Hi Steve, I’m sorry to hear that you are having difficulties connecting your speakers with an RCA-to-HDMI converter. So that we can better troubleshoot towards a solution, please reach out to Samsung Support at: 1-800-SAMSUNG (ask for TVs), available 8AM - 12AM EST, 7 days a week, or Chat with us on Samsung.com: https://www.samsung.com/us/support/contact/ ^Gina