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barabus 10th June 2020 04:03 PM

Room measurements - what bass trap to use
 
6 Attachment(s)
I've just moved into a new house and finally have myself a home studio to work from and now find myself in the rabbithole of acoustic treatment. From researching it seemed like the most pressing first step was to measure my room.

As far as I can understand the biggest problem areas are the 100-150Hz and 300-600Hz regions when looking at the SPL average between L and R. And between the 2 speakers - large descrepancies at 220Hz and 1kHz. Could that huge peak at 121hz be something to do with the height of my room being about the size of that wavelength at 287.5cm high?

I've been reading about broadband absorbers and superchunk traps and ideally superchunks sound like they are the way to go. However as you can see from my room dimensions there is only really 1 corner that I would be able to fit one that even approaches the size required to be effective. Although less effective, does anyone reckon that 6" thick broadband absorbers could work well on the wall in front and behind me? Namely something like these...?

Kyle P. Gushue 10th June 2020 05:26 PM

Have you tried orienting the speakers so they fire down the long dimension of the room? This in general (not always)yields a smoother bass response.

Remember you have corners around the entire perimeter of the room at the wall/ceiling junction which can be treated while not eating floor space.

dinococcus 10th June 2020 07:45 PM

Quote:

Originally Posted by barabus (Post 14792073)
I've just moved into a new house and finally have myself a home studio to work from and now find myself in the rabbithole of acoustic treatment. From researching it seemed like the most pressing first step was to measure my room.

As far as I can understand the biggest problem areas are the 100-150Hz and 300-600Hz regions when looking at the SPL average between L and R. And between the 2 speakers - large descrepancies at 220Hz and 1kHz. Could that huge peak at 121hz be something to do with the height of my room being about the size of that wavelength at 287.5cm high?

I've been reading about broadband absorbers and superchunk traps and ideally superchunks sound like they are the way to go. However as you can see from my room dimensions there is only really 1 corner that I would be able to fit one that even approaches the size required to be effective. Although less effective, does anyone reckon that 6" thick broadband absorbers could work well on the wall in front and behind me? Namely something like these...?

Hello,

You don't have the same response between L and R. Before the bass trap , the issue should be treated.

barabus 12th June 2020 12:49 AM

Quote:

Originally Posted by Kyle P. Gushue (Post 14792230)
Have you tried orienting the speakers so they fire down the long dimension of the room? This in general (not always)yields a smoother bass response.

Unfortunately I can't really orient the room layout any other way as it is quite small and I need as much space around me as possible for instruments, etc

Quote:

Remember you have corners around the entire perimeter of the room at the wall/ceiling junction which can be treated while not eating floor space.
Interesting, that never crossed my mind. What thickness of panel do you reckon would be effective over those spots? Do you reckon 100mm or about 4" would be sufficient for the problem frequencies in my room?

barabus 12th June 2020 12:51 AM

Quote:

Originally Posted by dinococcus (Post 14792510)
Hello,

You don't have the same response between L and R. Before the bass trap , the issue should be treated.

I'm guessing the difference is primarily due to the right speaker being near a corner?

dinococcus 12th June 2020 06:57 AM

Quote:

Originally Posted by barabus (Post 14795194)
I'm guessing the difference is primarily due to the right speaker being near a corner?

The two speakers are different in all the bandwidth.
Have you calibrated your speakers?