It was his binding posts the clear plastic housing that coats the binding posts (I believe for CE rating) was not letting them make a good connection when using spade lugs. When you tighten these the clear plastic makes contact and does not let the spades make a good contact. This is the reason for low output. He sent me the speaker cables and I re-terminated them with bananas and the problem was fixed.
Hope this helps!
Hope this helps!