Actually, there is a lot of credence to listening OUTSIDE of the room. The sound outside is now "equalized". As in, when inside the room you are prone to bass peaks and dips, high fequency ricochets, and an unpredictable mix of direct vs indirect sound arriving at your ears. But OUTSIDE the room, the entire sound (spkrs + room + flat bass) comes out of the door in a homogenous manner. Once you step inside the room, you have to get your ears to the right spot where everything might equalize to some extent (assuming good speaker-room interaction). But outside, it has already been blended to smooth, coherent sound.
This is best demonstrated by having your significant other point out changes in your system's sound, while standing in the KITCHEN!
This is best demonstrated by having your significant other point out changes in your system's sound, while standing in the KITCHEN!