MAC Autoformers?

It seems you are consistently more interested in the technical data on hifi equipment that I'll bet determines what system or systems you own and like.  

Do you ever throw care to the wind and just trust your ears?

I alwasy do both Pops. As do all designer of good amps, without bench testing, laws of electronics, tech data, if you bought such an amp off some who doesn't do these you'd have a pile of junk. 

Cheers George

I am going all out to prove my ignorance and ask a question on autoformers.

I suppose we all agree that one advantage of autoformers is to deliver the same amount of power regardless of variations in a given speaker impedance curve.

So here is the question: a speaker with huge variation in impedance curve will receive considerably more power where the impedance deeps way below its average curve, and if that speaker in fact receives more power at certain frequencies then those frequencies will be greatly highlighted, so there goes your flat response!

Yes? No?

^No, usually. Typical loudspeakers vary sensitivity with impedance.

So here is the question: a speaker with huge variation in impedance curve will receive considerably more power where the impedance deeps way below its average curve

If the amp can’t supply like this it won’t sound flat from 20hz to 20khz, look at the (grey trace), this is the frequency response of the amp into a mild simulated speaker load, and it will benefit from the use of an autoformer..
https://www.stereo.net.au/forums/applications/core/interface/imageproxy/imageproxy.php?img=https://w...

An amp that can supply, looks like this (grey trace) nice and flat 20hz to 20khz and if you put a autoformer on it, the sound will be worse.
https://www.stereo.net.au/forums/applications/core/interface/imageproxy/imageproxy.php?img=https://w...

Cheers George

Shadorne, I don’t know. Careful amplifier pairing might be prudent.