Posted January 5, 201510 yr I have a 2000 Yukon xl I have 2 sundown audio z418 and 2 Americanbass vfl 450.1...I trying to find the right box and box size for my sub's do any body no good box size and port size ????
January 6, 201510 yr From the website... Edit- didn't transfer properly... anyways- for an 18, they recommend 7.0 cubes, 112" of port area, and tuned to 32. Edited January 6, 201510 yr by Leedogg
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