I used them for about 4 months to reinforce 80-160hz upfront under my driver and passenger seat. They do a fantastic job at filling in the weak areas of your door mids between 50-200hz. The most power they’ve seen is 75 watts.

While i was impressed with their performance and help in bringing bass up front, I chose to use my last two outputs for rear fill instead

JBL Fuse

$200 shipped in the lower 48