24 Jul
2014
24 Jul
'14
8:59 a.m.
Hi Gabbe,
To my understanding this would have a positive effect. There are actually
some commercial products that are designed "your" way. But
בתאריך 24 ביול 2014 09:21, "Gabriel Nordeborn" <gabbe.nord(a)gmail.com>
כתב:
Time to revive this old thread... Thank you for all of
your messages and
thoughts! After what feels like ages, I finally have time to start this
project for real.
A question about low frequency absorption/bass traps:
- One of the best ideas I've seen around for doing DIY bass traps is to
cut triangles from the rock wool, and then place the triangles in the
corners, from bottom to roof. I won't be able to do it that way just yet,
BUT, I wonder whether it would be an idea to just stack rock wool panels on
top of eachother in the corners, and achieve at least some low end
frequency absorption? This wouldn't cover the entire area of the corner,
but would still make some I guess. My monitors are very small and don't
produce a lot of low end, and I won't be recording a lot of bassy stuff
either, so maybe this could suffice as a starting point? See image attached.
Thoughts? thanks again for all the info!
On Sun, May 25, 2014 at 10:07 PM, Moshe Werner <moshwe(a)gmail.com> wrote:
Hi,
I recently moved to a new flat, and I've just got my studio properly
setup in one of the rooms.
Congrats! I hope we get a lot of your beautiful music out of this room:)
Problem is, the room is rather horrible
acoustically. As this is the
room I've got to play with, I'm going to have to make the best of it
acoustically.
So, my question is about DIY acoustic absorbers. I'm most likely looking
to build absorbers both for mid/hi-end (I'm thinking the classical rock
wool ones you place spaced out a bit form the walls) and for the lower end,
but I am very much open for suggestions. Here's some specs of my setup:
- The room is roughly 3.60m wide, 3.40m long and
2.50m high. I think at
least one wall is concrete.
As first step I would consider to mix facing the narrow side of the room
Plus always keep everything nice and symmetric.
Also I would recommend to measure the room to see what problems you're
dealing with. http://www.roomeqwizard.com/ is available for Linux AFAIK.
- My mixing position/monitors is in the middle of the front wall. I sit
about 1.20m out from the wall.
Have you heard about the 38% rule? If not read up on this
http://realtraps.com/art_room-setup.htm, also covers early reflection
points.
- My monitors are small, a set of Adam A3X (so
3" elements I guess). It
basically gives very low bass response, so I can hear fairly OK down to
about 80hz, rapidly declining down to 60hz where there's nothing left.
Less low energy buildup, but as you mentioned you won't know whats down
there so I would recommend you to treat for lower frequencies in case you
upgrade your speakers in the future.
- I am not terribly dependent on mixing at high
volumes, if that matters.
It matters a bit as there is less energy to be absorbed, but again I
would treat properly just in case you want to listen with higher SPL's, so
it doesn't totally change the EQ of your mix (anyway it will change with
sound pressure level because of equal loudness contour
<http://en.wikipedia.org/wiki/Equal-loudness_contour>)
What I currently have is:
- Two large bookshelves along the wall right behind my mixing position
acting as diffusors. These go almost all the way up to the ceiling, and has
stuff unevenly stacked at different heights/positions in the bookshelf.
They cover 1.60m in the middle of the back wall.
I've got good experience with bookshelves in homestudios, given they
aren't to close behind the listening position.
- I also have a fairly large carpet on the floor
in the middle of the
room. It probably doesn't do that much, but maybe it does a little.
It does a little in preventing flutter echo of high frequencies.
My question then is; are there any effective ways of acoustically
treating this room? Of course, given the topic of the e-mail, I'm very much
willing to do my own DIY solutions, if that's a viable option. What I have
been thinking is doing what I mention above; classical absorber "panels",
and bass traps.
I would treat the corners and early reflection points first.
In a homestudio of a friend we filled the corners with rockwool made a
wooden frame and covered them with fabric.
Early reflection points can be treated with 10-15cm thick "classical
absorber panels".
For our live room we've done something else, we made wooden slat covered
frames and filled the cavity with rockwool .
I like what it does to the room as it doesn't make it dead but tames the
response quite nicely.
But, before I start anything, I'd very much
like input from people who
actually know what they're talking about (I'm looking at you on this list
;) ). So, does anyone have thoughts/suggestions for me? Any recommended way
of doing this?
Thank you very much for any help and any replies!
Best of luck!
Moshe