I had a 70hz hump with my Axiom M80 speakers in my listening room which really gave me a bloated sound .I moved my speakers to every possible position to no avail.I attempted to correct this problem with two quite expensive AudioContol equalizers.Again, nada.I was extremely frustrated at this point and was seriously considering to (gasp)sell my Axioms.
Then I was saved by the cavalry.I read about a DBX10/20 equalizer that uses white noise and mike to auto equalize speakers to match listening room and listening position.The problem was that DBX stopped making them in the early 80's.Being persistent by nature I purchased a used one of Ebay and have been listening in bliss since.
