what you need to do is figure out how big of a box you want, 2-2.5 cuft would be quite sensitive for that woofer and allow to play much louder per watt. you then design the port needed to tune it to your desired frequency. after that, you take whatever area your port takes up and add it to the 2.5 cuft. then you have your total box volume.

if you have 3.7kw, what amps btw? not sure how you get 3.7kw. but that's about the right amount of power for 2 12" BTL's from fi. BTL's are very efficient woofers, and can take a beating for daily use. effiency means that these woofers can get very loud per watt compared to most others. so IMO, if you want something louder to bang the lows, then go ported with higher-end woofers. 5 cuft box after port and displacement for 2 12" BTL's tuned to ~32 hz for daily would be a great setup. if you mostly listen to rap when you are streetbeatin, then even a 34-35hz tune would gain you a little volume.

what you need to do is figure out how big of a box you want, 2-2.5 cuft would be quite sensitive for that woofer and allow to play much louder per watt. you then design the port needed to tune it to your desired frequency. after that, you take whatever area your port takes up and add it to the 2.5 cuft. then you have your total box volume.

if you have 3.7kw, what amps btw? not sure how you get 3.7kw. but that's about the right amount of power for 2 12" BTL's from fi. BTL's are very efficient woofers, and can take a beating for daily use. effiency means that these woofers can get very loud per watt compared to most others. so IMO, if you want something louder to bang the lows, then go ported with higher-end woofers. 5 cuft box after port and displacement for 2 12" BTL's tuned to ~32 hz for daily would be a great setup. if you mostly listen to rap when you are streetbeatin, then even a 34-35hz tune would gain you a little volume.

long time ago but ok i have made the port about 9" longer and now it hits decent low notes with my kicker comp in it

how do i get 3.7KW RMS with an MTX92001 soon i'll get another one

but now i'm saving for some AA Mayhem 15's so you can close this