I'm considering picking up a pair of Image Dynamics CTX6 coax speakers as
well as an ID10D4 V.3 sub which is rated @ 175W RMS. I don't think I want
to amplify the speakers right now as my stock system can get good and loud but I
need to know what kind of an amp would be good for the ID10D4 V.3. I'm
just confused as to how many channels (the sub is dual 4 ohm) and what
kind of power in an amp I would need.

The bridging of amp channels and dual voice coils confuse me so hopefully
someone can help me understand what I should look for in an amp for this
particular sub.

Thanks very much,
Don