Please check design .....

[LDQ]

and provide some comments.

Attached is the plan for the studio I am planning to build in my basement. Most all walls will be built using John Sayer's idea in order to save some space.

Some concerns I have are the following.

-Isolation to the rooms above, specially in the studio since I will record drums there.
-How to deal with the height 7.5 feet.
-Acoustical problems that might arise due to the columns being inside the control room. The reason why I placed them inside is because I didn’t really want a small control room.

What acoustic treatment anyone recomends for my 3 rooms.

Let me know what you guys think.

Regards,

Luis.

 

[John Sayers]

With some fine tuning you can get rid of the pole near the speaker. As for the other one, it should be ok but you will need to build a frame around it and fill it with insulation.

Here's my take on it.

cheers
john

 

[LDQ]

John,

Thanks for your response...great idea....just a few questions now.

In your take....

1. would the column in the vocal booth cause some problems since it is inside ???

2. What are the angles you are using for the walls, 6 - 6 and 12? I would like to implement your idea in my cad drawing. oh and what are the angles of the side walls after the speakers?

3. By getting rid of the column next to the speakers, the speakers are going to be closer therefore minimizing the distance from speakers to the sweet spot.....is that distance important or it doesn't really matter?

4. In regards to the pole in the control room....... what are the purpose of building a frame around it....isolation or reflection issues?

Thanks again John,

Note: Once I start the construction I would like to put up some pics in the studio under constructions page if it is ok with you.

Regards,

Luis.

 

[John Sayers]

John,

Thanks for your response...great idea....just a few questions now.

In your take....

1. would the column in the vocal booth cause some problems since it is inside ???

No it shouldn't provided it is sealed off. The sound can easily travel up the pole to the upstairs so boxing it off and filling the cavity with insulation wil stop that occuring. Same in the control room.

2. What are the angles you are using for the walls, 6 - 6 and 12? I would like to implement your idea in my cad drawing. oh and what are the angles of the side walls after the speakers?

I've just drawn what yours were which was 15 degrees in the control room. The others in the studio were at 12 degrees.

3. By getting rid of the column next to the speakers, the speakers are going to be closer therefore minimizing the distance from speakers to the sweet spot.....is that distance important or it doesn't really matter?

yes - I've tightened the speaker separation to enable the column to be incorporated into the wall. I'm not suggestiong removing the column, just hiding it in the wall frame.

4. In regards to the pole in the control room....... what are the purpose of building a frame around it....isolation or reflection issues?

see 1.

Luis. [/B]

cool - send me your pics when you are underway and we'll put it up on the site

cheers
john

 

[LDQ]

Thanks for all your help John,

Please Check out the latest drawing with your idea...it now contains actual measurements.

I have some acoustic treatment questions if you don't mind.....

For the length of my control room 15.88 feet as seen on the drawing...should I build a diffusor for the back wall or should I just make a panel absorver or a broad band panel absorver?

I know I definetily need the corner bass traps but how do I find out the depth of the cavity that I need for my room? My parallel walls are ceiling and floor (7.5 feet) modes 75 150 226 301 Hz Also the door in the control room is parallel to the wall across (12.38 feet modes 45 91 136 182 Hz. The lower the frequency it absorves the better???

In regards to the ceiling I know I have to put rigid fiber in order to make it absorbtive but would the lower frequencies that don't get absorved by the fiber glass cause a problem in the mixing position??

Regards.

Luis.

 

[John Sayers]

should I build a diffusor for the back wall or should I just make a panel absorver or a broad band panel absorver?

I suspect I'd avoid a diffusor and keep it dead with heavy 703 from the door all the way around to the opposite wall and making the corner traps as big as possible. Keep the brightness on the two splayed walls and possibly an angled ceiling above the desk angling up from the top of your window.

OTOH You could always make the rear wall a *V* shaped slot resonator to avoid the front rear standing wave.

cheers
john

 

[LDQ]

" Keep the brightness on the two splayed walls and possibly an angled ceiling above the desk angling up from the top of your window. "

Do you mean slot resonators on both side walls after the speakers in order to makea a low mid broadband absorver that reflects the highs to the back of the room?

" OTOH You could always make the rear wall a *V* shaped slot resonator to avoid the front rear standing wave."

Are you referring to Option A or B (See attached drawing). Also what do you mean by OTOH ???

Regards,

Luis.

 

[longsoughtfor]

Luis - From a line of sight point of view, would it make more sense to swap the control room and the vocal room? At least then from the control room, you can see into both booths.


Kevin.

 

[LDQ]

Luis - From a line of sight point of view, would it make more sense to swap the control room and the vocal room? At least then from the control room, you can see into both booths.


Kevin.

Hi Kevin,

I tried that, as well as other options too but no matter which way I did it I always ended up witht the posts right in the middle of the control room or the mixing position. Another reason why I placed the control room there is because I didn't really want any outside windows to have access to this room.

Luis.

 

[John Sayers]

You've got it - option 'B'

OTOH - on the other hand!

cheers
john

 

[LDQ]

Oh...I see what you mean OTOH....but then I am confuse now.

Quote " OTOH You could always make the rear wall a *V* shaped slot resonator to avoid the front rear standing wave."

But doesn't this slot resonator act as a diffussor for high Frequencies and previously you said you would avoid a diffuser for the length of my room???

Luis.

 

[John Sayers]

Yes I did say that - what I'm suggesting is that a diffusor just diffuses whereas a slot diffuses a bit AND absorbs a lot!

cheers
JOhn

 

[LDQ]

Keep the brightness on the two splayed walls and possibly an angled ceiling above the desk angling up from the top of your window.

cheers
john

Hi John,

3 questions:

On the attached drawing...

Would the 12 degree angle work for what you are talking about?

Is the angle of my soffit wall pointing to the sweetspot correct?

Should I make the angled ceiling a slot resonator or would that cause a problem with my nearfields?

 

[John Sayers]

Yes to all three questions.

cheers
John