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Post by ansat on Jan 3, 2015 12:24:47 GMT -5
Tony, If you point me toward your REW tutorials I can play with them while waiting for my replacement emo mic. I already have the umik-1. Thnx Paul Bottom of the first post Paul. Tony |
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Post by ansat on Jan 3, 2015 12:33:55 GMT -5
Now to the misunderstood green line. For the most part. It is not helpful or an accurate representation of much. Let me first thank Tony for the great and knowledgeable work he is doing in supporting the Emotiva forumers  The green line is often misunderstood because it is the average of the nine FR responses in the nine positions after correction, as such IT IS an accurate representation, even if a computed one, and it can be validated by averaging the same nine measurements with REW when using the same smoothing and mic position. The blue line is an average of nine measurements before correction and it can be usefully and meaningfully compared to the green after correction line. Those average graphs are useful in real life... the before and after correction graphs for the single individual positions are also accurate when present as in the standalone full Dirac Live version. Flavio Flavio, I added your thoughts to the main body of the post. Tony |
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Post by fbczar on Jan 4, 2015 18:04:22 GMT -5
Tony, How do you read the impulse response graph for a subwoofer?
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Post by foggy1956 on Jan 5, 2015 18:26:35 GMT -5
Tony, Round 2 with the new Emo mic, please let me know what you see if time permits? Thanks Paul      |
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Post by ansat on Jan 5, 2015 18:51:55 GMT -5
Tony, Round 2 with the new Emo mic, please let me know what you see if time permits? Thanks Paul Hey Paul, play with that subwoofer a little. 50hz+ drops really quickly. As for the mains, the impulse looks ok, you do have that second spike in the before, and I imagine that its still there after Dirac. Its likely caused by the ports on the speakers, but it could be a reflection off the floor as well. The drop at 15k seems ok (a little digging online suggests that this is not uncommon for tektons) But overall the charts look good. How is the bass and the treble sound? Tony |
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Post by foggy1956 on Jan 5, 2015 19:01:17 GMT -5
Tony, Round 2 with the new Emo mic, please let me know what you see if time permits? Thanks Paul Hey Paul, play with that subwoofer a little. 50hz+ drops really quickly. As for the mains, the impulse looks ok, you do have that second spike in the before, and I imagine that its still there after Dirac. Its likely caused by the ports on the speakers, but it could be a reflection off the floor as well. The drop at 15k seems ok (a little digging online suggests that this is not uncommon for tektons) But overall the charts look good. How is the bass and the treble sound? Tony Tony, What do you suggest for the sub, floor is carpeted, I need to pick up some acoustic panels( internet suggestions?) Listening to music in reference stereo right now, I'll put a movie in and get back to you. Thanks again, Paul |
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Post by ansat on Jan 5, 2015 19:08:02 GMT -5
Hey Paul, play with that subwoofer a little. 50hz+ drops really quickly. As for the mains, the impulse looks ok, you do have that second spike in the before, and I imagine that its still there after Dirac. Its likely caused by the ports on the speakers, but it could be a reflection off the floor as well. The drop at 15k seems ok (a little digging online suggests that this is not uncommon for tektons) But overall the charts look good. How is the bass and the treble sound? Tony Tony, What do you suggest for the sub, floor is carpeted, I need to pick up some acoustic panels( internet suggestions?) Listening to music in reference stereo right now, I'll put a movie in and get back to you. Thanks again, Paul Then the impulse is likely the port and you should not worry about it. For the sub, check the xover on the subwoofer its self. Its not set to 50 is it? |
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Post by tubby on Jan 5, 2015 20:27:50 GMT -5
I can't recall if it was mentioned in a previous thread or not, when the data is loaded to the xmc after running Dirac, should the levels show values or not? I finally got to run it today quickly and everything went fine but the levels all still say zero.
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Post by foggy1956 on Jan 5, 2015 20:41:00 GMT -5
I can't recall if it was mentioned in a previous thread or not, when the data is loaded to the xmc after running Dirac, should the levels show values or not? I finally got to run it today quickly and everything went fine but the levels all still say zero. Mine too, I believe this is correct. |
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Post by foggy1956 on Jan 5, 2015 20:52:08 GMT -5
Tony, What do you suggest for the sub, floor is carpeted, I need to pick up some acoustic panels( internet suggestions?) Listening to music in reference stereo right now, I'll put a movie in and get back to you. Thanks again, Paul Then the impulse is likely the port and you should not worry about it. For the sub, check the xover on the subwoofer its self. Its not set to 50 is it? Crossover was set at 90, thought I had it turned off. Turned it off and will rerun. Thanks again |
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Post by foggy1956 on Jan 5, 2015 21:10:47 GMT -5
Then the impulse is likely the port and you should not worry about it. For the sub, check the xover on the subwoofer its self. Its not set to 50 is it? Crossover was set at 90, thought I had it turned off. Turned it off and will rerun. Thanks again My bad, crossover was off. Had to increase sub by 5db and may need more, will run SPL. Midrange and high end sound very clean. Over all a large decrease in volume as noted many times. Paul |
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Post by foggy1956 on Jan 5, 2015 21:19:47 GMT -5
Crossover was set at 90, thought I had it turned off. Turned it off and will rerun. Thanks again My bad, crossover was off. Had to increase sub by 5db and may need more, will run SPL. Midrange and high end sound very clean. Over all a large decrease in volume as noted many times. Paul Had to add 12db to level match sub to other speakers |
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Post by ansat on Jan 5, 2015 22:21:58 GMT -5
My bad, crossover was off. Had to increase sub by 5db and may need more, will run SPL. Midrange and high end sound very clean. Over all a large decrease in volume as noted many times. Paul Had to add 12db to level match sub to other speakers Wow. That's the highest I have seen yet to get level matching on the sub. What did you have to do to the center? Tony |
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Post by foggy1956 on Jan 6, 2015 10:16:49 GMT -5
Had to add 12db to level match sub to other speakers Wow. That's the highest I have seen yet to get level matching on the sub. What did you have to do to the center? Tony Tony, The center sounded perfect this time, will the Dirac upgrade help this and that huge dip at 50 hz or will I need a mini-DSP or something else? Paul |
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Post by ansat on Jan 6, 2015 12:00:23 GMT -5
Wow. That's the highest I have seen yet to get level matching on the sub. What did you have to do to the center? Tony Tony, The center sounded perfect this time, will the Dirac upgrade help this and that huge dip at 50 hz or will I need a mini-DSP or something else? Paul I cannot find the specifications on your center. But Andrew Robinson is quoting 70hz on the pendragons is the +-3 If that is accurate, then I suspect that this might be the natural roll-off of that speaker. Call Tekton up and get the recommended xover for this speaker. Tony |
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Post by foggy1956 on Jan 6, 2015 12:24:40 GMT -5
Tony, The center sounded perfect this time, will the Dirac upgrade help this and that huge dip at 50 hz or will I need a mini-DSP or something else? Paul I cannot find the specifications on your center. But Andrew Robinson is quoting 70hz on the pendragons is the +-3 If that is accurate, then I suspect that this might be the natural roll-off of that speaker. Call Tekton up and get the recommended xover for this speaker. Tony Tony, Would Dirac upgrade or mini-DSP help with the 12 db bump or huge dip at 50 hz, or any other sub matters for that matter? Thanks, Paul |
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Post by ansat on Jan 6, 2015 12:48:37 GMT -5
I cannot find the specifications on your center. But Andrew Robinson is quoting 70hz on the pendragons is the +-3 If that is accurate, then I suspect that this might be the natural roll-off of that speaker. Call Tekton up and get the recommended xover for this speaker. Tony Tony, Would Dirac upgrade or mini-DSP help with the 12 db bump or huge dip at 50 hz, or any other sub matters for that matter? Thanks, Paul No. All the issues that I am seeing are related to your room. Right now I am only recommending MiniDSP's when using multiple subwoofers. The Dirac Upgrade will only be needed for tweaking the curve. Your charts look pretty good and that dip will not likely be present in all listening locations. Tony |
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Post by ansat on Jan 6, 2015 13:24:07 GMT -5
Added to main post To illustrate what Flavio is talking about. Here is a image that I pulled from the MiniDSP manual. As you can see, each measurement carries wild swings below 1k and this would be normal. The measurement that we are seeing in the Dirac LE is just the average line. I do not know if we will get this functionality in the full version.  quote] |
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Post by Thunderduck on Jan 7, 2015 8:19:07 GMT -5
Good Morning,
I wonder if it could be explained easily how to interpret the graphs Dirac generates when it comes to setting the crossover for speakers? I have attached the combined graphs for my Bic Fronts from the latest run and would like to know what crossover settings should be used.
Right now I have them set at 80, except for the fronts which are at 40. I forgot to change the front's settings when I changed speakers from the Def Techs to the Bics. Reason for change was that one of my woofers seems to have gone south in my left channel BP-7006.
Thank you for any help/suggestions.
Best Regards,
Steve
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Post by ansat on Jan 7, 2015 9:03:04 GMT -5
Good Morning,
I wonder if it could be explained easily how to interpret the graphs Dirac generates when it comes to setting the crossover for speakers? I have attached the combined graphs for my Bic Fronts from the latest run and would like to know what crossover settings should be used.
Right now I have them set at 80, except for the fronts which are at 40. I forgot to change the front's settings when I changed speakers from the Def Techs to the Bics. Reason for change was that one of my woofers seems to have gone south in my left channel BP-7006.
Thank you for any help/suggestions.
Best Regards,
Steve
View Attachment First of all, give definitive a call. They worked with me on out of warranty stuff before and their customer support is fantastic. For the chart and where to set the xover. The simple explanation is where the efore frequency drops 10db is the lowest possible xover. Since Dirac sets the delay to a single fixed point you cannot align time align to the crossover, you will want to try the xover at the drop, and test working your way higher until it sounds like a nice and smooth response. For your fronts, I would try 50, 60 ,70 and 80 Tony |
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