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Trying to maximize bass response ......

I've a system set up on a 13x19x9 ft room and have optomized set up (considering all of the variables and domestic no-no's). Referenced to a 1k and 200k tone using a Stereophile disc and RS meter, I have a fairly flat response to 32hz and a sharp fall off thereafter EXCEPT for a sharp dip at 50 and 40 hz (8 and 6db respectively).

I would like to fill in the 40/50hz null and would consider filling in the bottom octave by using a sub if it wouldn't end up with a sharp increase at 32 hz.

BTW the 40-50 hz drop out is definately room related - its there with panels and cones and pretty much independent of set up on the short wall and location of listening position. Long wall set up is not an option.

Any suggestions will be appreciated including those suggesting that I should just forget it and enjoy what I've got.

TIA
newbee

Showing 1 response by newbee

newbee OP
4,794 posts
 
The RS meter is not accurate in the lower bass frequencies. Usually it measures low in a curve moving up to flat at or above 100hz. I have a correction chart and I've also used the Rives disc corrected for the RS errors. The dip is still there.

Actually the speakers sound excellent as situated - the bass is excellent without correction but I think it could be improved a tad, especially in the 20's and 40's. The 20's I know I would hear, but I'm not so sure about how much some lift in the 40's would help. I sure don't want boomy bass from too much energy in the 30's. The speakers presently subordinate themselves to the music so I'm leary of changing the balance by inserting a sub if I need to use a cross over.

I probably aught to give it up but I hate to stop so close to my 'audio goal'.
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