Any true humbucking J pickups around?

Which of those Bartolini J-pups produce very little high frequency content? I thought at first that their "Original Dual Coil" would be the ones, but in the description they write " full and warm for that vintage voice you've been craving". I absolutely do not want a vintage J-pup sound. I want a deep sounding pickup with no treble whatsoever. So maybe I am not looking at the right Bartolini J-pickup, but am unsure which one is the one you have.

Also: thank you very much for your very constructive contributions in this thread. All your comments were very worthy of reading.

Every reference I can find says they are 59J, which is the original Dual Coil series:
5-String Original Dual Coil J-Bass - 59J - Bartolini Pickups & Electronics

Description:

Full and warm deep vintage tone - Dual inline-coil hum-cancelling Jazz bass upgrade pickups in Standard 5-string size

I also found a thread that indicates the choice of pots in the preamp could be a factor:
Bartolini / Modulus mods for better tone | TalkBass.com

I believe the preamp in mine is an 18V Bartolini NTMB.
 
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