I've always loved the sound of a sealed inclosure and didn't know if the sub would work properly in one and if so, what dimensions of an inclosure would I need to build to get the best quality out of the sub woofer?
u should check the manual if it came with one cuz sometimes they have specifications for enclosures in there
u should check out ported boxes too, it makes it louder
if i were to put it in a sealed box (i wouldn't) i would go for about 8 cu ft but really if you payed that much for that bad ass sub go ported like fi says it will sound good here is a website i found with my own box problems http://www.reaudio.com/speaker_box/LPort_Box_Calc.html hope i helped later
First of all, who buys a FI BTL for SQ!!! That is NOT an SQ sub by any means. It is made to get loud not for sound quality.
The BTL is not going to perform well at all in a sealed enclosure. You will need to put it in a ported enclosure. As long as you stay in the recommended enclosure range that FI gives you will be good. I would go for a larger enclosure if you are looking for more output and deep bass. Go on the smaller side for a little better SQ or if you don't have the space.
Any way you go you are going to need a large enclosure so I hope you have room for it.