Hey I'm new here needing ome help. Can someone help me out and throw me a good design for my new sub? It's a sundown 15" zv4d1. I have a ford explorer. My amp is a dd m2b. I'm thinking maybe 4 cubes tuned to 30 or 32. I'm switching up from a dd9515. I have someone who builds awesome boxes but wants a design so he can get it done for me tomorrow. Thanks