Hi Jean Olivia

Primarely, it is because the Bose is monophonic. It universely spreads the sound, but not separately like two stereo speakers.

In stereo, panning would place different instruments left or right in the stereo field like a real band. Since there are two speakers spread apart, you can achieve separation.

There is a long standing debate over stereo vs mono. My opinion is that lugging two speakers so a few people in the sweet spot can here this separation is not worth the hassle. Others feel differently.

In your case, I wouldn't worry about changing the panning at all. IIf you like what you hear, others will too.

Bernie