subwoofer alignment

Re: subwoofer alignment

Thanks for the plots Peter, I went to the meyer site to get maap, but obviously they are not reviewing emails on sunday night... SO I went EAW site, and got resolution ( which I should probably be using anyway)... I've been using the older version of the 730 prediction software. anwyays here is what i got with 4 center clustered SB1002, and two under each hang ( simulating tx-9) I know it's not the same, but there isnt' a tx-9 (or SB850 option in resolution), so I added 2 "double 18" sources... This is with an 80hz profile
 

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Re: subwoofer alignment

Hi Shane:

Resolution has (3) "SPL Interpolation" modes and defaults to "fast", which is a power summation only plot that you've shown. That means that it excludes phase calculations thus making sub array analysis fairly useless. Change the mode to "best" and it'll redraw a "complex" (includes phase) prediction with the associated comb filtering.

Once you master it, you'll find Resolution far superior to the KF730 wizard software, which in effect will result in an upgrade in sound quality with zero additional monetary investment. :)
 
Re: subwoofer alignment

Langston Holland said:
Hi Shane:

Resolution has (3) "SPL Interpolation" modes and defaults to "fast", which is a power summation only plot that you've shown. That means that it excludes phase calculations thus making sub array analysis fairly useless. Change the mode to "best" and it'll redraw a "complex" (includes phase) prediction with the associated comb filtering.

Once you master it, you'll find Resolution far superior to the KF730 wizard software, which in effect will result in an upgrade in sound quality with zero additional monetary investment. :)
Click to expand...

Thanks Langston, as always you're a vault of info... I re-plotted this same thing with the best setting, and it didn't change too much... I'll post that later.
I'm thinking I'll run the tx-9's under the array, and two sb's high, 4 wide in front of the deck... it seems to plot out the best using maap ( which I downloaded this morning)...
 
EAW Resolution Usage

Hey Shane:

Deselect the "Array" and "Property" panes in the View menu and you might like what you see better. :)

Other things to try with Resolution:

  1. In Options, set both "Side" and "Top" View Contour Lines to 3dB per division.
  2. For sub arrays, select 1/3 and 1 octave at the kick fundamental of 63Hz in Venue Pane.
  3. For high frequency arrays, select 3 octave at 2kHz for the critical midrange in Venue Pane.
  4. For high frequency flown arrays, in Array Assistant you'll almost always want to select "Allow Upper Overshoot". Always play around with the suggested fly grid pick point and interbox pinning locations, it's not hard to beat the software's recommendation. It is hard to significantly beat the software's recommendation, but it's fun and quite educational to try.
  5. Hover your mouse over all the little greens circles of your fly grid and loudspeakers in the Array Pane. Hang (12) of your KF730's all with "1-A" pinning locations and move the fly grid pick point "Position" to 13. Look for red and yellow circles and hover your mouse over them. Move the pick point to 12, then 11, then 10 and observe the circles changing color. Learn the max weight loads of these pins.
  6. In Options, select design factor and reduce it to 8:1 or 5:1 and watch the circles change color again.
  7. Right click on the Array and Venue panes.
Make sure you have other things to do because Resolution crawls as it only engages a single core of your CPU.
 
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