I have a Spider II cabinet that produces 150 watts on each side. the # is (21) S2C0P5449003118. It also has the Added extra piece to sit atop it. I understand they do not make the Spider II anymore, and am trying to find out what they were originally sold for as I do not have the receipts anymore! Thanks everyone in advance. I tried looking I up on numerous pages, but they all seem to be so different.