I'm sorry, Pete, but you really haven't got the message, have you? This constant  tactic of yours of trying to cloud the issue and score cheap points by making insinuations that the character and/or the practice of the individual concerned is not all that it should be does not impress anyone - it only makes people wonder why you have to resort to such tactics, and therefore whether you yourself are not quite so confident of your results as you purport.

I shall repeat one last time - I performed the test as the dealer described. Why Herr Baschung wasn't so adamant about a sealed room I know not, you'd have to ask him (warning - his English is nearly non-existent). However, as I normally listen with windows and doors closed (in order not to disturb the neighbours or the family up above), that's how I did it. Nothing can or should be read into the fact that I didn't mention it. So, stick to the facts and lay off the insinuations - it makes your case (such as it is) stronger.

P.S. Another detail comes to mind. In Herr Baschung's showroom, there is a Room-Animator permanently switched on - beside a permanently open door. Yet it was clear that this was a non-issue for him as he says he hears the effect. Mind you, all the windows were closed, so there was no draught through the room. Perhaps that's more the "critical factor".

P.P.S. Further thought - if this thing works on quartz, Oensingen sits literally in the shadow of a whopperous lump of the stuff - the Jura mountains, which tower over the village. Could it be that this is what is giving Herr Baschung his effect? (On the other hand, how exactly does one turn off a mountain range?). Perhaps we mountain folk don't need such things. )

I was only going to take the Room-Animator, but Herr Baschung said that he'd never had a client with my scientific/technical background in before, so he was keen that I try the Audio-Animator and report back to him (his actual words were, "It's different from having a carpenter or a plumber test it!")

I also did that, and nothing collapsed, not even my expectations (which, admittedly, were zero).