What cabels do I need??

Thanks for the reply Super, but what you replied to in my "Will an amp significantly alter box volume??" thread, was #1 and not #2 as you had mentioned. To answer my own #1 question, I believe it's recommended to wire (solder? or spade?) the voice coils in parallel and connect (solder? or spade?) the pos/neg wires to the corresponding locations on the amp.

As far as #2 goes, what benefit does your wiring method have over simply connecting the receiver sub-out to the left amp jack
with a basic RCA cable?