Not easy, as I don't have a P-bass myself. I have played them occasionally. They produce that fundamental, punchy sound, in my experience. This is quite far from growling.

The d'Addario chromes (flatwounds) on my Ibanez have some growl (E and A), provided I use the bridge pick-up. With the neck pick-up I don't hear the growl. To be more specific, the neck pick-up of this bass sounds a little muddy.
