The mutual influence of speakers, amplifiers and cables

[PYP]

From Alpha Audio.    What do you think about his methodology and conclusions?

 

https://alpha-audio.net/background/the-mutual-influence-of-speakers-amplifiers-and-cables/

 

 

[yamamoto2002]

Those small frequency response difference comes from damping factor difference of amp + cable and frequency - impedance curve of the speaker.

 

B&W speaker manual says, in order to achieve the designed performance, 100 or more damping factor of amp+cable combined is needed. It seems the tested cable is 3meter and 3meter is too long and not easy to meet this criteria (for example 12AWG is too thin).

 

 

[Speedskater]

It would have been better if B&W had written:

Total source impedance at frequency 'y' needs to less than 'x'% of the loudspeaker impedance at that frequency.

Yes, that's way more complicated, but some B&W loudspeakers have unusual impedance curves.