| Don't know bout a regal but my Grand Prix seems to like 47 hz. I'm using 2 tens, and 5k with a huge slot port on driver side. 13.5H x 10W x 29L.
All my tests have shown subs firing forward and box all the way to the back to be loudest. Don't know what will work for you. Just gotta test, adjust, test some more, adjust, etc.. until you get it right.
146.8 best to date. Looking for a 47+ this weekend. |