I think we (Agon posters) should start the new year on a higher note (😉). So often , answers to an OP’s question are used simply as a vehicle for expressing all that we think we know about a topic without addressing the most obvious and easiest things that should be part of the dialogue with the OP. Only a relatively small percentage of the respondents have asked of the OP, if only in an indirect way, the obvious questions/suggestions: “Have you tried lowering the output level of your sub?”, “If so, what was the result?”, Have you tried lowering the XOVER frequency?”, “If so, what was the result?”. So, OP, what say you?
