Thanks for the info, Nate!
I asked mainly because I'll probably be putting in another window (either here or another location) at some point ... and I thought that was one of the hardest things to do. Just getting the finished opening nice and square was a pain.
I used two 1" insulated glass panes (1/8" pane - 3/4" airspace - 1/8" pane) in my window and have a simliar wall construction as you (no staggered studs or RC, though ... still kicking myself). One 1" pane per wall with about a 2" gap in between the walls.
I've heard that some folks use 3 panes to get a better STC, but that seemed a little expensive and complicated.
I've also heard that you should mount each pane at a slight angle to avoid resonance between the glass. I didn't follow that advice, but did put foam covered with thick fabric around the perimeter of the window (inside) to help soak it up. So far, haven't noticed any major problems.
Anyway, it works for me.
One thing that caught me by surprise was making sure the glass was clean as it went in. I thought I did a good job ... but it's a little hazy now 3 years later. I'm not removing the glass to clean it, though!
Anyway, thanks again for the info. I'm not looking forward to the next window ... but if I'm ever going to do that again ... I want to avoid as many mistakes as possible.
Also, when I get my doors tweaked ... I'll post here and show you what I did.
Thanks
[This message has been edited by BigKahuna (edited 04-06-2000).]