John Sayers' Recording Studio Design Forum

stuart.

I know what you mean and I agree. modes are modes and will stay modes.
but I think I'm not able to properly articulate my thoughts.
last attempt and for the sake of completeness:

this is a simple copy of the figure I mentioned in my last post from f. alton everest's master handbook of acoustics, fourth edition, page 283, fig.13-10:

on the left side you see the 1,0,0 mode in a rectangular room (5 x 7 meter)
on the right you see the same 1,0,0 mode in a nonrectangular room of the same area.

the sound field is distorted. now imagine what this may look like in front of a soffit wall?!?!
wouldn't or couldn't that eventually solve my "speaker is in a null" problem?

who knows...
anyway.
I should stop my guesswork.

thanks for your patience,
carsten

Regarding room modes and speaker location in your room, the speakers will be NEAR the 2,0,0, mode, not right on it. In addition, the non-rectangular splayed walls of the speaker walls will shift the location of the modes. It will be fine as you are proposing it.

Andre

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Good studio building is 90% design and 10% construction

I replied in the thread. You are in good hands with Stuart and the others. Good luck and enjoy your studio!

Andre

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Good studio building is 90% design and 10% construction

Andre,

thank you very very much!

carsten

hey folks,

just a short one:
I'm alive and building...
the ctrl room looks great and sounds good. a little too dead imo. but i'm not finished at all...so let's hear
what will happen in the following weeks. piccis will follow when I found my camera.
two major issues:
@ ~ 50 hz
@ ~ 115 hz
the 50 hz is something i don't know where it comes from. it's from somewhere in the building. maybe
an air compressor... it's not from my system! i can still hear it when all my stuff is switched out.
i have no clue. it's not too loud but annoying the closer one comes to a corner.
the left corner/rear wall seems to be the spot with highest pressure. you can't really see it on the
graphs and it seems that it ain't a big problem but it is really really annoying to sit and work
in a substantial tone. (i haven't heard it until i build the rear wall with metal studs, 10cm rockwool
and two layers 12,5mm gypsum)

whereas at the right corner/rear wall 115 hz has an enormous pressure. and this ~ 115 hz is a major peak @ the listening
position.

so my plan is to use a slot resonator for the 115 hz hidden behind cloth (right corner/rear wall)
and a panel trap hidden behind the murder chunk in the left corner/rear wall.

is the slot resonator a good idea?
it has been said that one should avoid reflective parts at the rear wall especially in a small ctrl room like
mine (length roundabout 435cm - 455cm). i thought fabric on a frame in front of the slot resonator might
tame the reflections...or am i wrong?

the cloud isn't installed and no fabric. just rockwool behind thin plastic foil.

measurements were made with room eq wizard, motu 828mk2 and a behringer ECM8000 mic

piccis will come!

thanks,
carsten

me again =)

i found some older piccis.
enjoy.

don't forget to read my question in my previous post concerning slot resonator in rear wall
covered with fabric...

thanki you
carsten

here are two montages of my ctrl room as it is right now.
still looking for a hint 'bout my question in the pre-previous post.

cheers,
carsten

That is looking great! A covered slot resonator should be fine for what you what acoustically.

Andre

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Good studio building is 90% design and 10% construction

thank you very much, andré (with an e or an é?)!

great.
than i can go ahead.

carsten

Carsten,
I have been watching and waiting for you to get on with the finish work. Your famous door hinge router job told me this was going to be a nice finish job when all was said and done.
And it is truelly looking very nice indeed.
nice work
Tom

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facebook.com/loststudiospdx

wow.

thank you tom!
that's makin' me really happy!
after a long break from october last year to february this year caused by a giant lack of planning and a couple of tours plus
some kind of burn out I managed to start the last big 'n long building session.
right now it's festival season so I am only able to work 3-4 days/week...long enough to get some things done and too short
to see big progress happening. apart from that I'm still doing everything alone. just me and my brain.
I really hope that I'll find some time to sort my trillionthousands of pics to share 'em with this superb forum^^

see ya =)
and again: thank you very much!

carsten

You know the rule here, Carsten: "No pics means it didn't happen!" So until we see the pics (and like Tom said, we are all DYING to see them, and turn green with envy at the quality of your craftsmanship), then you just didn't do a thing yet....


- Stuart -

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I want this studio to amaze people. "That'll do" doesn't amaze people.

With an e. My parents were Estonian and Andres is the Estonian version of Andre and my maternal grandfather's name. When I was named, my parents wanted a Canadian name, hence Andre. It is not French, it is Canadian.

Andre

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Good studio building is 90% design and 10% construction

Andre, you would have been Andy in Australia

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John Sayers Productions
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Studios Under Construction

And here's me spelling it "André" all the time! Sorry Andre!


- Stuart -

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I want this studio to amaze people. "That'll do" doesn't amaze people.