Don't worry, man. Me too when I first started playing with them. The differences seem very subtle until you have a few of them in your hands and then it becomes apparent. The motor on your driver has the steel parts from a TC9 but it has three slugs. So what do you call it, right? That's why I began a thread in search of some answers pertaining to the elusive "TC9+" and learned that it doesn't even exist. By the end of the thread, Kyle assured me that regardless of how many slugs, if it has a 12mm top plate it's considered TC9. There just happens to be many variations on the TC9. I searched all the archived pages for TC Sounds and never once found a single mentioning of a TC9+ but you hear lots of people using that nomenclature. The biggest problem about finding info on motors (or anything else, for that matter) is that people with absolutely no personal experience are all too quick to chime in with their "expertise".**** TC subs gets me confizzled. The motor on my sub is supposedly a 3hp, but has a diff bottom plate of those in the pics above.
Pic below. 3x .75" slugs, from an early rl-p: 3hp or tc9???
http://www.caraudio.com/forum/subwoofers/441282-show-me-tc-9-a.html
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