Holy thread ressurection, Batman!
Had an idle read through this, and saw some of Dave @obbm 's handiwork. He also made my lead for this application, except I was too dumb to remember to ask for a right-angled Speakon. D'oh...
What I did ask for, regardless, was the lowest loss cable he could fit between a Speakon and a 1/4" jack plug.
The result is this: the plug is only a little thinner than the Elf it plugs into!
Quality kit, as always from Dave.