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Positioning in a small square room, compromises
Old 26th June 2019
  #1
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Positioning in a small square room, compromises

Hi All,


I'm re-purposing a small bedroom in my house for my project studio. When buying the house I wasn't able to be as selective as I wanted in making sure I had a good room for writing/mixing but it's certainly an upgrade over the literally closet-sized space in my old apartment. Most of what I do is virtual instruments and direct-in guitar so I'm not concerned about recording live instruments - just quick creativity, space to play, and mix as accurately as possible.

The room is virtually untreated and that will be changing soon. I do have some absorption panels that were built (poorly) few years back: a 16"x48"x2" Roxul behind each monitor straddling the corner and a 48"x48"x6" Roxul 6 inches from the back wall. Really no coverage in the corners, not enough thickness, I didn't understand what I was doing at the time. I've bought materials to start making better absorbers and I'll be covering my front corners floor to ceiling with 24" panels first. The old panels may be re purposed for first reflection points. But I'm here right now to talk about monitor and listening position.

The room is 10'3" wide by 10'6" long by 8'3" high, essentially a square. The front right corner has sliding closet doors (that can be partially obstructed) and the back left has the door into the room that must remain clear. I've attached a PDF with dimensions and layout options. I have a UMIK 1 and REW that I'm just starting to understand enough to be dangerous. Regardless of positioning I have some big nulls between 75 and 125hz, no surprise there.

My starting layout, was with my chair dead center on all three axes (page 3 of the layout drawings). Once I started reading about placement I found the 38% 'guideline' and started trying to realize it. You can see from page 2 of the layouts that 38% from the front wall is not really feasible with my monitor size in an equilateral triangle. So, I moved to 38% of the back wall but this leaves my active area for guitars and gear a bit constrained. I am currently using this layout (page 1).

I'm looking for folks to weigh in on how they might tackle this, or what compromises they might make, or even options I hadn't thought of. I'm not seeking perfection.


Thanks in advance,
Brian
Attached Files
File Type: pdf Layouts.pdf (14.5 KB, 26 views)

Last edited by BJosephs; 27th June 2019 at 03:22 AM..
Old 28th June 2019
  #2
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johannburkard's Avatar
Desks are not helping the sound so I would not use layout #1 in your PDF if I have an alternative. Apart from that, just measure what you have first -- or if you already have, share the .mdat.
Old 29th June 2019
  #3
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Here's where things stand right now.
Attached Files
File Type: mdat 6_28_19 Layout 1.mdat (5.70 MB, 11 views)
Old 29th June 2019
  #4
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johannburkard's Avatar
Frequency-wise, I've seen much worse here (for example my rooms). In your measurement, I'm guessing that 1 is right and 2 is the left speaker?

You have a pretty big hole between 50 Hz and 130 Hz on one side so I would try and make what's around the speakers absorptive in that region and, more importantly, make the treatment symmetrical as much as possible.

You have a very loud reflection at ~550 µs which is probably your desk? Can you move desk and speakers so that there is no reflection path? Also more reflections at 2.8 ms and 4.3 ms, probably ceiling and ceiling corner?

I would probably start looking for something that's absorptive between 55 Hz and 130 Hz and liberally apply that around the speakers, floor to ceiling.
Old 30th June 2019
  #5
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Quote:
Originally Posted by johannburkard View Post
Frequency-wise, I've seen much worse here (for example my rooms). In your measurement, I'm guessing that 1 is right and 2 is the left speaker?
Yes, that correct. I forgot to mention.

Quote:
You have a pretty big hole between 50 Hz and 130 Hz on one side so I would try and make what's around the speakers absorptive in that region and, more importantly, make the treatment symmetrical as much as possible.
Quote:
I would probably start looking for something that's absorptive between 55 Hz and 130 Hz and liberally apply that around the speakers, floor to ceiling.
I have some bass trap material on the way. I’ll be covering the front two corners first from floor to ceiling, then doing all the wall to ceiling corners.

Quote:
You have a very loud reflection at ~550 µs which is probably your desk? Can you move desk and speakers so that there is no reflection path? Also more reflections at 2.8 ms and 4.3 ms, probably ceiling and ceiling corner?
What part of the data tells you that? I’m new to REW.
Old 30th June 2019
  #6
Gear Addict
 

Quote:
I would not use layout #1 in your PDF if I have an alternative
I guess this is where the compromises come in. Layout 1 keeps me out of the middle of the room and permits an equilateral triangle. I could move my desk further from the sound path but I won’t be able to reach the keyboard from my listening position. If I move up to follow the desk my monitors will be too wide.
Old 30th June 2019
  #7
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johannburkard's Avatar
Quote:
Originally Posted by BJosephs View Post
What part of the data tells you that? I’m new to REW.
Check the Impulse tab. You may have to zoom in a lot.
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