QUOTE(Bear's Gone Fission @ Dec 15, 2007, 3:48 pm)

Yep. The PL's were originally sold through musical-instrument retailers probably with a live-sound focus. The warranties were also shorter than the RE's and numbered mics. I think people just assumed lower quality or "rejects." Smart money is on EV predicting that standard live use is abuse and would lead to a shorter life span, and that seems like a reasonable way for a business to keep warranty costs down.
Similar story goes that the RE-10 uses the RE-15 capsules that didn't meet spec. Consensus is getting towards thinking probably not, not in most cases. Besides, if in original state the RE-10 had a bit less top, the wrong sort of abuse of a used RE-15 might bring it to the same place now. (Tough enough to drive nails, but what I hear from those that know, abuse makes these mics lose high-end.)
BTW, the digits don't all match. The RE-10 and the PL-10 are not the same mics. And I don't think there was a PL-15. If there was, someone needs to tell me where they're hiding.
Bear
actual the RE-10s and 11s were very much up-to their required specs.
the RE-15s and 16s were capsules, that tested as very premium.
today it is mute, as when you send in a RE-10 or 11 for repair ( and request a new capsule ), it will come back as a RE_15 or 16 now matter what the number on it is ( provided we are talking about this family of mics ).
the RE-15 and 16 both use the same capsule.
the RE-16 is still in production, and all the capsule are premium, with the more modern means of production, the QC is tight, and the RE-10 and 11 have since been dropped.
the RE-11, and the P-11s are essential RE-16s
the RE-10 is like -wise a RE-15.
the PL-10 however is not a RE-15 or a RE-10, instead it is a mic of its own, and a nice one at that.