My First Room Analysis

Well even if the data is confusing at least you've documented your starting point, Scott. You will now be able to see the changes after installing bass traps. The chart will start looking less like the Himalayas and more like the Appalachians.

What the chart shows is the amplitude and decay times for different frequencies. Your sample window was too short so you can't see the complete reverberation times. You might want to re-shoot it with a longer window, as that will give a more complete picture for a room in which reverb times are this long. The window should probably be around 1 second, judging by where the graph cuts off (300ms). One of the parameters you can expect to see improve are reverberation times, which should shorten up to around 400ms or so.

The chart also shows that your most severe room modes are around 95Hz and 160Hz. These should partially level out after the addition of bass traps. They may not get flat enough to make you happy, but just knowing your room has issues at those frequencies will help with EQ decisions, so you don't try to compensate for them with your equalizer.

I would really appreciate you sharing progress.  Thanks a lot!

Hee hee, I did the door like that because I needed it to open a certain way, and I needed to cut the "top" to fit.  There was actually more to work with on bottom (to cut), so it ended up like that!!  LOL.  You're the first to notice!!!! 

Yes, this should be an education and will be good to document here.  I should be getting those pads here soon, and will be building panels and traps in the next few weeks, as well as mudding/painting that room.

Wish me luck.

Before you even think about subjecting that room to loud vibrations, you want to secure those drywall panels. You don't have anywhere near enough screws there. The vertical panels are free to vibrate, and the ceiling is dangerously unsupported. It's only a matter of time before it will come down. That stuff is not as strong as it seems. You need screws every 7". No shortcuts.
Just don't want to see you get hurt. Take care of that, then proceed with the sound checks

The couch may be one of the best acoustical treatments you add to the room! Just don't cover it in leather or naugahide. Use a breathable fabric.

I think it's a great idea to share the whole process. Thanks for taking the time.

Hey, it's my pleasure to share the process.  I'm picking up lots of great ideas along the way.  I'm at the prime point to do it right or wrong!  So I'm taking my time and listening to those in the know.

Some specs for those that are interested.

Walls are 6" thick.  The front wall (with window) is stuffed with OC 703.  The same treatment will be applied to the wall with the door to the left.

The window is 1/2" plexiglass, and there's a sheet on the control room side, and the live room side, with 4" in between, though at the top it's 6", because I have the live room side angled down.  I'd like more ideas on how to seal this better. 

The two remaining walls are covered with drywall (single layer unfortunately, money is tight, but I'm hoping with the wall thickness and the insulation underneath I'll be allright) (BTW, all my drywall is 1/2") and 2x4 studs against concrete cellar walls.  The ceiling has just the standard pink house insulation underneath.
 
BTW,
I constructed it against the concrete walls, because I didn't want any of the studio walls to be near outside walls, even though there is concrete there.  On the other side of these basement walls is earth, the other side of the house slopes down, and there are windows, etc. to deal with. 

The floor is feux wooden flooring, basically a very nice linoleum treatment., directly on concrete.  It looks really nice and actually real!  We may put a throw rug down at some point, but don't want to deaden the room too much.

Feel free to ask any questions or offer suggestions!!!
 
Thank you all!

Excellent, I love these threads! Will follow closely. Did you all see that thread from the mastering engineer in Amsterdam? That was a great one to follow. Here is the link:

http://www.gearslutz.com/...nstruction-thread.html

Are you making the opposite walls not parallel to each other?  Even a few degrees away from parallel is beneficial.

When are you going to put your light fixtures in?

helmholtz