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Post by markus on Apr 13, 2010 18:38:15 GMT -5
2.1 setup, XO@100Hz with different slope settings. L/R 24dB, Sub 24dB:  L/R 24dB, Sub 12dB:  L/R 12dB, Sub 24dB:  Something's wrong. Best, Markus |
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Post by moodyman on Apr 13, 2010 18:54:15 GMT -5
What are you using to generate your graphs?? Testing the sub xover /slope would be hard if they only apply to the LFE channel....which I think they are.
Actually the graphs look right...
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Post by pultzar on Apr 13, 2010 19:29:37 GMT -5
What are you using to generate your graphs?? Testing the sub xover /slope would be hard if they only apply to the LFE channel....which I think they are. Actually the graphs look right... The subwoofer line is wrong. The slope doesn't change between 12 and 24db until the L/R is set to 12db. |
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Post by moodyman on Apr 13, 2010 19:32:28 GMT -5
What are you using to generate your graphs?? Testing the sub xover /slope would be hard if they only apply to the LFE channel....which I think they are. Actually the graphs look right... The subwoofer line is wrong. The slope doesn't change between 12 and 24db until the L/R is set to 12db. No..if the subwoofer slope setting only applies to the LFE channel your not gonna see anything unless you have test signal specifically encoded to be routed through the LFE channel... I'm asssuming he's running a test signal through his mains...in which case you do see the slope change on the bottom graph as he changes the slope setting for his mains.. |
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Post by moodyman on Apr 13, 2010 19:39:18 GMT -5
Assuming the UMC is set up somewhat like this you can see how the sub slope settings would not affect the audio on the other channels  |
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Post by markus on Apr 13, 2010 19:43:25 GMT -5
What are you using to generate your graphs?? Testing the sub xover /slope would be hard if they only apply to the LFE channel....which I think they are. Actually the graphs look right... I'm using FuzzMeasure. The swept sine is sent to the UMC-1 via optical, then simply measuring the UMC-1's outputs. The UMC-1's behavior is simply wrong. |
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Post by moodyman on Apr 13, 2010 19:47:25 GMT -5
What are you using to generate your graphs?? Testing the sub xover /slope would be hard if they only apply to the LFE channel....which I think they are. Actually the graphs look right... I'm using FuzzMeasure. The swept sine is sent to the UMC-1 via optical, then simply measuring the UMC-1's outputs. The UMC-1's behavior is simply wrong. Ok...but your not running anything into the LFE channel...so you have no way of testing it..just like you have no way of hearing that sine wave through the center or surround speaker... |
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Post by moodyman on Apr 13, 2010 19:56:10 GMT -5
inputting a low freq test tone into the 7.1 multichannel analog SW input might run it through the LFE channel..I'm not sure though...
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Post by markus on Apr 13, 2010 19:58:02 GMT -5
I'm sending the test signal into L or R, then the bass management of the UMC takes over.
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Post by loopinfool on Apr 13, 2010 20:02:52 GMT -5
I'm sending the test signal into L or R, then the bass management of the UMC takes over. Then your graphs are correct. Only the L/R crossover slope setting is in play, as you're testing the L/R inputs. As others have said here, the Sub slope only kicks in for the LFE channel. You'd need to send that in via MultiCH PCM, a DD format, or a DTS format to test that one. - LoopinFool |
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Post by markus on Apr 13, 2010 20:22:19 GMT -5
Then your graphs are correct. Only the L/R crossover slope setting is in play, as you're testing the L/R inputs. As others have said here, the Sub slope only kicks in for the LFE channel. You'd need to send that in via MultiCH PCM, a DD format, or a DTS format to test that one. - LoopinFool So you're suggesting that it's just the label that is wrong? "Sub" should be "LFE"? |
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Post by pultzar on Apr 13, 2010 21:19:47 GMT -5
The subwoofer line is wrong. The slope doesn't change between 12 and 24db until the L/R is set to 12db. No..if the subwoofer slope setting only applies to the LFE channel your not gonna see anything unless you have test signal specifically encoded to be routed through the LFE channel... I'm asssuming he's running a test signal through his mains...in which case you do see the slope change on the bottom graph as he changes the slope setting for his mains.. Agreed |
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Post by loopinfool on Apr 13, 2010 21:44:52 GMT -5
So you're suggesting that it's just the label that is wrong? "Sub" should be "LFE"? Well, sure, that may help eliminate some confusion. The crossovers are per- input. Active sub crossovers like this generally have the same slope on both sides, so the levels match up. Your graphs show that to be true here. The Sub setting (really a low-pass filter) is for the Sub input, AKA the LFE channel. You were testing the L/R input crossovers. - LoopinFool PS - That level difference may be an issue (as you posted elsewhere), but I suspect it's influenced by the speaker level settings and channel equalizers. You may want to play with those to get your crossover graph level on top. |
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Post by markus on Apr 13, 2010 22:01:00 GMT -5
It would be helpful to exactly know how routing looks like, where low and high passes are applied and how they can be set. I asked Emotiva for routing diagrams a couple of times but they didn't answer.
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