mylows10 5,000+ posts
B2,singer,ampere rep
You are correct. It didn't play music very well. But still could barely it's not as easy as you think op. This build took 3 different kinds of subs and 4 different boxes before we got the score he wanted. Lesson here. Have cash ! Lots of it opI think the lesson here is that to do this you pretty much need an SPL friendly vehicle (or a really good wall) AND you'll be winning dB Drag world finals if you can pull it off.
Also I have a sneaky suspicion that that number comes at the expense of any bandwidth outside of the one peak frequency. I'll further wager than OP thinks he's going to have a daily driver that he can roll up to the lanes and see those numbers.
OP. Let me repeat. DO NOT spend any more money on this until you go to some shows and actually see what loud is like.