Resistors vs.peltz Autoformer- Differences

@almarg , @atmasphere ,
Thanks, that is exactly the information I was looking for.
Sorry if I wasn't clear at the beginning.
Bob

Look all, to prove it to yourselves that Zero's are a band-aid fix, just put a pair on an amp and speaker that have NO problems with each other and hear what happens, SOUND QUALITY TAKES A BIG HIT!
We've done the experiment at our audio society meeting, and it was 100% unanimous, that the Autoformer is a baind-aid for a problem that should be fixed at the source with different speaker or amp.
Cheers George

@georgehifi .
That isn't what this thread is about.
I just wanted a clear explanation of what these 2 devices are doing.
Ralph and Almarg provided that. 
Bob

gdnrbob OP3,025 posts
01-31-2020 9:05am
@georgehifi .
That isn’t what this thread is about.
I just wanted a clear explanation of what these 2 devices are doing.
Ralph and Almarg provided that.
Bob

I understand that’s all "you" wanted to know, but it’s the smoke screen that’s given here about autoformers/resistors that are in series or parallel that causes me to post, as it gives "others" the wrong idea that the use of them is going to solve a problem without any negatives, which is wrong!!

As I said the best is to have the right amp or speaker for the right speaker or amp, without using band-aid fixes that add other problems..

Cheers George

@atmosphere -

Since the speaker is so efficient the power loss is negligible.

As I read I was thinking, it would lower the load on the amp, but wouldn't it be current dividing? Wouldn't that affect the energy the driver sees?
Thanks for that.