If room treatments won't solve the problem (or are impractical from an aesthetic standpoint), then it seems like the balance adjustment is your best bet.
I would NOT adjust the speaker placement in such a fashion that the speakers are unequal distances from your ears. This will introduce problems with arrival times that could be more un-nerving than a balance shift.
Finally, another trick you might experiment with is to adjust the toe-in on the right speaker. There was a speaker placement guide that I read (I think it was from Audio Physic - but it dealt with Psychoacoustics as a factor for speaker placement)...anyhow...it recommended adjusting toe-in on each speaker separately until you reach the optimal balance between soundstage and imaging. It also said that it would be normal to have one speaker toed-in more than the other.
-Dan
I would NOT adjust the speaker placement in such a fashion that the speakers are unequal distances from your ears. This will introduce problems with arrival times that could be more un-nerving than a balance shift.
Finally, another trick you might experiment with is to adjust the toe-in on the right speaker. There was a speaker placement guide that I read (I think it was from Audio Physic - but it dealt with Psychoacoustics as a factor for speaker placement)...anyhow...it recommended adjusting toe-in on each speaker separately until you reach the optimal balance between soundstage and imaging. It also said that it would be normal to have one speaker toed-in more than the other.
-Dan