Smoother bass by running woofer out of phase?


In my dedicated room that is furnish with bass traps, I still get to much bass energy on bass heavy music. I discover recently that in bi wiring my speakers (ML Vantage)I wire the woofers out of phase;the bass bloat goes away and I have greater detail from top to bottom. What is the explanation of this and is this a recommended "fix" in dealing with excessive bass? Thanks, Sam
shum3s

Showing 4 responses by shum3s

You are right, in that I am satisfied with the amount of bass I am getting in out of phase mode. Also there is considerable more space and dynamics. What nags me is whether or not this is the way to solve the problem. I got this idea from owning a Rel sub where they suggest in hooking up the sub out of phase which may reduce bass boom. By the way I am not currently using the sub in my system. I thought about using an EQ like Rives, but maybe I would get the same results.
My room dimension is 13x30. I have the speakers set up on the short wall. The speakers are 5 feet out into the room and 2 feet from the side walls. Listening chair is 9 feet from the center plane of the speakers. The floor is concrete with double wall construction. My ceiling slopes from 10 feet to 7 feet from left to right. Carpeted in the seating area bare painted floor in the speaker end. Perhaps then my only solution will be to applied some sort of EQ in the low freq.region. Thanks guys for your input.
From what I gather from you the experts I should wire the woofer in phase and look into finding what frequencies are giving me trouble; then use some type of EQ to take care of the bass nodes. I wonder if my wife will get me a Rives prac for Christmas? Stay tune, I will let you know how this will all work out. Thanks- Sam
The practical issue that I am face with is the fact that when the woofers are out of phase the bass response in my room is very smooth, no bloat. There seems to be greater detail in the upper frequencies. The center fill is very stable and the sound stage seems more open. All in all I like what it does, the question is, if I invest in a Prac, will I end up at the same place i.e. smooth base. Maybe I can demo one to know for sure.