When Mojo and I discussed a similar problem a little over a year ago both on the board and in PMs the results he was getting indicated an extraordinarily low input impedance in the Axiom switching amplifiers was causing a drop in voltage when the EP600 was connected. The question was never resolved.
Yeah, this seems to match what Randy is seeing as well, and it's one of very few explanations for how a sub on one side of a splitter could affect the output level of a sub on the other side of the splitter.
Here's a question... don't balanced inputs normally have a much lower impedence than single-ended inputs ? My mind keeps supplying "600 ohms" as the answer, even though I haven't asked it the question yet
