Hi
Im building a studio in Lahore, Pakistan... essentially as a place for my band 'Zindaroom' to do our own recording as resources are scarce and dubious here.
I am looking to install a monitor window between control and recording room. Pls advise on degree tilt of inner glass and suggested thickness of glass on both sides.
Also I have a choice to cement up a small 3X3 foot window or try a similar glass treatment there (my studio is part of my annex and there is immense leakage form a nearby road). Which shall i go for?
Thnx
Monitor Window queries
Originally posted at johnlsayers.com, topic 8234.
Greetings Rash,
The splay (or tilt) of your windows is usually only mean to diminish the visual glare on the glass, not for acoustical purposes (unless it is a large window parallel to another surface (wall).
As for thickness, it is determined by the acoustical isolation desired, for instance, a double wall with double 5/8 sheets of drywall (sheetrock) would require two panes of glass, one 3/8" and one at 1/2". (sorry, american units, not metric :)
I'm almost positive more people on the forum will be willing to help if you give some additional details about your construction, and read through the "Before You Post READ THIS..." at the top of each forum.
good luck!
kevin
Aloha and welcome to the forum!
The splay in the diagram from the SAE website http://www.saecollege.de/reference_material/index.html shows about 6.5 degrees.
Hope this helps, Aloha 8)Windows and doors require special construction because no matter how much you seal your walls if the windows and doors aren't built correctly your isolation will be ruined. The main thing with windows is that they must have the following features: * Different Glass Thickness. It is essential that the two sheets of glass be different in thickness. I recommend that you put the thicker of the two panes on the control room side. The thicker the glass obviously the better the sound isolation plus the thicker glass has a lower resonate frequency. Unfortunately thick glass is expensive. I would suggest you try 8mm and 10mm glass. (5/16", 3/8"). Any thinner and you are going to start getting resonate frequencies from the glass and inadequate sound isolation. * Angles. The two sheets of glass must be at an angle to each other else the two sheets will interact in a resonate sympathy and the sound reduction properties will be reduced. You can angle the glass as in the following drawing but don't forget that the glass can also be angled in the horizontal plane as well as the vertical plane. * Silica Beads. Because the windows are sealed the cavity created is a different temperature and humidity than your rooms which are probably air conditioned. It is therefore possible for the glass to steam up as in your car but not quite as dramatically. It is therefore recommended that you purchase some silica beads ( like you get in a little sachet when you purchase a quality camera or the like) and put them in the cavity between the glass. * Insulation. The cavity between the glass is like any space and will have a reverberant field so you must line around the cavity with insulation. The easiest way to do this is to cut sheets of fibreboard to the shapes and then glue thin fibreglass to it. Then you can wrap cloth around it for aesthetics and glue it into place. It is also a good idea to drill 25mm - 50mm (1" - 2") holes in the fibreboard in which you can put the silica beads.