Originally Posted by mjaudio /forum/post/19559235
About 6.5 cuft. for a dual opposed would give you a box Q of 0.7
About 3000 to 3500 watts would be good but if I remember correctly the LMS-R 15" is a dual 2 ohm coil so you would have a 8 ohm load.
Unless you play at ungodly levels than a Behringer EP2500 or EP4000 would probably serve you well even though the sub can take more power.