Hello All, Well here is my thing. I really don't have any experience making vented boxes. All I have ever made are sealed. But I think I can build one. I need help with the exact box plans for a RL-p 15" tuned to 18 or 19hz. I need box size, number of ports, length of ports, and size of ports. I am an ameture at building vented boxes so I need the plans. If anyone could help with this it would be much apprecieated. Thank you for looking. Saul_M