Optimizing my 4 subwoofers

[VJM]

I recently added two more subwoofers (All 4 are SVS SB-3000) to my theater and now I'm wanting to tweak the setup to get the best results and I'm open to help/suggestions.

Dedicated enclosed theater room is 21.2 L x 11 W and 7.2 H

I'm using Audyssey MultEQ-X and have tried different places for the subs and these are the first measurement from the MLP about 10.5 feet from the front speakers.

Four corners of the room..

Mid-Subs, both subs collocated at front and back mid-points...

1/4W Placement

Right Front collocated and back left collocated

This last one is the aggregate response after measuring all 8 locations for the four corners configuration, I can provide the other aggregate readings if someone wants to check it out.

 

[Sonnie Parker]

It will be extremely difficult to come to much of a sensible conclusion if you are measuring eight different positions. There will be some give and take you'll have to live with. If you fix one position, you end up creating an issue for another position. In this case, I think you are probably best trusting Audyssey is getting it about as good as it can get if measuring eight positions. I always try to optimize for the primary listening position to know I have one excellent seating position. The compromise is the other seating positions, which still sound pretty good and about as good as if I had measured all of them. Of course, I'm usually the only one in my room for the most part... and when others are in there, especially kids, they could hang on the ceiling and think it sounds good. If I want to impress someone who understands it and can really hear a difference, I let them have my seat.

 

[socbutter]

Are you asking about where to place your subs? If that is the case, Ive found it easier to place the sub in my MLP and using REW and placing the mic in various locations while taking sweeps at those locations. I think is called reciprocity.

Else you could use Obsessive Compulsive Audiophile video Optimal Subwoofer Alignment with Cross Correlation . Be patient in listening and perhaps turn on Close Caption. hope this helps.

 

[MusicManLen]

If possible add 4FT to the distance found by Audyssey to each sub. You can't have more than a 20 FT separation between subs and shortest speaker distance in Audyssey so you might have to adjust the shortest speaker to keep the 20 FT difference as required by Audyssey. Write down the subs distances and any other speaker distance you might have to adjust before making any changes so you can easily go back to your original distances if you don't hear any improvement to your bass. In my room with (4) subs it made a powerful improvement to my bass and in my case I had to add a couple of feet to my shortest speaker to keep Audyssey happy. You don't have to rerun Audyssey as you make the changes in the manual settings after you have already run Audyssey. Hope this helps.