Thinking the exact same thing. I have 1 shiva in my home setup run off a 350w plate amp in a 5cu ft enclosure tuned to 16Hz. It has great articulation and a very very nice low end. :thumbsup
Looking for a 10" for a sealed home DIY system myself. Seems like any affordable speaker I can find rolls off at about 46 Hz according to WinISD. Wonder why that is?