For spring terminals, you would use a banana plug with a flex pin that can go in there. It is FAR more common to use bare wire, but if you are going to use a banana plug, you will want one with a flex pin that can go inside that spring terminal.\n\nhttps:\/\/sewelldirect.com\/collections\/banana-plugs\/products\/silverback-flex-pin-connectors-for-spring-loaded-inputs\n\nYou might want to spend some time reading and asking questions at diymobileaudio.com as well. They ARE into exactly this.\n\nFrankly, every time I see Skar, I wonder how they stack up against JL Audio. I have a JL 12W7 and it really does blow me away.\n\n\nAwesome thanks for both the connector recommendation and the diymobileaudio site, I have some questions about distribution blocks and other stuff, will post it there.\n\nI heard Skar is very low-end, and I heard Great stuff about JL Audio. I went with Skar audio for the sub and Alpine for the front, rear and amp. I wanted a KICKER 44VL7S122 12" but Skar is having a sale right now and I'm on a tight budget.