so I'm thinking of getting a 15" RE SE for my bday and RE recommends 4 cubes for optimum sound. IS that 2 cubes after displacement or gross? If you use the RE box calculator and build box 38 x 18 x 18 with a 4" wide port it tunes it to 30 Hz and says 4.2 cubes. Thats net with displacement from the port correct? Would that be a good size for the SE?
Also I have a second question. Curving the angle into the port from the face, how do you do it and how does it effect your tuning? Any techniques or tips to offer? Anyone who has some knowledge on the subject of porting with curves and 45 degree angles any help is much appreciated! Thanks