glass gift horse
Posted: Tue Nov 11, 2003 5:59 am
I have stumbled upon some 3x5 by 3/8 glass. 2 sheets to be exact...I know they are supposed to be different thicknesses...but can I get away with this?
You can, spaced at 3" apart they would give STC 44, with a dip down to 40 dB at around 1250 hZ; replacing one panel with 1/4" glass would move the dip up to 1600 hZ and 41 dB. Both ways would end up at 22 dB by the time you get down to 63 hZ, so I doubt you'd be able to hear the difference.
If you can space them further apart, there's a slight gain in performance at the low end - 4" spacing improves low end by about 1 dB.
You could concievably trade one sheet for 1/4", but it probably wouldn't be worth the hassle... Steve
from another fireman, same one that's cutting the opening in m bricks for the door into the studio from outside. Wish you were close, we could have traded.