Hey a Pittsburgh member. :wave:
To answer your question, the non-JBL models which the SR5 is has 6 speakers. 6.5" in the rear doors, 6x9" in the front doors, and a .75" dome tweeter also in the front doors.
The JBL models have 10 speakers, which is the ones listed above, as well as tweeters in the rear where our mirrors are, a subwoofer, and a center channel tweeter. Those speakers are also amped where the non-JBL speakers are not.
I have a set of 6.5"s and 6x9" Alpine Type-S's, and a set of Audiobahn 1" dome tweeters that I'm looking to sell, which are great factory replacements. Let me know if you would be interested since i'm local.