Studioproject; thanks for the compliment; our goal with the whole Axiom line is neutrality. This sub was wired with an XLR connector from the pre-amp to the sub and the sub x-over set to 60Hz. You could use the RCA or high level into the sub and it would work the same. The problem with a receiver sub out is that it tends to shut off in the stereo mode. This is actually a bug in the Cirrus chip but that is the chip the majority of receivers have.

Ian Colquhoun
President & Chief Engineer