Adding back some HF energy in my mix room.
Posted: Fri May 14, 2021 2:13 am
Hi!
I’m in the middle of treating my basement control room. It is intended to be a production room, that I can mix in as well as record vocals, and small acoustic instruments occasionally.
I’m in a relatively isolated area in Connecticut where I don’t really have to worry about disturbing anyone with my work.
The space itself is about half of an 18’x20’x8’ poured concrete semi underground basement. The builder has plywood covering 2 inches of insulation on the ceiling and three walls, the fourth wall is totally underground and has no plywood, just the bare concrete.
I have framed my half of the space inside the existing pyl and concrete. Then added insulation for absorption, which I plan to cover with fabric.
The rear wall has around 1’ of low density Johns Manville r-19 and a 1’ airgap. The rest of the space varies but the front end of the control room has 6” of r-19 with a 6” gap (including the front half of the ceiling), plus large corner “traps” which add another 1’ ish of r-19.
I’ve spent the last couple days moving everything around to mitigate speaker boundary issues. I think the bass response of the room is decent enough with my Event ASP8 speakers (though I’d like to add a sub and upgrade the speakers soon).
As you can see from the attached REW.mdat (looking at the TOPT) the HF energy in the room is below 100ms, but the low end slopes up toward 350ms.
My questions:
I’m thinking of adding slats over some of the absorption to bring some HF energy back. From around 200hz upwards I’d like to add 100ms. Will that be a good balance?
Where would be a good place for the slats? so I don't introduce new problems.
Based on the REW do you think I need more bass trapping?
Have I done anything else really dumb that I’m missing?
Thank you in advance for your help!
I’m in the middle of treating my basement control room. It is intended to be a production room, that I can mix in as well as record vocals, and small acoustic instruments occasionally.
I’m in a relatively isolated area in Connecticut where I don’t really have to worry about disturbing anyone with my work.
The space itself is about half of an 18’x20’x8’ poured concrete semi underground basement. The builder has plywood covering 2 inches of insulation on the ceiling and three walls, the fourth wall is totally underground and has no plywood, just the bare concrete.
I have framed my half of the space inside the existing pyl and concrete. Then added insulation for absorption, which I plan to cover with fabric.
The rear wall has around 1’ of low density Johns Manville r-19 and a 1’ airgap. The rest of the space varies but the front end of the control room has 6” of r-19 with a 6” gap (including the front half of the ceiling), plus large corner “traps” which add another 1’ ish of r-19.
I’ve spent the last couple days moving everything around to mitigate speaker boundary issues. I think the bass response of the room is decent enough with my Event ASP8 speakers (though I’d like to add a sub and upgrade the speakers soon).
As you can see from the attached REW.mdat (looking at the TOPT) the HF energy in the room is below 100ms, but the low end slopes up toward 350ms.
My questions:
I’m thinking of adding slats over some of the absorption to bring some HF energy back. From around 200hz upwards I’d like to add 100ms. Will that be a good balance?
Where would be a good place for the slats? so I don't introduce new problems.
Based on the REW do you think I need more bass trapping?
Have I done anything else really dumb that I’m missing?
Thank you in advance for your help!