Originally Posted by javan robinson
questions to be sure I'm doing this correct.. -
Should my AVR be in Multi-Channel In Mode?
To measure the Center, yes.
For Output, should I select "Display Audio Output 1 3" in order to select the CENTER speaker?
I recommend to always check, if the test signal is really coming from the correct speaker with the ear.
I not only once made a series of measurements just to notice later, after I packed away the mic and preamp, that the receiver was running in stereo or Dolby Surround mode...
When you said pay attention to the "center impulse graph" - what is that exactly?
The impulse response from the center channel.
It shows how loud early reflections are. The louder they are, the more the sound becomes smeared and imprecise. As a general rule the peaks should not be louder than -20 dB after 2 ms.
But make sure in the impulse chart that REW calculated and detected the impulse peak correctly at 0 dB and 0 ms.
And final and maybe most important question - if I'm unable to garner the results I'm looking for with little system tweaks - changing crossover, standing on my head, etc - is the next step room treatment? If so, what form of room treatment would I gain the most bass back if that makes sense?
Don't forget one fatastic option you have not mentioned: change of the listening position/distance to the screen.
Well, it depends on what the graphs show. I would focus on the biggest problem first.
And I've played w/ the phase knob before - is it commonly used for matching 2 different or similar sounding subs? I only have one, but I may play around with this too!
I congratulate you to that approach. Trying things out, listen reference material carefully and measuring is the way to learn the most - and sometimes discover excellent surprising results without even spending tons of money.
You will also notice, by comapring different graphs with one changed setting, how the room reacts. That willhelp you develop a sense and additional understanding, what you could try.
REW also has a nice room simulator. Giver it a try. It can help you to get new ideas, if the MLP was changed or the sub placed differently.