I've used Neutrik Speakon connectors for many years, and with my 2 RELs I made cables from Canare Star Quad wire as you can cram the wire into the Speakon connector.
I have two sets of REL sub cables made from Monster Cable three wires per set into the Speakon at sub end and spades at amp end, very nice over the stock cables, have them up for sale. Contact me.
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