What is the recommended volume for the 12" BTL? I just met a guy locally that can build an enclosure for me but I couldn't find this info on the website. Most likely going ported as it is an SPL sub,.. maybe around 32hz? It will be in a 2004 mustang and the btl might be inverted to save on space, but I will try to fit the recommended volume and port tuning. Thanks for the help guys.
