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Suckout at 40 hertz...less pricey solutions?

Can bass traps or other room treatment help with measured 40 hertz bass suckout?

Problem is my listening room is almost a square.

My speakers Have powered woofers and try as my speaker dealer has to dial in the speakers he could not eliminate the 40 hertz suckout without making matters worse

my four walls and ceiling have absorption material and the ceiling is not flat nor low. It's a sloping ceiling 9-12 feet

I could massage part of the problem by adding an additional powered woofer to the speaker . The upgrade to my model is designed to have a powered woofer On top and bottom.

Cheaper of course would be room treatments

most expensive would be knocking out a wall making a rectangle but that in my converted garage would be the most pricey!

Any thoughts

thanks

mike

ps. Room sounds good but would like to within reason maximize potential of my excellent equipment
radioheadokplayer
shadorne's avatar
shadorne
7,333 posts
 
Agree with Ojgalli - your only viable option is to get a subwoofer and position it a little way forward into the room and then EQ it with notch filters so it does not add to the speakers peaks.

You need an enormous amount of acoustic treatments or a specific designed helmholtz resonator to have any effect at 40 Hz.
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radioheadokplayer OP
173 posts
 
Thanks for the responses

my equipment is on the 9 foot side and am listening near Field on the 12 foot side. Both speakers and chair are amply away from any walls. I will find out info re how deep the null and where peak is

mike
drew_eckhardt
394 posts
 
1. Play with listener/speaker placement since nulls can cover small spaces. I got rid of the one noticeable suck-out in my current room by moving my seat six inches forwards. Try slightly asymmetric setups - sufficient speaker directivity, side-wall spacing, and toe-in can avoid image shift. I've had very good results from two asymmetric rooms with my Linkwitz Orions, and one failure on stand mounted monitors in my home office with book shelves on one wall where I had to use stereo tone controls as a band-aid.

2. Use multiple sub-woofers.
hifitime
715 posts
 
Are the woofers side firing (side mounted)? If they are, try switching them with each other so the woofers will be on the opposite side.If they are, this might fix the problem.
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