Actually, for the record, sounds like youre problem is your set up! you can forget getting WORLD CLASS BASS from your speaker run "full range" for HT!!! The reason your old OM6's had so much stronger sound bass and dynamics run "full range" for Ht, was the powered subs!!!! They have their own amps built in to handle the bass much better. this is equivalent(and more...considering how poorly most people set up sub/sat systems) to a very well set up sub sat system, where an ACTIVE POWERED SUBWOOFER(In your case, multiple subs) handles the demanding bass!
ALL HT SYSTEMS should be set up this way really.
if you aren't using speakers with built in powered subs(like your OM6's), then you SHOULD BE USING YOUR SPEAKERS SET TO "SMALL" and letting a powered active subwoofer handle the bass!!!...no if's,and's, or but's about it!
Although BIAMPING will help your bass for a full range speaker like your 802's, it still can't kick out the bass like having a powered sub handle your bass dubties!(although biamping plus crossing over to a powered sub will be even better).
There are FAR TOO MANY PEOPLE who are not getting the kind of dynamic ability from their FULL RANGE speaker system for HT, because they're trying to run their floor standing speakers FULL RANGE FOR HT!...a no no!
Try getting an excellent set up for your subwoofer(s)(make sure it's enough sub(s) to handle your room size...many are UNDER-SUB'D!), then run your B&W's as "small" on your pre/pro, and get the crossover right between them and sub.
Trust me, the dynamics and bass will return to your system!
Ther's a reason THX came up with the 80hz crossover to a powered subwoofer parameter!...because they spent hundreds of thousands of hours figuring out that it works best!!!!