Oh yes Kenwood --> Pioneer --> JBL--> Focal --> Morel and then again back to JBL but JBL GTi, their flagship SQ series.
There are actually vids at youtube where people are using them as subs as well
As for 150 watts rms, There is a whole detailed 7 page Review/thread of the JBL C608GTi at DIYMA as for power handling here is what the reviewer posted.
"Sorry man, I have not run them active. No means right now to do so, really dont have a need either. But I am running 400+ per side with the passives...... They laugh at me"