I've been out of the SB loop for a while now, thought I would chime in a bit, as my bass is a bit different.
I have an SB5000 with the Vol/Blend and 3-band eq, maple fingerboard, alder body, to which I had a passive tone and active/passive switch added by Carey Nordstrand's shop (since Carvin wouldn't do that). I also found the bridge pickup a bit too thin and bright, so I had them replace it with a Big Single, routed to be a bit closer to 60's position rather than 70's. It's a great bass with a HUGE range of tones now (sweepable mids, active/passive with passive tone, bright J99 at the neck throaty Big Single at the bridge).
I also have a 2012 American Deluxe Jazz V, and although they sound different, there is some overlap, with the Carvin more modern and bright compared to the Fender. Although I like it a lot, I just haven't been playing the Carvin much lately. I'm switching out the pickups in the Fender (N3's are noisy!), and then I'll do some more head-to-head comparisons between the two. The new Fenders are really nice, so it should be interesting.
Here it is in original form:
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New bridge pickup:
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New controls (added stacked passive tone on the volume, and active/passive switch):
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Nice! Finally someone with different electronics! Would love to hear clips.