Tiny All-In-One room
Posted: Fri, 2020-Nov-27, 21:24
Hello to everyone,
Finally after months of reading and learning, is time to start my own project! As the title describes I have the luck to be able to dedicate a room of my house to create a little home studio. Its dimensions are L: 3,74m W: 2,91m H:2,50m and is part of an old 50's house built of 70cm stone outside walls, 25cm solid brick inside walls, concrete tile floor, concrete ceiling and a solid wood 3cm door. The house is ground floor and there is another residence above.
I already have done some work in Sketchup and put some ideas in you can play with, which you can find in the following link:
https://mega.nz/file/51UEiZRK#1vzCiyLIi ... Io77qyG174
Here is the empty room sketch:
And here is a photo of how it actually is:
Some additional data:
The purpose of the room mainly is to be the best control room it can be according to its size, and also to have the ability to make a decent recording in it, mostly spoken voice and occasionally an acoustic instrument.
Things that I must do:
1) do something with HVAC. Since it is just a single room I think is will be relatively easy, but still I am searching and learning.
2) decide how I must treat the room to have a good sonic result with the minimum space consumed.
The biggest problem of all is the budget. I work as a sound engineer in the live industry and as you can imagine with the covid situation most works have stalled and I have no stable income, so the choices will be made with this in mind and with slow pace..
The heavy wall construction has already given good isolation from/to the outside world (nearest neighbour @ 4-5m.. ) with the weak link be the double-glazed window measuring 35-something db Loss just outside of it. I don't usually work with high SPLs, but there are dogs barking in the neighbourhood and airplanes frequently passing so I have to take care of this.
What I have done is to take care of the door: I beefed the simple solid core wooden door with a layer of 5mm mlv 10kg/m2 and an extra 30mm mdf layer and the result is within expectations (still needs a little tweaking with the seals):
Pink noise playing in the room (blue) and the result just outside the door (purple).
Note that I didn't make a super-heavy door because the house is quite old and I didn't want any surprises with cracked jambs etc...
After done that, I took my baseline measurement, the mdat you can find here:
https://mega.nz/file/RkMxSYJL#KDEZxVp4FuHYzZaPwtiOpUGHfGnwMwGmVYGovxWhF1I
and some screenshots:
Keep in mind that the room was not completely empty while measuring, there was a small drawer and cabinet in, things that will remain in place anyway.
Below is what I have in mind doing for this room:
60cm of hanger at the back wall 20cm insulation on the door , 20cm insulation +10cm air gap in the "refection zone", 30cm absorptive ceiling, angled slats at the back half of the room (to keep some brightness where the recordings would happen) and flushed monitors with slot resonators in the lower and upper section of the speakerwall (an idea that came after seeng the results of this build http://johnlsayers.com/phpBB2/viewtopic.php?f=10&t=21269&hilit=Door+seals&start=180, and maybe a limp mass absorber between the monitors for that 45hz mode..
I am also thinking of an alternative layout with soffit wings extended the more I could extend them, letting more room free with the cost of less absorption on the side walls.
It seems that it has a quite good raytrace image too at least.
And lastly the hvac part. A mini-split will take care of the air-conditioning and a small fan (I believe this https://www.solerpalau.com/en-en/in-lin ... 0v50hz-re/ will do) the ventilation. Since my walls are one leaf (and because of the lack of space) I will use one silencer for the fresh and one for the stale air.
Calculations:
Three people max 25x3=75m3
To obtain the 1,5m/s speed I need 13,3cm diameter register or almost 140cm2. I plan to use 10cm pipe and at the last meter 16cm (200cm2) with a 10x30 (300cm2) output (or whatever dimensions close to that). Will this work?
For the silencers I triple the cross section area (from 100cm2 to over 340cm2) and add one more baffle to the Gregwor design.
I will be happy to read your comments and suggestions!
Finally after months of reading and learning, is time to start my own project! As the title describes I have the luck to be able to dedicate a room of my house to create a little home studio. Its dimensions are L: 3,74m W: 2,91m H:2,50m and is part of an old 50's house built of 70cm stone outside walls, 25cm solid brick inside walls, concrete tile floor, concrete ceiling and a solid wood 3cm door. The house is ground floor and there is another residence above.
I already have done some work in Sketchup and put some ideas in you can play with, which you can find in the following link:
https://mega.nz/file/51UEiZRK#1vzCiyLIi ... Io77qyG174
Here is the empty room sketch:
And here is a photo of how it actually is:
Some additional data:
The purpose of the room mainly is to be the best control room it can be according to its size, and also to have the ability to make a decent recording in it, mostly spoken voice and occasionally an acoustic instrument.
Things that I must do:
1) do something with HVAC. Since it is just a single room I think is will be relatively easy, but still I am searching and learning.
2) decide how I must treat the room to have a good sonic result with the minimum space consumed.
The biggest problem of all is the budget. I work as a sound engineer in the live industry and as you can imagine with the covid situation most works have stalled and I have no stable income, so the choices will be made with this in mind and with slow pace..
The heavy wall construction has already given good isolation from/to the outside world (nearest neighbour @ 4-5m.. ) with the weak link be the double-glazed window measuring 35-something db Loss just outside of it. I don't usually work with high SPLs, but there are dogs barking in the neighbourhood and airplanes frequently passing so I have to take care of this.
What I have done is to take care of the door: I beefed the simple solid core wooden door with a layer of 5mm mlv 10kg/m2 and an extra 30mm mdf layer and the result is within expectations (still needs a little tweaking with the seals):
Pink noise playing in the room (blue) and the result just outside the door (purple).
Note that I didn't make a super-heavy door because the house is quite old and I didn't want any surprises with cracked jambs etc...
After done that, I took my baseline measurement, the mdat you can find here:
https://mega.nz/file/RkMxSYJL#KDEZxVp4FuHYzZaPwtiOpUGHfGnwMwGmVYGovxWhF1I
and some screenshots:
Keep in mind that the room was not completely empty while measuring, there was a small drawer and cabinet in, things that will remain in place anyway.
Below is what I have in mind doing for this room:
60cm of hanger at the back wall 20cm insulation on the door , 20cm insulation +10cm air gap in the "refection zone", 30cm absorptive ceiling, angled slats at the back half of the room (to keep some brightness where the recordings would happen) and flushed monitors with slot resonators in the lower and upper section of the speakerwall (an idea that came after seeng the results of this build http://johnlsayers.com/phpBB2/viewtopic.php?f=10&t=21269&hilit=Door+seals&start=180, and maybe a limp mass absorber between the monitors for that 45hz mode..
I am also thinking of an alternative layout with soffit wings extended the more I could extend them, letting more room free with the cost of less absorption on the side walls.
It seems that it has a quite good raytrace image too at least.
And lastly the hvac part. A mini-split will take care of the air-conditioning and a small fan (I believe this https://www.solerpalau.com/en-en/in-lin ... 0v50hz-re/ will do) the ventilation. Since my walls are one leaf (and because of the lack of space) I will use one silencer for the fresh and one for the stale air.
Calculations:
Three people max 25x3=75m3
To obtain the 1,5m/s speed I need 13,3cm diameter register or almost 140cm2. I plan to use 10cm pipe and at the last meter 16cm (200cm2) with a 10x30 (300cm2) output (or whatever dimensions close to that). Will this work?
For the silencers I triple the cross section area (from 100cm2 to over 340cm2) and add one more baffle to the Gregwor design.
I will be happy to read your comments and suggestions!