Genuinely curious why you're tuned to 22hz?
A lot of people ask me this lol. I did it for sound quality and I also slow down most of my music. I go more for SQ than SPL but where I have the box positioned in my trunk I can literally play anything from about 22hz -mid 40hz. I sound like I am peaking around the 29-32hz range and those are my favorite freqs to listen to music at. I just have to upgrade my subs to more SQ oriented subs lol. For now, I love the SAs.