A great, inexpensive banana connector is from a company called Knukonceptz and they're sold on ebay in sets of four for $2 each. They're gold-plated beryllium copper, have two set-screws per terminal and are the BFA-style that give you a lot more contact area than standard bananas. I've used quite a few of them for DIY speaker cables and been very happy with the quality and how easy they are to attach or remove. The weird name makes them pretty easy to find by doing a search on ebay.
And a good, inexpensive cable is Canare StarQuad, model 4s11 if you need big conductors, 4s8 or 4s6 if you don't need to pull as much current. Available online from places like markertek.com.
And a good, inexpensive cable is Canare StarQuad, model 4s11 if you need big conductors, 4s8 or 4s6 if you don't need to pull as much current. Available online from places like markertek.com.