Quote:
brucek wrote:
 Use dBFS scale for impulse response graphs. It better shows noise and harmonics. |
Ok, here is what I've got:
Clipboard01.jpg Clipboard02.jpg Clipboard3.jpg
I must admit that I don't understand these curves. I will have to search the forum to find more info on them.
Quote:
brucek wrote:
Yeah, you should have been able to easily get rid of that peak at 36Hz with the EQ of the Ultra. I can't imagine why it didn't work. It's about your only resonance you have, so a single filter in your PEQ should do it. |
I kind of got rid of it but I could not get a nice curve. It looked like an inverted house-curve (lower LF, higher HF). That's what I would like to achieve first. Removing the last 36Hz peak will probably be easy if I remove it at the end.
Quote:
brucek wrote:
Your next problem is a dip around 80Hz (crossover area). You should be able to address that with the subs phase and distance timing to remove the dip. |
Well, I tried to modify the sub phase but real-time measurements showed a very little modification (by 1-2dBs, not more). I will try to change the distance in my receiver as well, maybe that will help more.
Quote:
brucek wrote:
Ignore the 7KHz peak. It is no doubt caused by the cheap Radio Shack meter. That's a standard result when trying to do full range measurements with that meter. Don't attempt measures above 5KHz with an RS meter (and that's stretching it). |
Oh, I didn't know that. I thought that the calibration file was there to correct the Radio Shack meter. Another good reason to buy a good mic and sound card, quickly !
Quote:
brucek wrote:
That nice cove you have in the upper left ceiling. I wonder if it would have helped to have it extend all around the theater.... |
I had to build it to hide some pipes (it's filled with isolation materials). Never thought that it could go on both sides...
Do you think I should run separate measurements on both front speakers without the sub first?
Quote:
Wayne A. Pflughaupt wrote:
Your waterfall looks pretty impressive. I’m guessing you’re using bass traps? |
Thanks! No, I don't use any bass traps. I only have a standard 3-seat sofa in the middle of the room.
But the walls behind are in concrete and the right wall is next to the ground outside the house. Could that be the explanation?
