Deleted
Deleted Member
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Post by Deleted on Aug 31, 2014 23:56:05 GMT -5
Although I understand some recording engineers have unfortunately included signals above 120Hz in the LFE channel in some multi-channel music, by original definition, the LFE channel is supposed to include special increased output (10dB's louder) LF sound up to 120Hz only and is the .1 channel in 5.1 or 7.1 surround sound. In effect the 120Hz limit is a brick wall. Most content in the LFE channel starts to roll off at least by 80Hz. The large majority of LFE sound will be below 80Hz. In a properly recorded movie soundtrack there are no LFE signals above 120Hz. The fixed 120Hz low pass filter on the LFE channel is correct IMO. Don't confuse the LFE 0.1 channel bass with the bass that is re-directed to the sub from the other main 5 or 7 channels by the bass management system below a selected/designated frequency. In home pre-pro's the signal sent to the sub is a combination of the LFE channel and the re-directed lower bass. I don't disagree that 120hz is the correct setting. I just think it's surprising that the XMC-1 doesn't have an adjustable low pass filter. Most AVRs and processors have this, including Emotiva's past processors. If you agree that 120Hz is the correct setting then why should they have an adjustable low pass filter? Apparently it is because most AVR's and processors have it? I might would change most to some, but that is not a good reason IMO. There has been a lot of misunderstanding since way back about the LFE channel. That includes a number of manufacturers who seem to misunderstand also. Here is a link below from another forum (way too complicated for me to detail) that explains much of the confusion. This is an 8 year old thread but it shows the confusion back then that continues. If the source properly has no LFE signal information above 120Hz then there should be no need for an LFE low pass filter. If the LPF is this case is in fact set at 120Hz then I can't understand any objection other than to argue in circles. I'm only responding here since your comment about the LFE caught my attention. While we are on the subject, (I have no idea of your opinion on this), my thought is that stereo subwoofers are an unnecessary function and a misunderstanding of the basics of low bass playback below 80Hz or so. I agree with Igorzep when he states in the XMC Bass Managment Thread: True stereo sub is an oxymoron. As subwoofer is something that plays below the woofer, i.e. frequencies that are not localizable. And the term bass-management is also built on assumption you are working with non-localizable frequencies. Studies show us that sub with a crossover set @ less than 100Hz (80Hz typically) and 4-th order slope is not localizable. And "stereo" assumes localizability... There is so much posted in numerous pages in several threads about the XMC-1 and how it handles subs it makes ones head spin. I'll let my brief contribution end with this post and let others continue the discussions. www.avsforum.com/forum/91-audio-theory-setup-chat/748147-lfe-subwoofers-interconnects-explained.html
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Post by bluescale on Sept 1, 2014 2:15:50 GMT -5
If you agree that 120Hz is the correct setting then why should they have an adjustable low pass filter? Apparently it is because most AVR's and processors have it? I might would change most to some, but that is not a good reason IMO. There has been a lot of misunderstanding since way back about the LFE channel. That includes a number of manufacturers who seem to misunderstand also. Here is a link below from another forum (way too complicated for me to detail) that explains much of the confusion. This is an 8 year old thread but it shows the confusion back then that continues. If the source properly has no LFE signal information above 120Hz then there should be no need for an LFE low pass filter. If the LPF is this case is in fact set at 120Hz then I can't understand any objection other than to argue in circles. I'm only responding here since your comment about the LFE caught my attention. Let's go back and look at the context of my statement, since I didn't do a good job of explaining my meaning. Earlier, darien87 posted: He certainly seemed surprised by the lack of adjustable low pass filter, which is what I was commenting on when I said it was surprising. Right or wrong, most processors and AVRs in this price range (and many below) do have an adjustable low pass filter. After the conversation continued, I realized I hadn't been as clear as I could have, and my post came across as critical. That's why I later responded with: Note the bolded part. That was my attempt to clear up my poor wording earlier. I wasn't trying to argue in circles. I was just trying to show that I understood his surprise. While we are on the subject, (I have no idea of your opinion on this), my thought is that stereo subwoofers are an unnecessary function and a misunderstanding of the basics of low bass playback below 80Hz or so. I agree completely. That why I want Emotiva to get the dual-mono setting right, since that's so much more useful than stereo subwoofers.
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Post by aud on Sept 1, 2014 11:57:20 GMT -5
Have the testers ever encountered the Front Panel Display not level or square in relation to the Glass Panel Display. Just recently received my XMC-1 and finally got it hooked up. After booting up with the EMOTIVA logo displaying and looking perfectly level and square, when it changes to the operating display it shows up as not level. It slopes down from left to right.
I will be calling Emotiva tomorrow. It makes the whole component look cheap. Of course this is the way my luck always goes. I'm sure I'm the only person with this fundamental problem.
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Post by AudioHTIT on Sept 1, 2014 11:59:07 GMT -5
Have the testers ever encountered the Front Panel Display not level or square in relation to the Glass Panel Display. Just recently received my XMC-1 and finally got it hooked up. After booting up with the EMOTIVA logo displaying and looking perfectly level and square, when it changes to the operating display it shows up as not level. It slopes down from left to right. I will be calling Emotiva tomorrow. It makes the whole component look cheap. Of course this is the way my luck always goes. I'm sure I'm the only person with this fundamental problem. Can you take a level picture to show it?
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Post by aud on Sept 1, 2014 12:24:11 GMT -5
Thanks for the quick response audiohtit, see attached photo. Notice lower right corner of information display cut off. Attachment Deleted
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Post by AudioHTIT on Sept 1, 2014 12:56:19 GMT -5
Thanks for the quick response audiohtit, see attached photo. Notice lower right corner of information display cut off. As George Takei would say ... 'oh my!', you do need to call on that.
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Post by bluescale on Sept 1, 2014 13:25:15 GMT -5
Thanks for the quick response audiohtit, see attached photo. Notice lower right corner of information display cut off. View AttachmentYikes! Mine is perfectly square. I'm surprised that initial Emotiva Logo when it's booting is level. I'd think if the OLED panel isn't square, nothing on it will be level.
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Post by aud on Sept 1, 2014 14:05:50 GMT -5
Thanks for the quick response audiohtit, see attached photo. Notice lower right corner of information display cut off. View AttachmentYikes! Mine is perfectly square. I'm surprised that initial Emotiva Logo when it's booting is level. I'd think if the OLED panel isn't square, nothing on it will be level. That was baffling me as well. I didn't believe what I was seeing at first.
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Post by petew on Sept 1, 2014 14:54:24 GMT -5
Looks like the display isn't aligned with the front panel. QC Fail.
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Post by Dan Laufman on Sept 1, 2014 15:07:18 GMT -5
Have the testers ever encountered the Front Panel Display not level or square in relation to the Glass Panel Display. Just recently received my XMC-1 and finally got it hooked up. After booting up with the EMOTIVA logo displaying and looking perfectly level and square, when it changes to the operating display it shows up as not level. It slopes down from left to right. I will be calling Emotiva tomorrow. It makes the whole component look cheap. Of course this is the way my luck always goes. I'm sure I'm the only person with this fundamental problem. This is definitely not correct! Somehow the display has shifted during transit. Well issue a call tag and replace the unit. Please call in and ask for Janna tomorrow and she'll take care of you. There is a molded display carrier that perfectly aligns the display. It has either broken or come loose somehow. Sorry for the inconvenience.
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Sept 1, 2014 15:29:37 GMT -5
Got it now. Thanks for the clarification.
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Post by aud on Sept 1, 2014 16:15:15 GMT -5
Have the testers ever encountered the Front Panel Display not level or square in relation to the Glass Panel Display. Just recently received my XMC-1 and finally got it hooked up. After booting up with the EMOTIVA logo displaying and looking perfectly level and square, when it changes to the operating display it shows up as not level. It slopes down from left to right. I will be calling Emotiva tomorrow. It makes the whole component look cheap. Of course this is the way my luck always goes. I'm sure I'm the only person with this fundamental problem. This is definitely not correct! Somehow the display has shifted during transit. Well issue a call tag and replace the unit. Please call in and ask for Janna tomorrow and she'll take care of you. There is a molded display carrier that perfectly aligns the display. It has either broken or come loose somehow. Sorry for the inconvenience. Wow Dan you are the Man! This is why I'm a loyal customer and will remain so! I CAN'T THANK YOU ENOUGH!!!!
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,235
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Post by novisnick on Sept 1, 2014 16:21:58 GMT -5
Have the testers ever encountered the Front Panel Display not level or square in relation to the Glass Panel Display. Just recently received my XMC-1 and finally got it hooked up. After booting up with the EMOTIVA logo displaying and looking perfectly level and square, when it changes to the operating display it shows up as not level. It slopes down from left to right. I will be calling Emotiva tomorrow. It makes the whole component look cheap. Of course this is the way my luck always goes. I'm sure I'm the only person with this fundamental problem. This is definitely not correct! Somehow the display has shifted during transit. Well issue a call tag and replace the unit. Please call in and ask for Janna tomorrow and she'll take care of you. There is a molded display carrier that perfectly aligns the display. It has either broken or come loose somehow. Sorry for the inconvenience. Once again!,!!!! Big Dan @ your service,,,,,,,and on a holiday. what company or owner does this kind of thing??? I know!!,! The guy that loves his job, loves hhis passion, loves his friends ( customers,,,,, HEY ITS THE GUY THAT LOVES LIFE!!!!!! BIG DAN is the MAN!!!!
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Post by foggy1956 on Sept 1, 2014 16:32:54 GMT -5
This is definitely not correct! Somehow the display has shifted during transit. Well issue a call tag and replace the unit. Please call in and ask for Janna tomorrow and she'll take care of you. There is a molded display carrier that perfectly aligns the display. It has either broken or come loose somehow. Sorry for the inconvenience. Once again!,!!!! Big Dan @ your service,,,,,,,and on a holiday. what company or owner does this kind of thing??? I know!!,! The guy that loves his job, loves hhis passion, loves his friends ( customers,,,,, HEY ITS THE GUY THAT LOVES LIFE!!!!!! BIG DAN is the MAN!!!! Wish we could get his thoughts on the all stereo issue blue scale brought up
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,235
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Post by novisnick on Sept 1, 2014 16:36:36 GMT -5
Once again!,!!!! Big Dan @ your service,,,,,,,and on a holiday. what company or owner does this kind of thing??? I know!!,! The guy that loves his job, loves hhis passion, loves his friends ( customers,,,,, HEY ITS THE GUY THAT LOVES LIFE!!!!!! BIG DAN is the MAN!!!! Wish we could get his thoughts on the all stereo issue blue scale brought up Point me in that direction please, I missed the issue,,,,,,,also Well,,,,,,,,I guess there's only one Super Hero act at a time,,,,,,,he,,,,,,he,,,,,,,he,,,,,,, ,,,,,,,,,,,,technical?,,,,,,,,,isn't that Lonnie's domaine?
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Post by foggy1956 on Sept 1, 2014 16:42:49 GMT -5
Listed in the bugs post, he posted REW graphs
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Post by bluescale on Sept 1, 2014 16:56:40 GMT -5
Point me in that direction please, I missed the issue,,,,,,,also ,,,,,,,,,,,,technical?,,,,,,,,,isn't that Lonnie's domaine?[/quote] Here you go: emotivalounge.proboards.com/post/668121/threadAnd yes, I'd assume this is Lonnie's domain, but I'm sure Dan has the influence to give him a nudge if he finds it important enough to look into At Roger Dressler's suggestion, I'm going to try to redo some of the testing tonight with swept sine waves so it's easier to see. Also, I want to double check my work, as I was getting into sleepy territory at that point .
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Post by nickwin on Sept 4, 2014 17:46:22 GMT -5
Can the xmc play files off of a USB hard drive? If so what is the interface for selecting files like?
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Post by AudioHTIT on Sept 4, 2014 18:53:36 GMT -5
Can the xmc play files off of a USB hard drive? If so what is the interface for selecting files like? It's currently not officially supported, but the functionality is there and they're working on enabling it. Lonnie said some models might work now but I have no idea which, or what the UI looks like.
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lonman
Seeker Of Truth
Posts: 3
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Post by lonman on Sept 8, 2014 13:14:06 GMT -5
To change subjects. Still waiting for my name to come up as well. Just currious to other users. Has anyone compared the XMC-1 processing the 5.1 vs the oppo 105 outputs to see which sounds better.
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