"A word of caution: Those 12" woofers are only rated 100 watts RMS. The problem is they sound so good and distortion free no matter how loud you play them until POP! "
I can relate to that, jj....recently "opened up" the m1.0t mkII opt2 a bit "too much" in my garage system and even tho the sound was not at all distorted, when the Floyd's "Welcome to Machine" came ON, the extreme LF ripped the cone from the spyder of one of my EPI 400 tower's (old) 6.5" drivers....and these (original) drivers seem to be very scarce on ePray lately (unlike the 8" drivers): only one was listed recently and I had to pay $46 (plus shipping) to get it... On the bright side I have ~22 of these drivers (12 in a pair of "sphere's", 8 in the 400's and 2 in my daughter's A70's...).
Living room: AudioQuest Black Mamba 8M IC's from family room preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2 to Nordost 6M bi-source wires to AOS 28" MDF spherical speakers using six 8" woofers and eight 1" dome tweeters symm. arranged around the surface.
SS system: CX-995V DVD to AV-705x 5 channel amp (center/rears) & M1.0t mk-II opt2(fronts).
Garage: TLM-3600 CDP to MXR150 Receiver (pre) to TFM-42 to EPI 400 speakers.