I figured Jacob could drop a bit of info here on the upcoming SA18 that is due to be released sometime in Oct. per fb.

I'm personally interested in these as one of my choices for a upcoming build.

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Guess I didn't post that on the forums yet -- have had it on FB for a bit.

Pics of the woofer and factory production of the woofers and cones (taken from my trip to China) -- as well as T/S are attached.

Initial Info posted :
"These are due in stock in October 2014 and will retail for $299 from an authorized dealer. They feature a larger motor and spider than the SA-10/12/15 models as well as a new custom tooled high roll foam surround."

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They may be in earlier than October as well.

Frequent answers :

1) Yes it is a 2.5" coil like the 10/12/15
2) Yes I still rate it 600 RMS like the 10/12/15
3) Yes the motor is bigger than the 10/12/15 in diameter and height; this was to keep Q in check