ThirstyMonkey

So I own the LD 400 bass amplifier and a 4 x 10 Ohm bass cabinet. I know that I need to connect both of the speakon outputs of the amp to the cabinet since it's an 8 ohm load. Unfortunately, the cab only has 1 1/4 input. I have to speakon to 1/4 speaker cables. My question is, can I combine the the two cables into a single jack and hook it up to the cab or will I need to have the cab rewired? Any and all advice is greatly appreciated.