I am confused why this is a bad idea, and I find it highly counterproductive to call me "stupid", as the point of this forum is to discuss ideas, not to insult people. There have been dozens of companies over the years who have sold "speaker filters" that do exactly this. There are actually some of these for sale right now on Audiogon (https://www.audiogon.com/listings/lisaebf4-precision-audio-technologies-holiday-pricing-loudspeaker-system-purifiers-hear-your-l-tweaks). Moreover, cable companies, e.g., MIT, have long included "filter networks" in their cables, which I would assume do the same thing, i.e., flatten the impedance curve seen by the amplifier, making its job easier. Isn't this also the goal of the Speltz Autoformers? Am I missing/completely misunderstanding something?
