one channel at a time). One amplifier sees the combined impedance of two drivers in parallel. That combined impedance is less than the impedance of the highest impedance driver. The amplifier will have a certain output into that impedance.
Add a second amplifier identical to the first. Each amplifier channel will see the impedance of a single driver. That impedance will be higher than two drivers in parallel and the amplifier output will be diminished.
If I got this wrong I would appreciate a gentle education. Those few members who continually post negative and critical comments need not respond.