Should come standard with SO 1.4 cu ft sub box
Crutchfield Customer Review (What's this?)
I used this to replace the stock terminal cup that came with my Sound Ordinance ported 1.4 cu ft cabinet because the stock cup didn't accept a standard banana plug.
Pros: accepts stock sized banana cups
Cons: maybe the plastic is a bit flimsy but it doesn't seam to effect the sound any.