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Post by megash0n on Sept 13, 2020 11:55:38 GMT -5
I'm not entirely sure whether this way a question or a comment. I'm a little confused. I'm the confused party. How and why is your laptop connected via HDMI while Dirac is engaged? My laptop uses wifi to communicate over the network. well, this may be another area of confusion for me as well. Since I'm so use to REW, I assumed the Dirac software was playing sweeps from my laptop over HDMI. It never occurred to me that it doesn't. Holy hell. Are you telling me that this happens from the Dirac engine or the G3P itself? If so, then I bet by me plugging in my laptop, and it showing 2.0, Dirac thinks it is stereo and not multichannel thus playing the subwoofer 10 db lower. This is totally logical which I can appreciate. I hate things that dont make sense.
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Post by marcl on Sept 13, 2020 12:10:48 GMT -5
I'm the confused party. How and why is your laptop connected via HDMI while Dirac is engaged? My laptop uses wifi to communicate over the network. well, this may be another area of confusion for me as well. Since I'm so use to REW, I assumed the Dirac software was playing sweeps from my laptop over HDMI. It never occurred to me that it doesn't. Holy hell. Are you telling me that this happens from the Dirac engine or the G3P itself? If so, then I bet by me plugging in my laptop, and it showing 2.0, Dirac thinks it is stereo and not multichannel thus playing the subwoofer 10 db lower. This is totally logical which I can appreciate. I hate things that dont make sense. Calm down I run Dirac from my PC. The PC is connected to the XMC-2 via HDMI. The PC is connected to the same switch that the Emotiva switch is connected to. Yes, Dirac tells the G3P to run the sweeps and they originate from the G3P, not from the PC. Once you Enable Dirac, the Dirac app in the PC is telling the G3P over ethernet what to do, irrespective of any input configurations on the G3P. The +10db thing for .1 channel in multichannel video content will not affect the Dirac measurements or levels for one important reason ... well, two ... One is that if the sub is used for Bass Management (which is usually the case) then Bass Management does NOT get the +10db boost. The second reason is that the +10db boost is part of the Dolby processing and should not be applied ahead of the Dolby processing or it would end up applied twice.
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Post by marcl on Sept 13, 2020 12:16:49 GMT -5
I've been doing a lot of reading on Dirac trying to determine what's going on with this subwoofer issue. Something else I read that I did not know is that Dirac doesn't actually boost any frequencies at all. If you have a dip, and keep a specific curve, then Dirac actually attenuates everything down to this dip as to flatten the curve if you will. This would explain why, when I "follow the dips" pretty closely, I have an overall higher spl for a given volume number. Secondly, as a test, I purposely brought down the entire curve by 3 or 4 db to accomplish something similar. I'm going to reset all my curves today and leave them alone with the exception of following a few bigger dips by 3 or 4 db and also leaving any natural voicing of the speakers in play as to not make them sound too dead. For example, if I have an 8 db dip at a frequency, I'm going to follow that down around 4 db allowing Dirac to attenuate everything else by 4 db. This leaves me flat with still having a 4 db dip instead of 8db dip. If any of this makes sense. In saying all of this, I am really confused where all the distortion came from prior to me remeasuring. It must have been a bug since Dirac supposedly isn't boosting. I also now better understand how people are able to use the Harmon curves without clipping or distortion. I assumed they were boosting. Did you read this thing about Dirac not boosting anything but rather lowering all levels to the nulls in Dirac literature or from someone else? I'm suspicious. Regarding the "natural voicing" ... I saw that in that article and I think it's puzzling how someone can talk about that without seeing the anechoic response of the speaker. I could never understand the idea that a flat response can be bad (Fletcher-Munson not withstanding). Toole found that the speakers that had the flattest anechoic response combined with uniform off-axis response were also judged to be the best sounding speakers in a real room. The speakers with these anechoic properties, when played in a good room, would then tend to measure like the famous Harman curve ... not because the speaker had the curve designed in, or because the system was EQ'ed to match the curve, but because the bass gain and treble attenuation of the room resulted in the mild slope.
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Post by megash0n on Sept 13, 2020 13:06:14 GMT -5
well, this may be another area of confusion for me as well. Since I'm so use to REW, I assumed the Dirac software was playing sweeps from my laptop over HDMI. It never occurred to me that it doesn't. Holy hell. Are you telling me that this happens from the Dirac engine or the G3P itself? If so, then I bet by me plugging in my laptop, and it showing 2.0, Dirac thinks it is stereo and not multichannel thus playing the subwoofer 10 db lower. This is totally logical which I can appreciate. I hate things that dont make sense. Calm down I run Dirac from my PC.Β The PC is connected to the XMC-2 via HDMI.Β The PC is connected to the same switch that the Emotiva switch is connected to.Β Yes, Dirac tells the G3P to run the sweeps and they originate from the G3P, not from the PC. Once you Enable Dirac, the Dirac app in the PC is telling the G3P over ethernet what to do, irrespective of any input configurations on the G3P. The +10db thing for .1 channel in multichannel video content will not affect the Dirac measurements or levels for one important reason ... well, two ... One is that if the sub is used for Bass Management (which is usually the case) then Bass Management does NOT get the +10db boost.Β The second reason is that the +10db boost is part of the Dolby processing and should not be applied ahead of the Dolby processing or it would end up applied twice. Regarding the 10 db, some instructions clearly state that, if a system is seen as 5.1 or higher, then Dirac plays the sub measurement 10 db higher. If it sees stereo, it does not. I'm just trying to understand why my non sub channels play louder than what they are on the volume calibration screen.
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Post by megash0n on Sept 13, 2020 13:12:03 GMT -5
I've been doing a lot of reading on Dirac trying to determine what's going on with this subwoofer issue. Something else I read that I did not know is that Dirac doesn't actually boost any frequencies at all. If you have a dip, and keep a specific curve, then Dirac actually attenuates everything down to this dip as to flatten the curve if you will. This would explain why, when I "follow the dips" pretty closely, I have an overall higher spl for a given volume number. Secondly, as a test, I purposely brought down the entire curve by 3 or 4 db to accomplish something similar. I'm going to reset all my curves today and leave them alone with the exception of following a few bigger dips by 3 or 4 db and also leaving any natural voicing of the speakers in play as to not make them sound too dead. For example, if I have an 8 db dip at a frequency, I'm going to follow that down around 4 db allowing Dirac to attenuate everything else by 4 db. This leaves me flat with still having a 4 db dip instead of 8db dip. If any of this makes sense. In saying all of this, I am really confused where all the distortion came from prior to me remeasuring. It must have been a bug since Dirac supposedly isn't boosting. I also now better understand how people are able to use the Harmon curves without clipping or distortion. I assumed they were boosting. Did you read this thing about Dirac not boosting anything but rather lowering all levels to the nulls in Dirac literature or from someone else?Β I'm suspicious.Β Regarding the "natural voicing" ... I saw that in that article and I think it's puzzling how someone can talk about that without seeing the anechoic response of the speaker.Β I could never understand the idea that a flat response can be bad (Fletcher-Munson not withstanding).Β Toole found that the speakers that had the flattest anechoic response combined with uniform off-axis response were also judged to be the best sounding speakers in a real room.Β The speakers with these anechoic properties, when played in a good room, would then tend to measure like the famous Harman curve ... not because the speaker had the curve designed in, or because the system was EQ'ed to match the curve, but because the bass gain and treble attenuation of the room resulted in the mild slope. I read this on the first several pages of the Dirac live thread on AVS. Doesn't mean it is true, but there are many convinced of this. And, to be honest, it makes a ton more sense than actually boosting which would cause distortion or clipping. Regarding the voicing, I'm sure most of it is preference. I can tell you that when I allow those areas to be flattened, it very noticeably degrades my perceived sound quality. Allowing them curve to come up 1 or 2 db thru that area brings the speakers back to life. Now, what I ideally need to do are some near field measurements to get a better look at what the speaker is actually doing. Try it out and see what you think. All I did was notice my T1s play about 1-2 db louder between 3-5k for example. So, I allow the curve to follow some. I may not have the frequency correct here because I'm typing from memory. You get the point though.
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Post by megash0n on Sept 13, 2020 13:36:18 GMT -5
An update to my attenuation post. I think it depends on how you view this. They do and they don't boost. This is my assertion.. By default, they take 10db away and allow for 10db of boost. So, in effect... They aren't really boosting. They are allowing you to keep some of the 10db they take if needed.
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Post by megash0n on Sept 13, 2020 14:54:55 GMT -5
well, this may be another area of confusion for me as well. Since I'm so use to REW, I assumed the Dirac software was playing sweeps from my laptop over HDMI. It never occurred to me that it doesn't. Holy hell. Are you telling me that this happens from the Dirac engine or the G3P itself? If so, then I bet by me plugging in my laptop, and it showing 2.0, Dirac thinks it is stereo and not multichannel thus playing the subwoofer 10 db lower. This is totally logical which I can appreciate. I hate things that dont make sense. Calm down I run Dirac from my PC.Β The PC is connected to the XMC-2 via HDMI.Β The PC is connected to the same switch that the Emotiva switch is connected to.Β Yes, Dirac tells the G3P to run the sweeps and they originate from the G3P, not from the PC. Once you Enable Dirac, the Dirac app in the PC is telling the G3P over ethernet what to do, irrespective of any input configurations on the G3P. The +10db thing for .1 channel in multichannel video content will not affect the Dirac measurements or levels for one important reason ... well, two ... One is that if the sub is used for Bass Management (which is usually the case) then Bass Management does NOT get the +10db boost.Β The second reason is that the +10db boost is part of the Dolby processing and should not be applied ahead of the Dolby processing or it would end up applied twice. I am running through all new measurements again without the HDMI cable. The behavior is the same. Just to rule out a possible pcm 2.0 issue, I turned the Xbox on to let it active atmos prior to activating Dirac. It is behaving the same way. When measuring, the subs are playing about 10 db lower than everything else. In the volume calibration screen, the subs are actually about 1 db louder than everything else. Edit: the subs are playing normal. Everything else is playing louder is how I should say that so I don't confuse this more.
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Post by ttocs on Sept 13, 2020 15:07:36 GMT -5
megash0n Another vid to show SPL during VolCal and Measurement screens. I reset the Max SPL recorded between speaker changes. The resulting curves show the sub about equal to the other speakers. This is to show the sub with one speaker. I chose to only show the two to reduce confusion. Also, this is one of the Width speakers, not my gooder speakers because I didn't feel like firing up the tube amps today.
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Post by megash0n on Sept 13, 2020 15:40:38 GMT -5
megash0n Another vid to show SPL during VolCal and Measurement screens. I reset the Max SPL recorded between speaker changes. The resulting curves show the sub about equal to the other speakers. This is to show the sub with one speaker. I chose to only show the two to reduce confusion. Also, this is one of the Width speakers, not my gooder speakers because I didn't feel like firing up the tube amps today. View Attachment Thank you very much for your effort in trying to help. Btw.. That's a nice meter! I don't mess with the sub on volume calibration screen. I adjust the gain on the amp, but I'm not sure if that really matters or not. I'm doing what you are doing otherwise. I am seeing how yours is also playing the sweeps roughly 16 db louder as you said previously. While this is odd in general, yours also plays your sub the same. My sub does not which is my problem. After going thru all new measurements today, I decided to add a couple more measurements and use the Harmon +8 db curve as a test. Man, it sounds really good. It maybe could use a hair more sparkle, but I think I need to just listen for a few days. I still have a little volume knob left, so I think we'll be ok there. I'm able to play music at 105ish db at around -9. I don't care to listen any louder than that. It's too loud as it is. I do like the headroom for movies though. The bass is definitely there in the subs. I'm a hair concerned about an LFE track though. About to test some Batman tracks to watch these red lights blink. Edit: I do feel like my sub playing lower is causing me to lose another 10 db of headroom when Dirac does its calculations. I can attempt to fix this by turning the sub amp gain all the way up before the sweeps, but I feel like that causes another set of problems.
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Post by bluescale on Sept 13, 2020 17:29:24 GMT -5
I am running through all new measurements again without the HDMI cable. The behavior is the same. Just to rule out a possible pcm 2.0 issue, I turned the Xbox on to let it active atmos prior to activating Dirac. It is behaving the same way. When measuring, the subs are playing about 10 db lower than everything else. In the volume calibration screen, the subs are actually about 1 db louder than everything else. Edit: the subs are playing normal. Everything else is playing louder is how I should say that so I don't confuse this more. There's no need to activate Atmos or anything along those lines. You're overcomplicating a process that's already be complicated enough. Dirac doesn't care about processing. If the speaker is enabled, it will measure it. How do I know? I unplugged every HDMI cable from the back of my XMC-2 and ran Dirac. All my speakers were seen and measured. Dirac is definitely playing the sweeps louder during the calibration than on the tone level setting page, but as far as I can tell, it's not impacting the measurements one bit on my end. I think it's just an oddity of the way Dirac works.
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Post by bluescale on Sept 13, 2020 17:36:51 GMT -5
Edit: I do feel like my sub playing lower is causing me to lose another 10 db of headroom when Dirac does its calculations. I can attempt to fix this by turning the sub amp gain all the way up before the sweeps, but I feel like that causes another set of problems. Yeah, bumping the sub gain after calibration would cause mismatched levels at the crossover point. Like you, I experienced some distortion after my initial Dirac run, so I need to rerun it. I haven't used my theater much at all because I was working on a project, and then western Oregon caught on fire and I've been living in a constant state of alertness, waiting to evacuate our home. Fortunately it looks like they're going to keep it out of our backyard, so tonight I'm going to let my guard down and maybe try messing around with Dirac and REW. I don't think I experienced any level mismatch issues like you did, but frankly I've barely used it since doing my calibration, so I'm not 100% sure.
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Post by megash0n on Sept 13, 2020 17:45:31 GMT -5
I am running through all new measurements again without the HDMI cable. The behavior is the same. Just to rule out a possible pcm 2.0 issue, I turned the Xbox on to let it active atmos prior to activating Dirac. It is behaving the same way. When measuring, the subs are playing about 10 db lower than everything else. In the volume calibration screen, the subs are actually about 1 db louder than everything else. Edit: the subs are playing normal. Everything else is playing louder is how I should say that so I don't confuse this more. There's no need to activate Atmos or anything along those lines. You're overcomplicating a process that's already be complicated enough. Dirac doesn't care about processing. If the speaker is enabled, it will measure it. How do I know? I unplugged every HDMI cable from the back of my XMC-2 and ran Dirac. All my speakers were seen and measured. Dirac is definitely playing the sweeps louder during the calibration than on the tone level setting page, but as far as I can tell, it's not impacting the measurements one bit on my end. I think it's just an oddity of the way Dirac works. I understand. We are taking about a processor that still has many issues, so I was trying to rule everything out with the Atmos thing. If it were playing the sweep for my sub at the same level it is playing the rest of the speakers, I'd be cool with it. But, it's not.
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Post by megash0n on Sept 13, 2020 17:47:29 GMT -5
Edit: I do feel like my sub playing lower is causing me to lose another 10 db of headroom when Dirac does its calculations. I can attempt to fix this by turning the sub amp gain all the way up before the sweeps, but I feel like that causes another set of problems. Yeah, bumping the sub gain after calibration would cause mismatched levels at the crossover point. Like you, I experienced some distortion after my initial Dirac run, so I need to rerun it. I haven't used my theater much at all because I was working on a project, and then western Oregon caught on fire and I've been living in a constant state of alertness, waiting to evacuate our home. Fortunately it looks like they're going to keep it out of our backyard, so tonight I'm going to let my guard down and maybe try messing around with Dirac and REW. I don't think I experienced any level mismatch issues like you did, but frankly I've barely used it since doing my calibration, so I'm not 100% sure. good luck on your measurements! When doing the sweeps, see if your sub is measuring lower than the rest. So far, I seem to be the only one with this issue.
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Post by Uncle Taiji on Sept 13, 2020 17:53:50 GMT -5
OPERATIONAL DEFINITIONS, MEASUREMENTS AND OTHER TORMENTS
I have an XMC-2; and, have had Emotiva Pre/Pros 'since the beginning.' There were certainly pre/pro issues at the very beginning. I've been following this thread religiously since its inception. One of the great problems in technical discussions is transparency in the matter of 'operational definitions', i.e. exactly what are you doing to obtain the results you see? Have you heard the good joke "Thinking is like hard work, only not as satisfying"? Maintaining the rigor of an operational definition of a test methodology is hard. Sometimes you actually have to write down or otherwise archive data for later inspection. More hard work.
Coming from a university research psychology background, I began my 'semi-anechoic' acoustic measurements in 1993 or so using Bill Walso's "IMP/MLS" computer-based system. Then through Walso's "LAUD" and "Praxis" measurement systems. Now of course "REW" blows most everything else away - and 'free' makes it so much more special (I've donated). Along the way I created "The Bohlender-Graebener RD-75 Dipole Baffle Study" which was later part of my now-defunct "Acoustic Line Source Research" website. The Dipole Baffle Study measurements were done in a huge gymnasium and a large auditorium (for suspended-in-air anechoic measurements).
I fully concur with the notion that it is optimal to start evaluation of an 'in-room' frequency response with an anechoic (or semi-anechoic) frequency response - which is very difficult to obtain in real life. Putting my money where my mouth is so to speak, I am just finishing a back yard remodel 'Summer of Pandemic' combination taijiquan court and loudspeaker measurement area. The 'first reflection' (time of flight) is always the problem for gaining adequate resolution in an anechoic measurement. In the huge gymnasium sound reflections were quite evident - they just took longer to arrive, and hence allowed for greater frequency resolution of the FFTs deriving the frequency response.
Ahem ... you could 'see' impulse reflections in the data from microphone stands. It takes a while to learn to interpret.
Have you heard the reputed Oscar Wilde comment that 'It isn't so much what a talking dog says, what matters is that the talking dog says anything at all.' (There's also the Ben Johnson's take on female preachers.) What seems amazing is that Dirac (and the others) can make much sense of in-room 'chirp' measurements at all.
Letting others know 'exactly' your operational definitions is necessary for good communication and reliable replication of methodology. The thread seems to be working its way through repeatability measures.
It isn't widely discussed, but the 'faith-based' assumptions defined by philosophers of science go something like this:
1. It is assumed that there is order in the Universe. 2. It is assumed that humans can ascertain that order. 3. It is further assumed that humans can understand the discovered order in the Universe.
[Have you paid any attention recently to either the micro or macro universe? Folks are having a real hard time making sense of, for instance, "dark matter" and "dark energy." Best to be humble in one's ignorance.]
I have observed in this thread that there are significant attempts by others to ascertain the 'order' in the Dirac methodology. So let me cheer you 'explorers of the unknown Dirac World' onward. Since I am comfortable getting some other projects done before 'going all Dirac" I will benefit from your ongoing work. Bravo! Free is good as I said.
So please write clearly to your 'peanut gallery'(me et. al.) audience. Be good audiophile scientists. This Dirac system (and others) didn't exist in 1993 when I started loudspeaker measuring. Things have come a long way since then. A very long way! Sadly the difficulty in keeping track of 'the variables' never goes away.
Yours in science, John Old School
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Post by ttocs on Sept 13, 2020 18:04:32 GMT -5
Thank you very much for your effort in trying to help. Btw.. That's a nice meter! I don't mess with the sub on volume calibration screen. I adjust the gain on the amp, but I'm not sure if that really matters or not. I'm doing what you are doing otherwise. I am seeing how yours is also playing the sweeps roughly 16 db louder as you said previously. While this is odd in general, yours also plays your sub the same. My sub does not which is my problem. Bummer, I can't give you a smiley face because you didn't get 100% on the quiz. My first grade teacher, Mrs Queer (Yes, her real name, nice lady. My second grade teacher was Miss Toth, mean lady who would take our marbles if she saw us playing with them (kid's perspective about the "mean" accusation, as an adult I know she was nice).) used to draw a smiley face on our quizzes for getting 100% correct. But I can give you an E for effort like she would do for those who gave a good try. If you study the video you'll notice that the subs played about 10dB higher than the other speakers during VolCal, but payed roughly the same as the other speakers during Measurement sweeps. So the normal speakers played at 67dB and the sub was at 77dB during VolCal. The speakers played at 83-86dB for the most part during Measurements. So while they played the same for measurements, there was a 10dB difference in calibration. I don't setup the sub by SPL meter. I use the Dirac green scale on the sliders to get the speakers and subs all the "same" according to Dirac. So what the video shows is that even though Dirac "says" the subs match the other speakers, the subs in fact are playing 10dB higher in reality.
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Post by megash0n on Sept 13, 2020 18:14:52 GMT -5
Thank you very much for your effort in trying to help. Btw.. That's a nice meter! I don't mess with the sub on volume calibration screen. I adjust the gain on the amp, but I'm not sure if that really matters or not. I'm doing what you are doing otherwise. I am seeing how yours is also playing the sweeps roughly 16 db louder as you said previously. While this is odd in general, yours also plays your sub the same. My sub does not which is my problem. Bummer, I can't give you a smiley face because you didn't get 100% on the quiz. My first grade teacher, Mrs Queer (Yes, her real name, nice lady. My second grade teacher was Miss Toth, mean lady who would take our marbles if she saw us playing with them (kid's perspective about the "mean" accusation, as an adult I know she was nice).) used to draw a smiley face on our quizzes for getting 100% correct. But I can give you an E for effort like she would do for those who gave a good try. If you study the video you'll notice that the subs played about 10dB higher than the other speakers during VolCal, but payed roughly the same as the other speakers during Measurement sweeps. So the normal speakers played at 67dB and the sub was at 77dB during VolCal. The speakers played at 83-86dB for the most part during Measurements. So while they played the same for measurements, there was a 10dB difference in calibration. I don't setup the sub by SPL meter. I use the Dirac green scale on the sliders to get the speakers and subs all the "same" according to Dirac. So what the video shows is that even though Dirac "says" the subs match the other speakers, the subs in fact are playing 10dB higher in reality. You know...i did see they were higher at one point, but I thought you were still going back and forth leveling them all. Once you started doing this, I skipped about 10 seconds of the video and just assumed you were making them all level. Thanks for pointing that out. I do believe I'm even more confused now. Just for clarity on what you are doing, are you saying that, when measuring, your subs are potentially 10 db louder, then Dirac is potentially doing the same thing it is doing to mine but yours ends up being equal because you had the built in 10 db extra? I hope that makes sense. If I max my amp gain, mine measures 10 db higher on the volume screen, but basically equal on the measurements screen.
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Post by bluescale on Sept 13, 2020 18:17:19 GMT -5
good luck on your measurements! When doing the sweeps, see if your sub is measuring lower than the rest. So far, I seem to be the only one with this issue. I plan to observe that, but I'm pretty sure I already know that the subs play lower during the sweeps. I don't think that's a problem, though as the level during the sweeps doesn't matter. For example, if you run a measurement, and then run into clipping on the next measurement, you can go back to the level setting screen, drop the level of the clipping speaker, and then continue your measurements without having to remeasure your previous sweeps. I haven't thought through (or researched) the *why* of how that works, but it does.
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Post by bluescale on Sept 13, 2020 18:19:47 GMT -5
But, and this is the important thing, I haven't gone back to REW to make sure everything is correct once it's all done. In the XMC-1 I know it was correct, but I haven't verified with the XMC-2. Hopefully I will tonight.
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Post by megash0n on Sept 13, 2020 18:54:46 GMT -5
good luck on your measurements! When doing the sweeps, see if your sub is measuring lower than the rest. So far, I seem to be the only one with this issue. I plan to observe that, but I'm pretty sure I already know that the subs play lower during the sweeps. I don't think that's a problem, though as the level during the sweeps doesn't matter. For example, if you run a measurement, and then run into clipping on the next measurement, you can go back to the level setting screen, drop the level of the clipping speaker, and then continue your measurements without having to remeasure your previous sweeps. I haven't thought through (or researched) the *why* of how that works, but it does. My concern is that it will attenuate all speakers down to the subwoofer because of this.. And then, another 10db because it supposedly does this for headroom. If I crank my sub amp gain all the way up, which makes the subs play with the rest, my overall volume is about 10 db higher afterwards. Meaning, I will watch a movie at -15 instead of -5. If it weren't for countless bugs for so long, I might not question it, but any time something doesn't make sense, I ask questions. βΊ
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Post by ttocs on Sept 13, 2020 18:55:46 GMT -5
So what the video shows is that even though Dirac "says" the subs match the other speakers, the subs in fact are playing 10dB higher in reality. You know...i did see they were higher at one point, but I thought you were still going back and forth leveling them all. Once you started doing this, I skipped about 10 seconds of the video and just assumed you were making them all level. Thanks for pointing that out. I do believe I'm even more confused now. Just for clarity on what you are doing, are you saying that, when measuring, your subs are potentially 10 db louder, then Dirac is potentially doing the same thing it is doing to mine but yours ends up being equal because you had the built in 10 db extra? I hope that makes sense. If I max my amp gain, mine measures 10 db higher on the volume screen, but basically equal on the measurements screen. Here are a couple screen grabs of the subs SPL and speaker SPL during the volume calibration. This is where you can see that the subs are ACTUALLY 10dB higher than speakers. Notice in the first photo, which is after all the other speakers have been leveled, that all the sliders are showing the same (within about 1dB) level "according to Dirac". Again, I'm using the Dirac sliders to adjust everything the same which is about -22dB on every slider including the subs. SPEAKERS: 67dB; SUBS: 77dB. During the Measurement sweeps, the speakers and subs play about the same SPL. SPEAKERS: 84dB; SUBS: 84dB. edit: I let Dirac do what it wants without any intervention on my part.
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