Posted March 6, 200718 yr well the first comp of the year is happening up hear in ut. and just looking for some tips. I was also wondering about buiding another box for a BTL18 with only the cooling opt. If I was to do this then it would be a crx style and the dementions would be 36X22X28 and would need help with the port to get it tuned to 36hz. the box I have now is 36x33x18 tuned to 32hz. any input would be great thanks guys. Also this is being pwered by a exile 2400.1 this is still in the 72' bug hope to have the 200amp alt by thenMC Edited March 6, 200718 yr by mcbuggin