That sub arrangement can certainly work though many times I have seen it cause issues at other frequencies. You know, by getting rid of one thing another pops up that was being cancelled before. As always, just have to play with it.
You will have issues in the height dimension. 2 4" thick panels spaced down 4" from the ceiling over your head and at the ceiling reflections will help. Try some also centered on the wall behind your seat.
I would agree you are hearing too much bass so mixing it down.
Also, I don't see...
Sorry. Late to the party.
Passive treatment can certainly work IF it is the correct type and in the correct locations for the problem to be addressed. Corner traps won't do much if the problem is from the rear wall or a length mode for example. Active can work (EQ) as long as you are EQing...
sorry for not being around. So, I didn't see a recent measurement with the 80Hz xover and the mains set to small and along with the sub. Am I just missing it?
One other thing to check.... Do just the left, then just the right, then both together. Any differences between the singles and the pair is an interaction between the 2 where spacing may help. Or introduce a null that coincides with the peak to help smooth things out. I agree with DD that...
Well, that's personal preference. For pure HT, one would cut off LCR and all surrounds at 70-80 Hz then fill in with a sub. I suspect he is getting SBIR from the front wall and the mains. You wouldn't get that from surrounds that far away. Or if he wants to go thicker, just move the mains...
Agreed but in a multi-channel setup, you want to block reflections from the surround channels coming off the front wall. Doesn't need to be really thick. You can make it thin enough to avoid the suckout in most cases.
a few questions.
Can you post a waterfall with 5db gradations along the left side and 300 ms depth please.
Room size, seat location, sub location?
Are you cutting off your mains or overlapping them with the sub?
Couldn't agree more. Just understand 3 things to address:
Frequency response
Decay time
Early reflections
.... And reflections don't always have to be absorbed pending the frequency range in question
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