They are super-quiet, a huge improvement over what was in the bass before. I had them installed at Ring Music here in Toronto and they had some difficulty getting them to fit, but that is a function of the bass, not the pickups of course - they are standard size, the bass was a bit off.
Anyway, I can now comfortably cover the spectrum of whatever is needed on any given gig. I have, as they say, all the basses covered. Again, thanks for your assistance!