Validation

 Tweakings validation with friends is impossible and deceptive...

Each tweaks to be recognized ask for a very subtle knowledge of your system/room   parameters with your ears/brain as pilot...

it is our ears/brain that need training not our friends...

They can only say your system is good...If they are our friend...And not audio sellers...Or worst audiophile friend not very happy to admit that your low cost system do not lag so much behind their ultra costlier one...

 I invite my friends for music listening not sound test...

@bugredmachine 

Congratulations for your many houses systems..

What struck me is the fact that you paid attention to acoustics.

The validation of acoustics concepts  occur in experiments...

 Any other validation has nothing to do with sound quality...