2. misc-audio
  3. 1007874054

How do you improve bass response in a null?

My listening postion on the sofa is unfortunately in somewhat of a null, thereby reducing bass reponse. Since I use the room for both 2-ch & HT, I like my position to be centered on my 53" RPTV, which by necessity has to be centered on the front wall.

How does one reconcile optimal sound with optimal viewing angle? If I were to move my position on the sofa, I'd have to slide both speakers in the same direction in order to stay centered between them. While doing this, it would upset the balance for home theater, not to mention having one of the speakers blocking a portion of the screen.

Is there a simple solution to this problem that I'm not realizing. If the centerline of my room is a null zone for frequencies around 40hz, would moving the sub have an effect. Or is this room location always going to be in a null zone regardless of the sub's position?

Anyone got any theoretical or practical experience with this problem?

Thanks.
kenl

Showing 3 responses by kenl

kenl OP
131 posts
 
Dbwl,

I read a past post of yours where you heartily endorse REL subs. You've given me food for thought. I'm thinking that the REL might augment the bass better than my current M&K sub. Do you think it's more a matter of location or brand of sub? The M&K has plenty of raw output, but may not integrate as well. Does integration have any bearing on spl level?

Sean,

As you suggest, I've thought about moving the sofa farther back, but then realize that the TV picture would become smaller. However, this might be an acceptable trade-off. It's easy enough to try. I'll let you know the results.

Sdcampbell,

The sub is currently located on right front wall about 3-4 feet from the side wall. Corner location would interfere with a closet door on side wall. I've heard that while corner placement provides more bass reinforcement, it also can add to boominess and standing waves. But as you suggest, maybe I just need to move it a few inches.

In the past I've moved my seating position a few inches, and it never has made a significant difference. Is this the same as moving the sub's location?

Thanks to all for your input.
kenl OP
131 posts
 
Dave 1,

Very creative solution. Unfortunately my sub's phase is already set for maximum spl. If I reverse phase, it will make the null even worse. If my sub were set out of phase, then your solution would be a good one.

Thanks for your advice though.

Ken
kenl OP
131 posts
 
Doug,

I've just ordered a REL Storm III. In addition to it I'll have a Velodyne HGS-18 & M&K MX125 with dual 12" drivers. What would be your suggestion for using either of these 2 subs as the 2nd stereo sub in addition to the REL?

The Velo can be connected via high or low inputs, while the M&K is limited to low level only. Or should I just connect all 3 and run them in concert?

Thanks,

Ken
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