thats because adire audio brahma's are real subwoofers, and kicker comps are bastard orphan step children. but 6 of anything can be loud if done right.
That is what I am saying...with a real subwoofer you can get much better results than with more cheap woofers. There are many other companies out there besides RE and DD, I was just using them as a reference.
Did you mean Fi Subs? https://ssl.perfora.net/www.ficarau...nid=1548d811d4108eb/shopdata/index.shopscript