A Little Help, Talon Raven C's: Are They Keepers?

The Raven C are a very good speaker! Some of the best bass in the business. I have had mine for over a year now and I will hold on to them as long as I can. The C are much better then the older Ravens. If you are looking for another high end bargin ans a perfect match for Talon speakers it is Edge amps. The Raven's will also play very loud unlike must high end speakers.
Here is a very good review:
http://www.thatslifemag.com/audiovideo/ancillaryspeakercomponents2.asp

Awesome speaker. Holographic, spacious, delicate, dynamic, mesmerizing.

I agree. I used to own them & would still if my listening space hadn't changed. I would not hesitate to buy them again if I had the space. I'd look at Sim, Edge or Belles SS amps if I were going to do it again.

What's the difference between the Raven C and the original Raven? Is it just the ceramic tweeter?

That is one fundamental difference. Mike has also, as usual, changed the crossover to achieve a little bit better efficiency. The cabinet is heavier as well, better braced, beefier. He usually offers a choice in binding posts too, and some improvement can be had there, too. If you are considering either the Khorus X mk II or the Raven C, you should ask about the latest upgrades Talon is offering. Different damping materials inside the cabinets and even greater efficiency with some circuitry changes in the crossovers again. A couple dB improvement, which would allow just about any amp to be coupled with the speakers. Unless you just want to go off the price charts, there aren't a lot of speakers out there that do what these speakers do.