yeah i was talking about the box build one lol. i had posted the wrong one in the previous post. and thats fine if it dosn't count, im sure there will be another contest in the future.
most 4th orders are used for burping because you can build them to get loud at a certain frequency, but i would not recondmend them for a daily setup because they are very peaky.
example: it might play 35hz very strong but anything over 45hz will be very quiet. bandpass boxes are known as "one note wonders" which means you will hit like 1 out of 5 notes in a song.
i use to have an alpine type-r 10 in a 4th order and it was alright, but then i build a t-line for it and it was a night and day difference plus it got just as loud.