Large banana plugs for 10 awg speaker cable

Hello. I have a Parasound HCA-1200 power amp. The holes in the speaker posts are too small to for the 10 AWG speaker cable I am using. I have tried crimping the wire, wrapping it around the post and it is just too large. I have tried standard size banana plugs and they are too small. Can anyone recommend a place where I can get large size banana plugs that will accommodate 10 AWG speaker wire?

Thanks!