klettermann
Member
As a newcomer to REW I'm rather overwhelmed with how to interpret the results. And some functions I can't figure out at all. To be clear, At this point just I'm trying to optimize speaker and MLP positioning before starting with other room treatments, DSP equelization or whatever. I'm hoping that you kind folks can help get me on track. Here's the story.
My room is L22ft x 12.2ft x H7ft. Speakers are Magneplanar MGIIIa's positioned 4'6" from front wall and 2' from side walls (to center of speaker, speaker edge 1ft from side wall). The room has minimal treatment - it's fully carpeted and there are ASC tube trap towers in the 4 corners. MLP was originally about 13ft from front wall because this created an equilateral triangle with speakers and was a good TV distance. The LF room modes were simply horrendous. After several iterations the MLP ended being 17'3" from the front after successive scans farther and farther back. Doing so seemed to improve matters greatly, leading to the last series of testiing.
It turned out that the best result seemed to be MLP 18ft 3in from the front. Please see scans below. The only difference is moving MLP from 17'3" (green) to 17'9" (red) to 18'3" (blue). Obviously MLP has a substantial impact! Can anybody comment on these scans? My sense is that blue is best, though the low end is still all over the place. Is the only solution a lot of bass traps? There are already 4 in the room. Comments welcome!
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Then there's the question of spectrograms. Shown below is the reference blue trace. I really don't know how to interpret these. Is this OK? Does it indicate obvious problems? Comments?
Again, I'm not sure if these results are pretty good, terrible, or what. How many more bass traps does this translate to? Set up some kind of DSP in pursuit of total flatness? Or call it a day? I've gottas say, the system sounds very VERY good - incredible clarity, imaging/sound stage, no obvious muddiness. Thanks in advance and cheers,
My room is L22ft x 12.2ft x H7ft. Speakers are Magneplanar MGIIIa's positioned 4'6" from front wall and 2' from side walls (to center of speaker, speaker edge 1ft from side wall). The room has minimal treatment - it's fully carpeted and there are ASC tube trap towers in the 4 corners. MLP was originally about 13ft from front wall because this created an equilateral triangle with speakers and was a good TV distance. The LF room modes were simply horrendous. After several iterations the MLP ended being 17'3" from the front after successive scans farther and farther back. Doing so seemed to improve matters greatly, leading to the last series of testiing.
It turned out that the best result seemed to be MLP 18ft 3in from the front. Please see scans below. The only difference is moving MLP from 17'3" (green) to 17'9" (red) to 18'3" (blue). Obviously MLP has a substantial impact! Can anybody comment on these scans? My sense is that blue is best, though the low end is still all over the place. Is the only solution a lot of bass traps? There are already 4 in the room. Comments welcome!
------------------------------------------------------------------------------------------
Then there's the question of spectrograms. Shown below is the reference blue trace. I really don't know how to interpret these. Is this OK? Does it indicate obvious problems? Comments?
Again, I'm not sure if these results are pretty good, terrible, or what. How many more bass traps does this translate to? Set up some kind of DSP in pursuit of total flatness? Or call it a day? I've gottas say, the system sounds very VERY good - incredible clarity, imaging/sound stage, no obvious muddiness. Thanks in advance and cheers,