My main concern is actually how to avoid spaghetti in the rack. I know how to wire the cable I just don't know how to keep everything looking neat and tidy. So far as I can tell the only way to do this is to mount a rack panel with two 8-pole output jacks to the rear of the rack, behind the amps, and wire the respective poles from the banana jacks on the amps to the poles on the retrofitted jacks. I have not seen these offered for sale anywhere as complete kits so either people who do triamping with a single 8-pole Speakon cable all do their own custom rack panels or there is an easier way to do this that I am missing. It sounds like I would have to splice the 8-pole cable and put on 3 different Speakon ends to plug into the amps from what you are saying.

Are there any pics posted anywhere that show the physical wiring of a triamp setup going into one 8-pole cable? Are there any type of junction boxes or Speakon patch bays that can be used? If there are I haven't found them or perhaps I am not using the proper terminology. I am genuinely embarrassed I do not know how to do this.