A little quick update on my crude testing of the XTi2000 and 4000 with TC Sounds TC3000 and LMS-Ultra(both in sealed 3cu ft cabinets).
Today I really pushed both amps driving these very capable sub drivers to the point clipping lights flashed!
The XTi2000 was driving one TC3000 15(one channel in use,no bridge),it gor seriously loud and the driver's cone was moving some serious air,the clipping lights came only on passages where bass in the 20-30HJz was making the cone move what was like 1.5-2inches of excursion! The amp was on a 30A line,not lack of current here.Keep in mind one channel was driven.
With the XTi4000 the clipping light never lit or flashed,it was very loud...again the driver's cone doing serious pumping. When it was time to let the LMS-Ultra work,I made the clip light flash faintly again when the cone was what looked like ~2-2.5inches of excursion.
For what these amps will be used,I will not even push them half as hard. So they pass my primitive test.
Then for fun I tried the test with my QSC PL380 and Crown iTech6000...HOLLEEE These amps are monsters,both could push the drivers into monster excursion and where the walls came alive with their own excursion!
The iTech and PowerLight are the real deal in my view.
For something like a Acoupower,TC2000/REVO and up,SDX15 I woulpd recomed using a QSC PLX2 3000+ series.Not the XTi's
As most here have one or two subs and use them in much larger spaces than my 700 "cabin" .