Building new studio

Hello, I am building my new studio in my new house. I will post pics in a sec (need to shoot them first :-) My main concern is how to build the window between the control room and the live room.I have built 2 in the past, but they were not very effective (sound proofing wise). Is there drawings/plans/tutorials I can see? The windows to the outside (garden) will all be alumminum frames with double laminated glass (one with 8mm and one with 6mm). Doors in the studio will be build the same way. I have 2 concrete walls separated by more or less 10cm, separating the control and live room. This is where the "problem windows" is to be placed. Another question: Sould I leave the space between the 2 walls empty or should I fill the gap with some absorbing material? Look forward to hearing from you asap. Kind regards Joni ps- I leave in Mozambique, so there are no professionals to help or specific studio materials so one needs to improvise.

42 views and not a single reply... Is my question so futile? kind regards joni

Hey djoni, your questions are not futile, but the answers to your questions can be found on these forums and website. Anyway: building windows: http://johnlsayers.com/Recmanual/Titles/Acoustics3.htm windows don't have to be angled btw. And yes, fill the cavity of your walls with insulation, don't compress it and keep it loose. It'll increase the isolation of your walls( although i don't know the isolation values of 2 brick walls) Make sure you seal every gap. What do you plan to use for insulation materials?

"The windows to the outside (garden) will all be alumminum frames with double laminated glass (one with 8mm and one with 6mm). Doors in the studio will be build the same way." The aluminum frame is going to be an issue. Sound moves faster through metal in general and an aluminum frame has many voids, air pockets, that take away from the mass required to isolate the sound. You would be better off building a solid wooden frame and installing glass into that.

Thanks for your reply Xspace. The aluminnium windows have already been ordered...payed 50% already!!! But I went to see a model of the windows they will make for me and they look quite solid, air tight, and the glasses cover most of the frame, with rubber all around. I don't think that the frame will be an issue...I might be wrong thought... MunchkinBrando, I tried to use the search to find the info I wanted but failed to do it... I guess I need to leard how to search the forum and website. I still don't know what I am going to use for insulation, I will find out what is available and post here for coments... kind regards Joni

Aluminum is never solid in respect to frames, it is a rigid metal used to make light weight product and is cast and molded to resemble what looks solid and is rigid but is not solid even though it is rigid by virtue of the properties of the aluminum. Trust me that it is something you need to pay attention to in pre-installation mode. You may be able to install insulation into the voids if you can get access to the interior of the frame.