Sound is better when I stand up?


Why is this? No matter my listening room (large basement with 7 1/2 foot ceilings or small office with 8’ ceilings), the sound is more open and more spacious when I stand up from my listening chair. When I sit, the sound compresses a bit. Sitting, the tweeters are about 5-6" above my ear level. Should I angle the speakers down?

My chair is at the apex of the .83 ratio Jim Smith suggests for getting better sound. I'm about 3' from the back wall and my standmount speakers are 3' from the front wall. 

What acoustics are responsible for this?

128x128simao

If one like films, then later in Jan in the PSFF, and that and their summer film festival are both good for film loving types.

We wing back, winged horses, and now a winged plane.
What is next? Paul McCartney and wings?

Coming in late to the discussion, but regarding wanting to understand the wave patterns, if the wingback is made of stiff reflective material like leather, it would act as a high frequency reflector and you would get phase cancelation at high frequencies. If it's curved then it'll act as a concentrator (like a lens or satellite dish or a bowl behind your head).

If it's thick soft plush material, it would be an absorber for mids and highs and possibly even a bass trap. 

Those are my thoughts anyway. Compare to your situation, run some experiments changing the area behind your head with the wing ack, and a sense of what's going on could become apparent. 

@tom_guyette it would be the latter. It's plush and upholstered which means I'm definitely, according to your observations, getting some absorption mids and highs. 

@simao put something hard (remember hardness is a SURFACE characteristic,.does t necessarily mean rigid or even stuff) flat material behind your head in the wingback to see if it changes anything. Even office chair mat material for rolling on rugs would tell you something. 

Decent rule of thumb is if a material makes a click with you tap it with your nail, it's hard.