Were all CX shells maple or were there other CX shells that were not made of maple?
Yes, all the CX, MX, and LX drums were maple, made in Mexico. The FX series was birch and also had a matte finish, and were made in China. The 2nd gen had the same mounts as the others; the 1st gen had Pearl- or Yamaha-style L-arm mounts.
Copied from my comment on an older thread earlier this year: "My Pacific CX kit
still with the stock heads from '03 sounds ridiculously better than they should; they'd still be my gig kit still if it wasn't for my falling into a kit with more trustworthy hardware for me to schlep around (not that I've ever had a hardware issue with the Pacifics)." For years, I've only played them at rehearsals, and while between bands, they've gone stretches of time unplayed- I *refuse* to change the heads while they're still sounding so good! Fellow knowledgeable drummers as well as bandmates who didn't know drums from their butts have commented on how good they sound. I think those stock Pacific/DW heads are better than other kits' stock heads, but I'd hesitate to say they're better than Remo, Evans, et al; I think I just got lucky with these. I attribute the credit to this kit's sound to the shells.