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Post by jvversions on Oct 10, 2020 1:42:02 GMT
Hi everyone! I'm new here and had a question regarding sweet spot setup. As you can see in the drawing this room isn't a typical rectangle.  I'm fairly familiar with basic acoustics and know that having as much symmetry as possible and sitting facing the short wall is the way to go. However in this room if I was to set up that way there would be a wooden floor to ceiling support beam that is 7"x7" about 6" to a foot directly behind me. This is illustrated in triangle B. In triangle A I would be facing towards the long wall but there wouldnt be anything behind me. So I was curious what the members here would suggest as to where to set up the sweet spot. Triangle A or B? or any other suggestions? Do you think reflections from the support beam would have much effect?
The room is used for mixing/production. There will be a considerable amount of absorbers going in the corners, for a cloud and on the walls. All will have at least 4" air gap- Twelve 16"x48"x6" deep and Twelve 24"x48"x6" deep. The floor is hardwood and all the walls are drywall except the longest wall which is brick. The ceiling is 8.5 feet.
Any help is greatly appreciated! Thanks!
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Post by rock on Oct 10, 2020 15:49:34 GMT
First, the post will have little to no acoustic influence but for good measure, it can be treated with something like 2" absorber. If you feel it will be physically in the way then you'll want to look at the other option(s)? 8.36 feet is the 38% distance from the 17' wall so if that post is near there, you will probably want to consider the "A" scenario, or even face the 7' wall.
If you do decide to consider facing the 17' wall also consider shifting the center between the 9' side wall which will move you about 1.5 feet towards the 22' wall. Facing the 7' wall opposing the 17' wall is not optimum but is also a possibility.
Someone else here hopefully will chime in soon but in the meantime, taking a few baseline acoustic measurements at some of the possible configs may shed some light on where your problems will be.
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Post by jvversions on Oct 10, 2020 17:54:14 GMT
Hey Rock! Thanks for the reply!
Great to know acoustically about the post, covering it with absorption is definitely an option. I was calculating the 38% if facing the 17' wall to be about 5.7' as I considered the first corner which would be behind me as 15' but I guess I should be calculating it from the furthest corner? That post is is 7.5 feet from the 17' wall so I could sit in front of it at about 6' and have a bit of room to get in and out of the chair The idea of shifting the center is also really helpful. Thank you! |
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Post by rock on Oct 10, 2020 18:26:42 GMT
Now that you mention it, both walls will each have a mode so here is where acoustical measurement will give you a better picture. Maybe your listening position will be in between those two 38% dimensions. Covering both back walls with thick absorption with spacing will help tame those modes too.
The difference between the post and the walls is that the post is small area wise. In general, it's the big things that matter, the small ones not so much. That's why we use lots of treatment; only a little doesn't do much.
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