>>Phil does not believe that room impacts sound, especially in bass.<<
Uh...I haven't written or said this, ever. I said some people may not care enough to do anything about it, yet still find $2000 - $3000 speakers worthwhile.
>>he says that what you put your Souls on does not matter.<<
Nope, didn't say that, either. I said I don't recommend placing speakers on an MDF slab on top of carpet, and explained why.
>>It is "floor height insensitive' because it say so on the box.<
What I said is that Soul is gap height insensitive by design. And it is, above 1/4". At 1/4" or less, it isn't.
>>In reality, put different speaker on carpet, wood, stone, you hear difference in bass.<<
That's a different issue than the question raised, which was a query about the right gap height. But placing any speaker on different surfaces and hearing a bass difference is more a matter of anchorage, speaker-to-floor interface chosen, than specific material. You can manage different material interfaces to the same end.
>>Also, height of speaker can have impact on what you hear because super tweeter is very directional, and that impact tonal balance.<<
Which I stated, in different terms.
>>This is not about controlling gap height (which happen in druid) but about placement and room interaction effecting tone.<<
It is about controlling gap height if that's the variable by which he's hearing differences. As I also said, there are many other factors, room properties being merely a subset of influences. A given user may or may not care to mitigate them.
Phil