Yeh, I should re-do these examples with the new SPAN. But although I do use the new SPAN for its "mastering" mode, I still revert to the original SPAN for checking track EQs. Unfortunately, I don't know of any source for obtaining the old SPAN.

would be great cuz i cant find the old span anywhere-

Wow, after all traps up, mackies turned right sie up (how mackie recopmmends, and then moving the meter a little back and forth towards speakers, I got a frequency response Im happy with and feel like the HOURS (20 plus) of work on this bass trap project was worh it!

check out the final response:





Here some trap shots:

Back to the Haus with Knauf!



One Panel pre covered




Notice above I used cardboard tabs and string to get the panels to stay put under the clioth - i did this especially because the material I got (which breaths better than burlap) is stretchy and also it was $1.50/yard instead of $4.50/yard the black burllap was, but the material is quite stong) - love downtown L.A. bargains-

Cleo, the great dane sweetheart kept me company some



Getting there!



A pile of hard work that paid off!

Great job!  The thing I noticed most after installing treatment was that the sound seemed so much more focused than before I treated my room.

Cleo looks a bit skeptical. Like "dude, the sun is shining and we could be doing something a lot more fun than hanging up spun glass".

That graph does look pretty good. I think if you can get within a 6db variance you're doing exceptionally well, as good as most professional spaces. You're there except for that 180Hz resonance. You might run Ethan's stepped-sine test to zero in on the exact range of frequencies and then work backward to calculate the wavelengths that are most likely contributing. Once you know the physical dimension, you can probably guess which parallel surface (or combination of surfaces) is causing it.

Wow.

What's up with the umbrella?  Is that for photographic diffusion?

Better idea of how my umbrella light works at night in the studio- this pic still doesnt do it justice haha

just used the old one lol thanx!

i gave you 24 hours to say that haha

This is the room with ARC engaged:

Even without ARC, that's a very respectable response with only 6db or less variance from the mean. That's pro-level quality all by itself. And the best part about fixing it acoustically rather than with EQ is that the improvement applies to most of the room, not just to the sweet spot.

The next step would be a waterfall plot, which shows you things that a simple RTA cannot. Specifically, it shows you the effect of modal ringing on reverberation decay times. Get a copy of the Room EQ Wizard if you don't already have it. It's free and easy to use, and if nothing else will generate a pretty picture you can hang up in your studio as a conversation piece.

...you should show us a picture of your studio before and after.

Unfortunately, all my before pictures were lost when I replaced a disk drive. You don't think about backing up those kinds of things. Suffice it to say they were as awful as any I've seen posted here or elsewhere.

My room is still not ideal and always will be, due to the size and layout of the space. I've resisted adding any more absorption because I feel that with RT60's currently around 400ms, additional absorption might well make the room overly dead.

But as long as I'm within 6db of the mean I'm happy. Here's a recent snapshot:

bitflipper


Even without ARC, that's a very respectable response with only 6db or less variance from the mean. That's pro-level quality all by itself. And the best part about fixing it acoustically rather than with EQ is that the improvement applies to most of the room, not just to the sweet spot.

The next step would be a waterfall plot, which shows you things that a simple RTA cannot. Specifically, it shows you the effect of modal ringing on reverberation decay times. Get a copy of the Room EQ Wizard if you don't already have it. It's free and easy to use, and if nothing else will generate a pretty picture you can hang up in your studio as a conversation piece.

Yes, I was surprised by how good the plot was, which is why I didn't quite believe it - I've redone the test several times, and with the same results each test, I'm starting to think that I really did fluke it! I'll definitely check out Room EQ Wizard.