1x fi spf4 18" on a 4500 watt crescendo amp. SUBWOOFER BOX QUESTIONS

[magillaru]

Didn't read through all of this but you should've gotten some good info from the members that posted in here. Just came into to say, DO NOT put that sub in a sealed box and if you have the electrical to back up that amp, put it in the smallest recommended enclosure. Without getting into the science of it, you're going to want less air space with that power. Good luck!