I have a smaller led TV in my bedroom that has terrible sound. I want to hook up some old bookcase speakers I have to help with that problem. The TV has a headphone jack and a SPDIF jack for output. I have an old Realistic amplifier (SA-150) that I was hoping would help power the speakers. I think I have the hookup from the TV to the amplifier figured out, but the output from the amplifier only has a left and right RCA type connection. My speakers are the type that have black and red clamps. How do I finish this connection, or can I?