Why is it whenever I play a bass w/single coils (Rickenbacker or Fender Jazz) I miss the wallop of a double coil. When I listen to name bassists on recordings using a Jazz bass (Marcus Miller, Joe Osborne, Brian Bromberg) their sound doesn't seem deficient I'm terms of depth. Nor does my jazz bass lack depth & punch when I play along with recordings at home. (My bass was upgraded with Carvin j99a pups--big improvement over the MIM ceramic pups.) However, when I play live there doesn't seem to be enough...... BOTTOM for my liking, & I miss my humbucker equipped Ibanez bass. My band mates do notice the difference between pickups & basses, but like anything I bring. I experienced this same phenomenon 40 years ago (!!) when I played a Rickenbacker 4001. I loved the sound of that bass growl, but at performances I felt buried & lost. I felt compelled to get a P bass. (Those old 4001s were weak, with the 4003 pups being a big improvement.) My Jazz bass (with those Carvins) is like the old Ricky on steroids, punchy & robust. But when I play live the Jazz bass it seems to lack the solid foundation of the Ibanez w/humbuckers. Is this problem somewhat of an illusion? Is it something that peeves performing bass players more than anyone else. As a spectator I've never bitched that a Jazz bass sounded weak & said, " that bass player should've used a Precision". But I think that of myself when I play any single coiled bass. I love the sound of single coils until other people are playing, then I feel buried. To remedy the "problem" would purchasing Bartolini double coils (shaped like single coils) give me the best of both worlds? I hear that those 59s & 69s do growl. Do they growl like a single coil?