I am not handy with soldering irons, splicing wires whatever, just always turns ugly on me, I've no patience for it, prolly the real problem.
So even I was impressed with myself when I bought a Speakon connector to convert one end of a 3Ft, 1/4" speaker cable and found it was so easy and actually worked when applied.
It is a very easy convert. One thing I learned, if the wire ends are tinned be sure and cut that stuff down to offer good barewire ends. The tiny internal screws of the Speakon connectors were letting the wire ends slip out when kept tinned.
I had to go back and re-tighten the screws a couple times, til I was told here remove the tinned portion for a better connection. I might seem to be overthinking this but then look at me avatar here.

It's an easy fix.