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Post by kahodges1721 on May 4, 2020 6:24:02 GMT -5
Has anyone else ran REW sweeps using the Xmc2? I’m shocked there doesn’t seem to be as many as I expected. I just bought a miniDSP 2x4HD but haven't used it yet, so I don't have any experience with it. I've been following your journey in hopes of learning about what to expect. I can try something simple to begin with to see if I can help, but I would need to know what to do. I have a MacBook Pro so if a Windows computer is needed then that's gonna be a little tough. I've got some old ones running XP I can maybe use, but it's a bit sketchy. I will be more than happy to walk you through it. It’s actually very easy to setup and start taking measurements. When you first get started it may seem a little overwhelming but it’s actually pretty easy. Here is a forum I found talking about setting up REW for MAC. I’ve always been a PC guys so can’t say I’m well versed in setting it up on MAC. Hopefully this link will help. www.google.com/amp/s/www.avsforum.com/forum/113-subwoofers-bass-transducers/3075106-rew-macos-how-setup-your-mac-rew.html%3famp=1I have not tried to bypass the mini dsp but this is the same minidsp I’ve been using for years and it would be very odd to see a lingering filter that comes and goes with the receiver. My amps for the subs do not have rca inputs and I do not have xlr cables long enough to bypass the minidsp currently but I really doubt that’s it. I’m away from my computer right now but can send some tomorrow. Basically I used an unused preset opened the PEQ to ensure no filters on any channel and then opened the filters and bypassed everything. These subs are on input 1 but output of subs are on input 1 and 2. Both show the same thing when measured individually by turning one off at a time in the minidsp. Input 1 typically defaults to a low pass at 1000 and input 2 defaults to a high pass at 1000hz so i would expect one to play correct and the other not play at all if that was forgotten...which I’ve done before for sure! Lol. Since it was affecting both I thought it may be something applied on the input but nope nothing there. I say all of this but there is a very important statement I made and that is the LFE channel follows the center channel crossover. So basically you can get it to work by moving the crossover to 200hz BUT the graph shouldn’t change based on any crossover since it’s the LFE signal. There isn’t a setting to change the LFE low pass from what I can see in the Xmc2 so sending the LFE should be the same every time. Now I know the next question is are you sure the LFE isn’t getting messed up and it’s sending the center channel instead...well I tested that also thinking the same. For example let’s move the crossover down to 60hz and send a sweep on LFE (hdmi4) from 0-1000 I would expect that if it was sending the center instead that after 60hz or at some point the center would pick up and start playing. It doesn’t only the sub plays as it should. Has anyone else ran REW sweeps using the Xmc2? I’m shocked there doesn’t seem to be as many as I expected. I'm hoping my xmc-2 shows this week, I run 2 subs through a 2x4 advanced, I will run a sweep as soon as I get things set up. What happens if you run a sweep on your left front speaker while that output from the xmc is plugged into your subs? All of my cables are cut to length. Which is great for keeping things tidy but the issue is the sub uses the minidsp which required me to build a xlr to rca cable while the rest of my speakers are fed to either a DR3 or XPA7 amp so XLR to XLR. I don’t have any of those xlr to rca adaptors either unfortunately. I’m willing to venture a guess that it would likely play as expected since my towers can play down to 30hz I would expect the subs to play the same. If this is checking if something is going on in the mini dsp you can use the input level screen to see what signal level is being sent. This will give you a good idea of it’s pretty or post minidsp. All roads lead to something is up with the LFE signal. Either is the signal coming from REW itself which would be quite odd or a crossover is getting stuck and being applied in the XMC on LFE when it shouldn’t |
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Post by foggy1956 on May 4, 2020 7:32:43 GMT -5
I just bought a miniDSP 2x4HD but haven't used it yet, so I don't have any experience with it. I've been following your journey in hopes of learning about what to expect. I can try something simple to begin with to see if I can help, but I would need to know what to do. I have a MacBook Pro so if a Windows computer is needed then that's gonna be a little tough. I've got some old ones running XP I can maybe use, but it's a bit sketchy. I will be more than happy to walk you through it. It’s actually very easy to setup and start taking measurements. When you first get started it may seem a little overwhelming but it’s actually pretty easy. Here is a forum I found talking about setting up REW for MAC. I’ve always been a PC guys so can’t say I’m well versed in setting it up on MAC. Hopefully this link will help. www.google.com/amp/s/www.avsforum.com/forum/113-subwoofers-bass-transducers/3075106-rew-macos-how-setup-your-mac-rew.html%3famp=1I'm hoping my xmc-2 shows this week, I run 2 subs through a 2x4 advanced, I will run a sweep as soon as I get things set up. What happens if you run a sweep on your left front speaker while that output from the xmc is plugged into your subs? All of my cables are cut to length. Which is great for keeping things tidy but the issue is the sub uses the minidsp which required me to build a xlr to rca cable while the rest of my speakers are fed to either a DR3 or XPA7 amp so XLR to XLR. I don’t have any of those xlr to rca adaptors either unfortunately. I’m willing to venture a guess that it would likely play as expected since my towers can play down to 30hz I would expect the subs to play the same. If this is checking if something is going on in the mini dsp you can use the input level screen to see what signal level is being sent. This will give you a good idea of it’s pretty or post minidsp. All roads lead to something is up with the LFE signal. Either is the signal coming from REW itself which would be quite odd or a crossover is getting stuck and being applied in the XMC on LFE when it shouldn’t The reason to use any other output from the xmc would be to verify the problem is in the xmc, center dub output. It should be possible to plug the current cable going to the minidsp into some other output from the xmc, no? |
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Post by megash0n on May 4, 2020 7:56:44 GMT -5
Yep, those settings are all correct, which isn't surprising since you've got a lot of experience with REW. Have you tried bypassing the miniDSP, just as a test? While it's unlikely, perhaps something's gone wonky there. If connecting the subs directly to the XMC-2 doesn't work, or if you can't do that for whatever reason, screenshots of your input and output settings on the miniDSP might be useful. I'm grasping at straws, since it all works fine with your old processor, but might as well look at the basics. I think your next step is to try a factory reset on the XMC-2 to see if that makes a difference. I have not tried to bypass the mini dsp but this is the same minidsp I’ve been using for years and it would be very odd to see a lingering filter that comes and goes with the receiver. My amps for the subs do not have rca inputs and I do not have xlr cables long enough to bypass the minidsp currently but I really doubt that’s it. I’m away from my computer right now but can send some tomorrow. Basically I used an unused preset opened the PEQ to ensure no filters on any channel and then opened the filters and bypassed everything. These subs are on input 1 but output of subs are on input 1 and 2. Both show the same thing when measured individually by turning one off at a time in the minidsp. Input 1 typically defaults to a low pass at 1000 and input 2 defaults to a high pass at 1000hz so i would expect one to play correct and the other not play at all if that was forgotten...which I’ve done before for sure! Lol. Since it was affecting both I thought it may be something applied on the input but nope nothing there. I say all of this but there is a very important statement I made and that is the LFE channel follows the center channel crossover. So basically you can get it to work by moving the crossover to 200hz BUT the graph shouldn’t change based on any crossover since it’s the LFE signal. There isn’t a setting to change the LFE low pass from what I can see in the Xmc2 so sending the LFE should be the same every time. Now I know the next question is are you sure the LFE isn’t getting messed up and it’s sending the center channel instead...well I tested that also thinking the same. For example let’s move the crossover down to 60hz and send a sweep on LFE (hdmi4) from 0-1000 I would expect that if it was sending the center instead that after 60hz or at some point the center would pick up and start playing. It doesn’t only the sub plays as it should. Has anyone else ran REW sweeps using the Xmc2? I’m shocked there doesn’t seem to be as many as I expected. With all due respect, I keep saying this and you keep not hearing it. You aren't sending and lfe encoded signal. You are sending (routing) a PCM encoded signal to the center sub in this test. Think about this for a minute. If I am correct, doesn't it precisely explain what you are seeing? |
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Post by megash0n on May 4, 2020 7:59:58 GMT -5
Has anyone else ran REW sweeps using the Xmc2? I’m shocked there doesn’t seem to be as many as I expected. I just bought a miniDSP 2x4HD but haven't used it yet, so I don't have any experience with it. I've been following your journey in hopes of learning about what to expect. I can try something simple to begin with to see if I can help, but I would need to know what to do. I have a MacBook Pro so if a Windows computer is needed then that's gonna be a little tough. I've got some old ones running XP I can maybe use, but it's a bit sketchy. I've been using a balanced 2x4 coming out of the center sub for months on the RMC. No issues at all. |
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Post by megash0n on May 4, 2020 8:06:03 GMT -5
I have not tried to bypass the mini dsp but this is the same minidsp I’ve been using for years and it would be very odd to see a lingering filter that comes and goes with the receiver. My amps for the subs do not have rca inputs and I do not have xlr cables long enough to bypass the minidsp currently but I really doubt that’s it. I’m away from my computer right now but can send some tomorrow. Basically I used an unused preset opened the PEQ to ensure no filters on any channel and then opened the filters and bypassed everything. These subs are on input 1 but output of subs are on input 1 and 2. Both show the same thing when measured individually by turning one off at a time in the minidsp. Input 1 typically defaults to a low pass at 1000 and input 2 defaults to a high pass at 1000hz so i would expect one to play correct and the other not play at all if that was forgotten...which I’ve done before for sure! Lol. Since it was affecting both I thought it may be something applied on the input but nope nothing there. I say all of this but there is a very important statement I made and that is the LFE channel follows the center channel crossover. So basically you can get it to work by moving the crossover to 200hz BUT the graph shouldn’t change based on any crossover since it’s the LFE signal. There isn’t a setting to change the LFE low pass from what I can see in the Xmc2 so sending the LFE should be the same every time. Now I know the next question is are you sure the LFE isn’t getting messed up and it’s sending the center channel instead...well I tested that also thinking the same. For example let’s move the crossover down to 60hz and send a sweep on LFE (hdmi4) from 0-1000 I would expect that if it was sending the center instead that after 60hz or at some point the center would pick up and start playing. It doesn’t only the sub plays as it should. Has anyone else ran REW sweeps using the Xmc2? I’m shocked there doesn’t seem to be as many as I expected. I'm hoping my xmc-2 shows this week, I run 2 subs through a 2x4 advanced, I will run a sweep as soon as I get things set up. What happens if you run a sweep on your left front speaker while that output from the xmc is plugged into your subs? I've been wondering the same or similar. |
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Post by kahodges1721 on May 4, 2020 8:08:16 GMT -5
I have not tried to bypass the mini dsp but this is the same minidsp I’ve been using for years and it would be very odd to see a lingering filter that comes and goes with the receiver. My amps for the subs do not have rca inputs and I do not have xlr cables long enough to bypass the minidsp currently but I really doubt that’s it. I’m away from my computer right now but can send some tomorrow. Basically I used an unused preset opened the PEQ to ensure no filters on any channel and then opened the filters and bypassed everything. These subs are on input 1 but output of subs are on input 1 and 2. Both show the same thing when measured individually by turning one off at a time in the minidsp. Input 1 typically defaults to a low pass at 1000 and input 2 defaults to a high pass at 1000hz so i would expect one to play correct and the other not play at all if that was forgotten...which I’ve done before for sure! Lol. Since it was affecting both I thought it may be something applied on the input but nope nothing there. I say all of this but there is a very important statement I made and that is the LFE channel follows the center channel crossover. So basically you can get it to work by moving the crossover to 200hz BUT the graph shouldn’t change based on any crossover since it’s the LFE signal. There isn’t a setting to change the LFE low pass from what I can see in the Xmc2 so sending the LFE should be the same every time. Now I know the next question is are you sure the LFE isn’t getting messed up and it’s sending the center channel instead...well I tested that also thinking the same. For example let’s move the crossover down to 60hz and send a sweep on LFE (hdmi4) from 0-1000 I would expect that if it was sending the center instead that after 60hz or at some point the center would pick up and start playing. It doesn’t only the sub plays as it should. Has anyone else ran REW sweeps using the Xmc2? I’m shocked there doesn’t seem to be as many as I expected. With all due respect, I keep saying this and you keep not hearing it. You aren't sending and lfe encoded signal. You are sending (routing) a PCM encoded signal to the center sub in this test. Think about this for a minute. If I am correct, doesn't it precisely explain what you are seeing? I hear you and ran test to see if that is what is going on. Take a read in the post you quoted from me. Wouldn’t that stand true that the center would then begin to play if it’s not encoded LFE like it is stated it is? I also don’t see the need to bypass the minidsp when I’m doing the same thing on a different AVR and it works perfectly? I’m willing to do it but it’s a pain in the but to get to everything and I’m just not sure what I would be testing that I haven’t tested already or rules out by using a different avr? Can you please explain in more detail? |
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Post by kahodges1721 on May 4, 2020 8:10:51 GMT -5
I just bought a miniDSP 2x4HD but haven't used it yet, so I don't have any experience with it. I've been following your journey in hopes of learning about what to expect. I can try something simple to begin with to see if I can help, but I would need to know what to do. I have a MacBook Pro so if a Windows computer is needed then that's gonna be a little tough. I've got some old ones running XP I can maybe use, but it's a bit sketchy. I've been using a balanced 2x4 coming out of the center sub for months on the RMC. No issues at all. Do you have any measurements that can confirm that LFE is being sent all the way up to the 120hz filter? I’ve been using it also for months and it works it wasn’t until doing this that it was noticed that it may be filtering the higher frequency LFE signals. Same could be happening and you just not know it bc it would be very hard to just hear it as if it doesn’t come through you might not realize there was suppose to be more LFE content than what you are hearing unless you have the track memorized. |
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Post by megash0n on May 4, 2020 8:19:14 GMT -5
With all due respect, I keep saying this and you keep not hearing it. You aren't sending and lfe encoded signal. You are sending (routing) a PCM encoded signal to the center sub in this test. Think about this for a minute. If I am correct, doesn't it precisely explain what you are seeing? I hear you and ran test to see if that is what is going on. Take a read in the post you quoted from me. Wouldn’t that stand true that the center would then begin to play if it’s not encoded LFE like it is stated it is? I also don’t see the need to bypass the minidsp when I’m doing the same thing on a different AVR and it works perfectly? I’m willing to do it but it’s a pain in the but to get to everything and I’m just not sure what I would be testing that I haven’t tested already or rules out by using a different avr? Can you please explain in more detail? I'm confused on the other avr as well, and that's why I've waited so long to say that. In my opinion, your center sub should be set to mono. In REW, you wouldn't be testing the "LFE channel". You would just pick any other speaker set to small, crank the crossover all the way up, and then measure a sweep from 15 to 200. Also, I'd unplug the other speaker you are testing so the it doesn't interfere with the sweep. This is your sub measurement. Is there a need to go above this? Maybe set a 24/db slope momentarily so it starts tapering off later. Receiving a real LFE signal, from an encoded stream, it will adhere to the same eq and timing you have set in the minidsp. You last possible concern is that LFE isn't working correctly because the way you are trying to test makes it look like it is following another speaker's crossover point. I just don't see how this is possible, but it doesn't mean something isn't wrong. Have you looked at the ASIO control panel to make should there's nothing in there? I remember having some issues and finding out I set the control panel up wrong. |
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Post by megash0n on May 4, 2020 8:21:48 GMT -5
I've been using a balanced 2x4 coming out of the center sub for months on the RMC. No issues at all. Do you have any measurements that can confirm that LFE is being sent all the way up to the 120hz filter? I’ve been using it also for months and it works it wasn’t until doing this that it was noticed that it may be filtering the higher frequency LFE signals. Same could be happening and you just not know it bc it would be very hard to just hear it as if it doesn’t come through you might not realize there was suppose to be more LFE content than what you are hearing unless you have the track memorized. I don't measure the way you do. I use the method I described. Similar to Keith and a few others have mentioned. I tried the ASIO drivers and they crashed my sound card. I may try again in a day or two because now I'm curious |
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Post by kahodges1721 on May 4, 2020 8:26:40 GMT -5
Do you have any measurements that can confirm that LFE is being sent all the way up to the 120hz filter? I’ve been using it also for months and it works it wasn’t until doing this that it was noticed that it may be filtering the higher frequency LFE signals. Same could be happening and you just not know it bc it would be very hard to just hear it as if it doesn’t come through you might not realize there was suppose to be more LFE content than what you are hearing unless you have the track memorized. I don't measure the way you do. I use the method I described. Similar to Keith and a few others have mentioned. I tried the ASIO drivers and they crashed my sound card. I may try again in a day or two because now I'm curious But that’s just it doing it that way You would never know there was an issue even if it exists. You would only confirm that the crossover is working not that the LFE signal is not being filtered also. See what I’m saying now? |
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Post by kahodges1721 on May 4, 2020 8:32:12 GMT -5
I hear you and ran test to see if that is what is going on. Take a read in the post you quoted from me. Wouldn’t that stand true that the center would then begin to play if it’s not encoded LFE like it is stated it is? I also don’t see the need to bypass the minidsp when I’m doing the same thing on a different AVR and it works perfectly? I’m willing to do it but it’s a pain in the but to get to everything and I’m just not sure what I would be testing that I haven’t tested already or rules out by using a different avr? Can you please explain in more detail? I'm confused on the other avr as well, and that's why I've waited so long to say that. In my opinion, your center sub should be set to mono. In REW, you wouldn't be testing the "LFE channel". You would just pick any other speaker set to small, crank the crossover all the way up, and then measure a sweep from 15 to 200. Also, I'd unplug the other speaker you are testing so the it doesn't interfere with the sweep. This is your sub measurement. Is there a need to go above this? Maybe set a 24/db slope momentarily so it starts tapering off later. Receiving a real LFE signal, from an encoded stream, it will adhere to the same eq and timing you have set in the minidsp. You last possible concern is that LFE isn't working correctly because the way you are trying to test makes it look like it is following another speaker's crossover point. I just don't see how this is possible, but it doesn't mean something isn't wrong. Have you looked at the ASIO control panel to make should there's nothing in there? I remember having some issues and finding out I set the control panel up wrong. My concern is not that the crossover is working properly. In my test it seems to be working fine which is why the test as you describe won’t provide me much meaningful data. The only issue I see is that the LFE signal is being filtered to the same crossover that is being applied to the center channel. Until there is a better way then sending the signal via REW to confirm I don’t see how any other test are beneficial. I also reached out to John and Austin Jerry to confirm that HDMI4 is encoded so we will see what they say |
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Post by megash0n on May 4, 2020 9:13:39 GMT -5
I'm confused on the other avr as well, and that's why I've waited so long to say that. In my opinion, your center sub should be set to mono. In REW, you wouldn't be testing the "LFE channel". You would just pick any other speaker set to small, crank the crossover all the way up, and then measure a sweep from 15 to 200. Also, I'd unplug the other speaker you are testing so the it doesn't interfere with the sweep. This is your sub measurement. Is there a need to go above this? Maybe set a 24/db slope momentarily so it starts tapering off later. Receiving a real LFE signal, from an encoded stream, it will adhere to the same eq and timing you have set in the minidsp. You last possible concern is that LFE isn't working correctly because the way you are trying to test makes it look like it is following another speaker's crossover point. I just don't see how this is possible, but it doesn't mean something isn't wrong. Have you looked at the ASIO control panel to make should there's nothing in there? I remember having some issues and finding out I set the control panel up wrong. My concern is not that the crossover is working properly. In my test it seems to be working fine which is why the test as you describe won’t provide me much meaningful data. The only issue I see is that the LFE signal is being filtered to the same crossover that is being applied to the center channel. Until there is a better way then sending the signal via REW to confirm I don’t see how any other test are beneficial. I also reached out to John and Austin Jerry to confirm that HDMI4 is encoded so we will see what they say No, I see what you are saying. Sorry if this is on a graph above, but have you ran a full sweep? If so, do anything come out of any other channel? Obviously they would all have to be turned on. You say this seems to be tied to the center channel crossover. Does sound above this crossover come out of the center? Are there any differences between setting the sub to mono or lfe? Lastly, you are backing out far enough in the menu for settings changes to work, correct? You'd have to at some point, but I wanted to check. Somewhere in the presets section requires you to back out one level before it takes the value. Regardless, I can't imagine why you would want anything but mono with the way you have everything. Unless, you are planning to run enhanced bass which I normally think causes more issues with alignment. But, that's just my opinion. I'll try to find some time today to test this. It will be later though as my morning is booked. This is also assuming I can get the ASIO drivers to work. |
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Post by kahodges1721 on May 4, 2020 9:56:49 GMT -5
My concern is not that the crossover is working properly. In my test it seems to be working fine which is why the test as you describe won’t provide me much meaningful data. The only issue I see is that the LFE signal is being filtered to the same crossover that is being applied to the center channel. Until there is a better way then sending the signal via REW to confirm I don’t see how any other test are beneficial. I also reached out to John and Austin Jerry to confirm that HDMI4 is encoded so we will see what they say No, I see what you are saying. Sorry if this is on a graph above, but have you ran a full sweep? If so, do anything come out of any other channel? Obviously they would all have to be turned on. You say this seems to be tied to the center channel crossover. Does sound above this crossover come out of the center? Are there any differences between setting the sub to mono or lfe? Lastly, you are backing out far enough in the menu for settings changes to work, correct? You'd have to at some point, but I wanted to check. Somewhere in the presets section requires you to back out one level before it takes the value. Regardless, I can't imagine why you would want anything but mono with the way you have everything. Unless, you are planning to run enhanced bass which I normally think causes more issues with alignment. But, that's just my opinion. I'll try to find some time today to test this. It will be later though as my morning is booked. This is also assuming I can get the ASIO drivers to work. Problem solved! I did a factory reset and ran some test and the issue still existed. I then reflashed firmware 1.9 cause why not right? And boom everything is now working as it should. Here is an example of the graph I posted yesterday that was clearly applying a crossover. I was able to alter the graph by changing the center crossover setting up and down which should not be the case as I was describing. Now with the new install of 1.9 here are the new graphs with different crossover setting and switching between mono and LFE they are all the same! As they should be. Hopefully seeing this graph will help those who were following understand what I’ve been trying to say all along. Just for clarity same all measurements were taken from the same location. Right at the mouth of the horn. This was not to apply filters for minidsp only to verify design work. Attachments:
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Post by geebo on May 4, 2020 10:17:31 GMT -5
No, I see what you are saying. Sorry if this is on a graph above, but have you ran a full sweep? If so, do anything come out of any other channel? Obviously they would all have to be turned on. You say this seems to be tied to the center channel crossover. Does sound above this crossover come out of the center? Are there any differences between setting the sub to mono or lfe? Lastly, you are backing out far enough in the menu for settings changes to work, correct? You'd have to at some point, but I wanted to check. Somewhere in the presets section requires you to back out one level before it takes the value. Regardless, I can't imagine why you would want anything but mono with the way you have everything. Unless, you are planning to run enhanced bass which I normally think causes more issues with alignment. But, that's just my opinion. I'll try to find some time today to test this. It will be later though as my morning is booked. This is also assuming I can get the ASIO drivers to work. Problem solved! I did a factory reset and ran some test and the issue still existed. I then reflashed firmware 1.9 cause why not right? And boom everything is now working as it should. Here is an example of the graph I posted yesterday that was clearly applying a crossover. I was able to alter the graph by changing the center crossover setting up and down which should not be the case as I was describing. Now with the new install of 1.9 here are the new graphs with different crossover setting and switching between mono and LFE they are all the same! As they should be. Hopefully seeing this graph will help those who were following understand what I’ve been trying to say all along. Just for clarity same all measurements were taken from the same location. Right at the mouth of the horn. This was not to apply filters for minidsp only to verify design work. One screenshot has a vertical resolution ranging from about 95 to 120 while the other goes from 60 to 111. Would it be possible to set the vertical scale the same for both images? |
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Post by kahodges1721 on May 4, 2020 10:28:30 GMT -5
Problem solved! I did a factory reset and ran some test and the issue still existed. I then reflashed firmware 1.9 cause why not right? And boom everything is now working as it should. Here is an example of the graph I posted yesterday that was clearly applying a crossover. I was able to alter the graph by changing the center crossover setting up and down which should not be the case as I was describing. Now with the new install of 1.9 here are the new graphs with different crossover setting and switching between mono and LFE they are all the same! As they should be. Hopefully seeing this graph will help those who were following understand what I’ve been trying to say all along. Just for clarity same all measurements were taken from the same location. Right at the mouth of the horn. This was not to apply filters for minidsp only to verify design work. One screenshot has a vertical resolution ranging from about 95 to 120 while the other goes from 60 to 111. Would it be possible to set the vertical scale the same for both images? Yeah I wish I had that saved and I would try to overlay them to really highlight it. Basically here is the graph with the same scaling on it. What you will see is that everything remains the same until after the 80hz crossover where the first one began to die quickly while this one allows me to see the ringing of the horn. Attachments:
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ttocs
Global Moderator 
I always have a wonderful time, wherever I am, whomever I'm with. (Elwood P Dowd)
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Post by ttocs on May 4, 2020 12:11:47 GMT -5
I just bought a miniDSP 2x4HD but haven't used it yet, so I don't have any experience with it. I've been following your journey in hopes of learning about what to expect. I can try something simple to begin with to see if I can help, but I would need to know what to do. I have a MacBook Pro so if a Windows computer is needed then that's gonna be a little tough. I've got some old ones running XP I can maybe use, but it's a bit sketchy. I've been using a balanced 2x4 coming out of the center sub for months on the RMC. No issues at all. I was referring to the Windows XP operating system as being sketchy, since it's so old. |
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Post by megash0n on May 4, 2020 12:18:19 GMT -5
I've been using a balanced 2x4 coming out of the center sub for months on the RMC. No issues at all. I was referring to the Windows XP operating system as being sketchy, since it's so old. Holy hell. For some reason, I thought you were talking about the LFE issue too. I completely missed what you were talking about. 😂😂😂 My bad. |
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Post by bluescale on May 4, 2020 14:54:16 GMT -5
With all due respect, I keep saying this and you keep not hearing it. You aren't sending and lfe encoded signal. You are sending (routing) a PCM encoded signal to the center sub in this test. Think about this for a minute. If I am correct, doesn't it precisely explain what you are seeing? Perhaps I'm misunderstanding, but I don't think you're correct. He showed his REW configuration, and it's set to send a full frequency sweep over channel 4, which is the sub channel. It's been a bit since I ran any sweeps, but I'm almost positive this is how I did it with the XMC-1. |
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Post by megash0n on May 4, 2020 16:03:22 GMT -5
With all due respect, I keep saying this and you keep not hearing it. You aren't sending and lfe encoded signal. You are sending (routing) a PCM encoded signal to the center sub in this test. Think about this for a minute. If I am correct, doesn't it precisely explain what you are seeing? Perhaps I'm misunderstanding, but I don't think you're correct. He showed his REW configuration, and it's set to send a full frequency sweep over channel 4, which is the sub channel. It's been a bit since I ran any sweeps, but I'm almost positive this is how I did it with the XMC-1. There is a possibility I am incorrect about my assertion. I've been thinking about this a lot, and hit up a few pages on the internet about LFE tracks and such. What I was trying to convey, incorrect or not, is that rew is just "routing" A PCM encoded sweep to the speaker channel designated as the LFE channel. Not that it was necessarily "encoded to be the .1 track". If that makes sense. So, how does the processor know the difference between it being the left channel or the sub? The routing happens inside REW, or the OS, and then sent to the processor as a PCM stream. This is how I was thinking thru it. I was trying to think thru what could possibly be making this happen. Sometimes my engineering brain goes too deep and it gets me in trouble. 😂😂😂 |
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Lsc
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Post by Lsc on May 4, 2020 16:16:51 GMT -5
Not to chime in and forgive me if what I’m saying isn’t relevant to your discussion but when REW sends an LFE signal it goes to my subwoofer. But since there is only one LFE channel in REW, I have to only have one subwoofer selected in my XMC2 (I think mono) and I use the left sub output. Not sure if the last point matters but the processor knows.
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