This is my first comment on this forum and I hope it is the sort of thing that is of interest.
As a retired Electronics Engineer spealising in Audio who has been in the industry in a variety of positions, most of my life, from my experience of listening tests for speakers, these are some of the conclusions I have reached:-
1.Listen to one speaker, in mono, at a time.
Even identical speakers placed as stereo pairs will sound different depending on even minor placement differences
2.Ensure the next to be listened to speaker is in exactly the same physical place as far as possible.
3.Make the change over from one speaker to the next as instantaneous as possible
4.Ensure sound levels are as identical as possible between speakers.
5.Use the same source material for every speaker under test before changing it.
As a retired Electronics Engineer spealising in Audio who has been in the industry in a variety of positions, most of my life, from my experience of listening tests for speakers, these are some of the conclusions I have reached:-
1.Listen to one speaker, in mono, at a time.
Even identical speakers placed as stereo pairs will sound different depending on even minor placement differences
2.Ensure the next to be listened to speaker is in exactly the same physical place as far as possible.
3.Make the change over from one speaker to the next as instantaneous as possible
4.Ensure sound levels are as identical as possible between speakers.
5.Use the same source material for every speaker under test before changing it.