John Sayers' Recording Studio Design Forum

OK, so at long last I’ve finally got the plan going with Sketchup. I’ve been trying to deal with all the little details, and have been ‘baffled’ (;-p) with the speaker mountings for quite a while – the angles have been driving me nuts, especially where they interface with the rest of the framing.

Anyway, I thought I should post what I’ve done so far (planning that is, the construction has not yet begun).



Here with the soffits and ceiling frame. Sway bracing is integrated into the front wall framing. If the side walls are bolted to the front however, they may not be necessary.


Here again shown in context with the duct, vents and proposed silencer. I’ve tentatively added a duct to the floor. As these rooms are not heated, and as far as I know, this is an exhaust duct, then should I have to heat the room in winter, it makes no sense to have my costly heat be directly sucked out – the room will never warm up. So in this case I can switch via vents or plenum to have the air exhausted from near the floor as opposed to near the ceiling.

Here you can see how the proposed ceiling lip will be supported by the ceiling frame. The cavities thus formed will be filled with FG, plastic film, and perhaps a layer of acoustic tile or slats. Also shown are the front down-light holes. Strips of RGB LED lighting will be run along the ceiling framing sides and rear.




Shown here is the finished soffit with the rear down-lights (over the couch position). Since designing this soffit, I’ve decided to maintain the isolation at the egress of the pipes themselves instead of requiring the entire soffit to be airtight, so apart from the sections directly covering pipes, the rest will be soft absorption instead of the OSB as shown here.
Shown too is the encasement for the drain. This will be stuffed full of RW and a layer of rigid FG. Not really visible is an access panel to the drain. Also not shown are the corner absorbers




And here with the partial drywall ceiling. The double layer of drywall forming the lip will be screwed into the frame wall and ceiling using screws into plastic plugs as opposed to direct into the wood.

And further strips of neoprene (Randdammstreifen) applied for the interface to the ceiling insulation. These strips are not shown complete, and/but may not be necessary anyway

_________________
Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

Views from above.

_________________
Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

The left and right isolation walls will be constructed in 2 sections each. The sections abutting the front wall will be bolted to the floor (isolating the bolts as discussed earlier. The walls will rest upon strips of something here called Randdammstreifen. The interface to the front wall I am considering either doing it the same as the floor with Randdammstreifen and bolting, or glue a strip of 12mm compressed rigid fibreglass along the stud where it butts against the front wall then backer rod and caulk. The latter idea is shown in the following clip. The inner drywall wall shown (grey) is only a small panel near the ceiling which I will show in a later clip. Also I was thinking here that with the rigid FG, backer rod wouldn’t really be necessary as the FG would itself serve this purpose. Again this section could be bolted if necessary to the front wall.


The second section will be bolted to the first section, bolted again to the floor.

Where the sections must accommodate pipes and vents, the contour of the wall will be adjusted accordingly.

The missing section of 2x4 will be added after the wall is in place.




The rear wall will mate with the side walls using the same technique of rigid FG and caulk

_________________
Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

Shown here are the speaker walls and slat absorbers. The speakers are Cerwin Vega E310’s which are directed at the couch position (@ 38% from rear wall although I’m not certain I will even have a couch) in a wide angle. I’m flush mounting these to subdue the bass (ported rear) a little more than is possible with the adjustable X-over. I’ve had these speakers in this configuration for a long time and find them excellent as an alternative listening pair – typically HIFI and different than the monitors proper.
Though in the past they have always been free hanging – I’ve always felt that the Bass from the rear needed a bit more absorption. The main monitors will be on a stand behind the desk in near-field configuration.


Here are the hangers. The upper cavity behind the speakers will be filled with loose FG and the speakers allowed to port down to the hanger cavity. I’m still debating on whether the speakers should be mounted in boxes or just on shelves fixed in place with neoprene or foam decoupling. I’m tending toward the latter.


I know the port is missing at the bottom of the trap, Haven't gotten around to drawing it yet.


The slat walls will be constructed pretty much standard. They will be in two registers – the lower for bass, the upper for mids and highs. The upper section continues to the speaker wall, the lower ends abruptly leaving only an absorber in the wall. This is to avoid constriction of the desk space and accommodate positioning of the desk and isolation box etc.



The Sketchup file is 2.1 megs and I can’t seem to reduce it any more so it seems I can't post it.

I’m really anxious to get some level readings but the room has temporarily been commandeered as a storage room for building materials.

Also I bought some ‘Tiefgundierung’ and a big applicator brush last weekend to apply a sealing coat to the walls. Now I’ve seen they’re painting all the cellar walls anyway. Well maybe I can use some of it for the floor and maybe some in our winter-garden.

_________________
Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

the key is to remove as many materials as possible and purge the file. if not you could host it somewhere. on the slats - make the front angled panel absorptive. maybe make them shorter with steeper angles and make several of them (saw tooth). on the pipes and ducts - encase them in a soffit which is sheathed with the same isolation mass as your other isolation walls. adding the drywall over the pipe exit won't stop the sound from entering the pipes themselves... same for the ducts.

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Glenn

Studio Turbenthal.Skp

I purged most construction lines and extraneous materials but it's still too large. So I've zipped it and hosted it as you suggested.
The drywall at the pipes in/egress, is primarily to help maintain the walls integrity and remove the need for the entire soffit to be airtight. The pipes themselves are (to be) insulated and I will caulk where it passes through the drywall. I understand that the pipes themselves can pickup the vibrations and must be housed i.e. soffited within the soffit so to say. I did assume however that I could get away with a single layer of drywall or preferably OSB. The duct in the front will definitely be isolated - encased, as you put it.

Basically you mean leave the slats away where the panel angles to the speaker wall? I thought using the slats would help maintain the highs and would also be more aesthetic. Shorter, steeper... saw tooth - are you referring here still to the front angled part? Continuing the slats further back into the room may cause problems with furnishings.

_________________
Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

Your SKP file link returned this error:

"Secure Connection Failed

An error occurred during a connection to share.ols.inode.at.

SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message.

(Error code: ssl_error_weak_server_ephemeral_dh_key)


The page you are trying to view can not be shown because the authenticity of the received data could not be verified."


Most likely isn't me...maybe

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Brien Holcombe
_____________________________________________
Sound: You can't stop it, you can only try to contain it.

Is that another way of saying it got a friendly kick in the pants and took offence?

I don't know Diffle or Hellman but I used to go hiking with a Duffle bag which often contained Hellman's mayo...

Jeepers'
...and April 1st is already gone...

I've tried the link from a few other PCs - including from work where we've got firewalls and scanners galore, and I've had no problem.

Anyone else have problems with the link?

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Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

Your link worked fine for me.

i got the error but i took the "s" out of https and it worked fine. it looks like you added the soffit for the pipes - good. on the slats nearest the speakers - make those short slats just cloth cover absorbers. effectively the entire short angled side is absorptive top to bottom.

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Glenn

Pretty much anyone outside of your network is going to have an issue with it. As Glenn said, removing the "S" which reduces the protocol to a HyperTextTranferProtocol from the SPECIFIED SECUERHyperTextTransferProtocol is a vast difference...it's the Internet and everything is for a reason.

RJRollins is full of @#$%, the link did not work for him in the current secured form, assuming the "s" was not removed from the https protocol.

_________________
Brien Holcombe
_____________________________________________
Sound: You can't stop it, you can only try to contain it.

OK I edited the post and removed the offending "s". It should work now.

_________________
Brian
As you slide down the bannister of life, may the splinters never point the wrong way...

HAH ... Maybe you didn't try 'SAVE TARGET AS' .... that's what I used ... the file showed
up.

I see.


Well, if every link has to have instructions...then that should be documented as to how to document can be accessed.


You got lucky, that is the way you work your on-line experience, I did what the man asked and it failed....but the Internet does that on a regular basis:)

_________________
Brien Holcombe
_____________________________________________
Sound: You can't stop it, you can only try to contain it.

Hi, not sure if u went @ ur block wall yet but I had the same dilemma in my studio build, here is a link to what i did -
viewtopic.php?f=2&t=14252

After I waterproofed the wall with that thick black rubbery paint i plastered it with a thin layer of gypsum render, there was a bit of work in it but the wall is definately sealed

keep up the good work
hally