If I've been getting 'wooly' bass with good pickups ( notably on Gibson / Mahoghany type guitars ) I change the 10 - 46 set to 10 - 52 and the detail returns nicely. I usually use D'addario 10 - 52s - but get a bit miffed as the top 'e' tends to unwind at the ball end if you release the tension ( i.e. to clean the fret board ) and re- tune. This issue never seems to happen with Ernie Balls - but I am used to working with the tonality of D'addarios. I tried some of the ( B.K.P. supplied ) Rotosounds, but they left me feeling a bit neutral tone wise.
As has been previously mentioned , B.K.P. are very sensitive / responsive to pickup heights - and I find a gap from the top of the two 'E' pole pieces to the underside of the string ( held down at the last fret ) of about 2mm is a good place to start. For a darker and more compressed sound, I go to a gap of about 1.6 mm , - but for a nice 'open' sound - between about 2.5 to 3mm.
Hope that helps you too. :)