What's your requirements for a speaker? What drew you to the Gemini 2?
Not a fan of the Gemini 2, which commits a speaker design booboo by placing two full range coaxial speakers next to each other. You'll get a narrow horizontal, wide vertical directivity which isn't useful, and more harmfully, have phase issues resulting in comb filtering at higher frequencies. It's 62 lbs with two class D 110W amps, which means it's really heavy and yet probably fairly lacking in volume and headroom... what were they thinking? And one strap handle, good luck carrying it.
Oh, and apparently the cooling fan is really loud by all accounts, you'll have to pay $300 more for a heatsink option.
If you don't believe me on the speaker design thing, perhaps you'll believe this credible explanation:
http://usa.matrixamplification.com/faq/stereo-and-frfr.html
If you really need the USB and Bluetooth functions, I guess there's nothing else. But as a speaker, you don't get a lot for your money ($1500! Or $1800 for heatsink!). You're better off getting two great speakers.
Based on this speaker, I wouldn't go to Mission Engineering for speaker needs. They either don't know what they're doing, or are willing to sell a bad product cus it seems good to unknowing eyes.
If you
need to have stereo in one big box, Line 6 Firehawk 1500 seems to be a somewhat better implementation of this idea.
If you're looking for coaxial designs, there's Xitone, Matrix, Atomic, RCF NX 12, Dynacord AXM 12, etc., lots of good options people recommend on this forum.
If you want stereo, just buy two speakers. You could buy 2 great PA speakers and use it as your personal stereo FRFR amp, maybe something like Yamaha DXR10's. And two smaller speakers are way easier to manage than one big one.
By rule, if you're sending signal to an FRFR, you should not mic the FRFR but rather send the same signal for live sound or studio use. But if you insist on mic'ing, coaxials are better for this, something to consider.