For an accurate build, your SketchUp needs to be as accurate as possible. I'd suggest fixing the drawing. It's easy in SketchUp!
How I know the resonant frequency of my wall? With your MSM TL Calculator?
Yes, that should be close! We can estimate that a wall system that has decent isolation will have a very low resonant frequency. Therefore, use insulation that is appropriate for very low frequencies.
It's possible to use rock wool? In Portugal it's more common selling rock wool instead of fibreglass or mineral wool. And it's more cheaper.
For sure! Fiberglass is way cheaper where I live.
A doubt:
The walls in red will need more isolation, because the existing walls are thin and turned inside the house. The walls in blue are underground, thick and outside walls.
My inner room needs the exact same density in all 4 walls? I will use drywall + viroc, but in the blue walls can I use only drywall?
It would be a saving of 20m2 of viroc.
You cannot achieve more isolation on some walls and less on others. The surface densities required to achieve the minimum amount of isolation you need must be present everywhere. Therefore, your inner room does need the exact same density in all 4 walls AND the ceiling!
Greg
It appears that you've made the mistake most people do. You started building without consulting this forum.
For an accurate build, your SketchUp needs to be as accurate as possible. I'd suggest fixing the drawing. It's easy in SketchUp!
You cannot achieve more isolation on some walls and less on others. The surface densities required to achieve the minimum amount of isolation you need must be present everywhere. Therefore, your inner room does need the exact same density in all 4 walls AND the ceiling!
Ok! But in some walls the insulated cavity between the outer room and inner room will be different, caused by the frame in the brick wall. This is a problem?
For sure! Fiberglass is way cheaper where I live.
Can you tell me the kg/m3 to low freq to rock wool?
Ok! But in some walls the insulated cavity between the outer room and inner room will be different, caused by the frame in the brick wall. This is a problem?
Not a problem. As long as the smallest cavity is still large enough to do the job, then it doesn't matter if the other cavities are deeper.
Can you tell me the kg/m3 to low freq to rock wool?
For mineral wool, you will need something around 50 kg/m3. For fiberglass, it would be around 30 kg/m3.
For mineral wool, you will need something around 50 kg/m3. For fiberglass, it would be around 30 kg/m3.
Mineral wool = Rock wool. In Portugal the same material as two different names... I understand now!
This is the very first rough 2D design of the live room.
I opted for 3 separate rooms: live room, vocal booth and a very small guitar booth (only to fit one or two Marshall cabinets, or a combo)
Of course it will have doors, windows, etc!
I'm going to start building the control room soon but I will buy all the materials for both rooms. So I need to budget all the materials.
For now, before designing in 3D, I need to confirm that I'm on the right track.
I'd ditch the angled walls. I'd also ditch the guitar cab booth and make a great sounding vocal booth (by making the vocal booth bigger). Instead of using guitar cabs I'd save a ton of money and buy a load box and something like the Mooer Radar cab simulator pedal. Not only would a cab booth cost you money on doors, it makes for a way more complicated and more expensive HVAC system. To me, it has way more cons than pros.
Greg
It appears that you've made the mistake most people do. You started building without consulting this forum.
Not a problem having parallel walls in a tiny room?
I'd also ditch the guitar cab booth and make a great sounding vocal booth (by making the vocal booth bigger). Instead of using guitar cabs I'd save a ton of money and buy a load box and something like the Mooer Radar cab simulator pedal. Not only would a cab booth cost you money on doors, it makes for a way more complicated and more expensive HVAC system. To me, it has way more cons than pros.
Once I've several good marshall cabs and vintage amps, this is my solutions to using them! I imagined using this booth to having a band playing all together in the live room but only miking the drums.
I other hand, I like the idea of having a great sounding vocal booth.
And I always have the possibility to build isolation boxes to marshall cabs and put them in the garage!
Once I've several good marshall cabs and vintage amps, this is my solutions to using them!
I own a lot of vintage high end amps too but for many years I've been using an AxeFx for most records. I captured IR's of all of my cabs that I load up if need be. I should just sell all of my amps but most have sentimental value. Using things like the AxeFx is such a great solution to tracking live off the floor if that's what you're going for. Don't get me wrong, I love capturing a "real" amp. But I personally wouldn't sacrifice a great vocal booth for it! With variable treatment in your vocal booth, it could be a deadly room to throw mics on a guitar cab upon overdub or reamping!
Greg
It appears that you've made the mistake most people do. You started building without consulting this forum.
Not a problem having parallel walls in a tiny room?
It's not a problem in ANY room! It's actually a myth that you need to angle walls. About the only reason you might want to is if you suspect that you will have a flutter echo problem, but then you would need to angle them by at least 12°... and you can fox flutter echo very easily with treatment that you would need in any case. Angling walls wastes space and makes it harder to build: right angle corners are easier!
But I personally wouldn't sacrifice a great vocal booth for it! With variable treatment in your vocal booth, it could be a deadly room to throw mics on a guitar cab upon overdub or reamping!
Great idea! It will be like you said!
It's not a problem in ANY room! It's actually a myth that you need to angle walls. About the only reason you might want to is if you suspect that you will have a flutter echo problem, but then you would need to angle them by at least 12°... and you can fox flutter echo very easily with treatment that you would need in any case. Angling walls wastes space and makes it harder to build: right angle corners are easier!
Of course! Make sense.
So here's my new rough design:
Capturar2.JPG
Even though I would like to have glass doors between the two rooms, the walls should be like this design or should have a two leaf wall in each room like this design below?
(sorry the design is not good, but I think you understand the question)
Here it is my Live Room/Vocal Booth!
I decided to invert the plan, the Live Room will be close to the window to get natural light, and Vocal Booth will be underground.
This Vocal Booth, with variable treatment, even will be good to play drums during the night!
As you see I've two big concrete beams. How I handle with that?
Can the ceiling be parallel to the floor?
I forgot the idea of using Viroc. It's very heavy, it's very expensive and cannot be glued to the drywall. So I will use 2 boards in the control room and 3 boards in the live room / vocal booth.
As you see I've two big concrete beams. How I handle with that?
Simply building your inner leaf frame "around" (sorry if that's a broad silly term) the beams and have your inner leaf ceiling joists run in parallel with them. You can apply thick sheathing "around" the bottom of the beams and have the sheathing mounted to the joists. Basically, just make sure your surface density is maintained as well as the decoupling.
Can the ceiling be parallel to the floor?
Of course! We typically recommend building your inner leaf ceiling "inside out" so that you have insulation in your ceiling "modules".
Greg
It appears that you've made the mistake most people do. You started building without consulting this forum.
I think this is the end of this post. I will create a new one on construction forum.
Now it's time to build!!!
Stuart and Greg, many many thanks for all your help on my design.
A year ago I did not know anything about studio construction (and I still do not know) and now I have the design of my own studio!!! Guys you rock
Also thanks for your dedication to this forum to keep it online after so many years.
It's actually a myth that you need to angle walls. About the only reason you might want to is if you suspect that you will have a flutter echo problem, but then you would need to angle them by at least 12°... and you can fox flutter echo very easily with treatment that you would need in any case. Angling walls wastes space and makes it harder to build: right angle corners are easier!
