Autoformer vs Speaker impedance Curve

@73max

Your B&W 802 D3 will be better off driven by a pair of Classe Delta CAM-300 monoblock amps or the CAM-600 monoblock amps. I’ve heard these B&W 802 D3 paired with the Classe Delta CAM-300 & CAM-600 monoblock amps before as well as the Mac MC601 monoblock amps in the same setup and same listening room environment.
They sounded best driven by either the Classe Delta CAM-300 or CAM-600 monoblock amps. These Classe Delta series amps have been discontinued last year and can be had at discounted prices if you can find a used pairs.
The Classe CAM-600 originally retail for the same price as the Mac MC601 ($14k/pair) and the CAM-300 originally retail for $11k/pair). 

These B&W 800 series D3 speakers pair really well with Classe Delta series amplifiers. They sounded great together.
I’m currently using the Classe Delta CAM-600 monoblock amps to drive my B&W 800 D3 front speakers in my dedicated home theater room. They sounded spectacular together.
I’m also using the Classe CAM-300 monoblock amp (single) to power the matching B&W HTML1 D3 center channel speaker. Classe and B&W have great synergy together.

08-17-2018 11:41am@73max

Your B&W 802 D3 will be better off driven by a pair of Classe Delta CAM-300 monoblock amps or the CAM-600 monoblock amps.

+1 This is what I meant by the right amp  73max OP

Cheers george

Thanks George.  I’ve actually read that.

My confusion stems from the fact that some posts imply that autoformers help with a difficult load.   This would seem to imply they would be a good match for the 802D3s.   If, in fact, autoformers function similar to an  output transformer, the opossite would seem to be true.

I suppose it depends  how one defines a  difficult load.  Are these posts just considering the nominal impedance and the sensitivity,  ignoring the importance of impedance curve and phase issues??? Much yet to consider.

Thanks guys for this discussion. Informative and educational.

My confusion stems from the fact that some posts imply that autoformers help

Very simple Max.

Yes they do "help" with amps that can't drive those loads.
Best is to get the right amp that will drive them.
Not to put a band-aid on ones that can't.

Cheers George