The v4 is tuned to present the soundstage from the front plane of the speakers towards the back...in your case right out the window. v2 and earlier are different. I'm not sure about v3.

Presumably you don't face the TV when you sit on the couch to listen to the M50s. smile You may be sitting too far to the left.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated