Hi,
I want to build a cabinet for a single JBL2245. This page from a JBL enclosure guide is confusing to me. Could someone tell me how to read the duct info for #11 (a single 2245 cab)? I don't understand the Equivalent duct tube and ID column. I understand that ID is the inside diameter of a tube, but what is the number in parentheses?
Thanks, Dan
Here is the page:
Page01.pdf