The drive units of the DM2 are not aligned vertically, so the speakers are 'handed'. The left hand speaker has the badge on the left and the right-hand speaker has its badge on the right. This arrangement places the tweeters at the extreme left and right respectively, and outside of the woofer. If however the speakers are placed far apart from one another then B&W advise the speakers are reversed so the tweeters now lay inside of the woofers.
https://www.bowerswilkins.com/sites/...DM2_manual.pdf