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Post by alexreusch on Apr 5, 2020 1:45:44 GMT -5
As far as I understand, the RMC-1 needs to be connected to a Ethernet network in order to configure DIRAC. Correct?
BUT: Other than that, does the RMC-1 need to be connected to an Ethernet network? In other words, after the DIRAC configuration is done, can I disconnect the RMC-1 from the network (or even disable the network interface chip)? Are there some other functions that don't work without network connectivity?
Background information:
Ethernet chipsets and its copper wired connections are a possible entry door for introducing electrical noise to your system. That's why I try to eliminate or at least isolate Ethernet from my audio system. Therfore, I have implementd a galvanic isolated network connection (over fibre) based on a optimised audio transporting device (Sonore opticalModule and opticalRendu). By doing so, I have eliminated all possible sources of electrical noise to my audio system. Now I don't want to introduce a new one, by connecting the AV processor to the network with a copper connection.
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Post by aswiss on Apr 5, 2020 2:36:18 GMT -5
As far as I understand, the RMC-1 needs to be connected to a Ethernet network in order to configure DIRAC. Correct? BUT: Other than that, does the RMC-1 need to be connected to an Ethernet network? In other words, after the DIRAC configuration is done, can I disconnect the RMC-1 from the network (or even disable the network interface chip)? Are there some other functions that don't work without network connectivity? Background information:Ethernet chipsets and its copper wired connections are a possible entry door for introducing electrical noise to your system. That's why I try to eliminate or at least isolate Ethernet from my audio system. Therfore, I have implementd a galvanic isolated network connection (over fibre) based on a optimised audio transporting device (Sonore opticalModule and opticalRendu). By doing so, I have eliminated all possible sources of electrical noise to my audio system. Now I don't want to introduce a new one, by connecting the AV processor to the network with a copper connection. the Network Interface is providing 2 things: - Be able to use the Remote APP on a handy/tablet
- Once Dirac is available - the RMC-1 needs to be attached to the network, during the measurements
Not more, not less - according your concerns about electronical noise - you might consider to use a audiophile switch, like the Bonn N8 from Silent Angel, AQVOX AQ-SWITCH-8, EtherRegen etc.
But as there is no Streaming Interface in the RMC-1, don't see how electronical noise should have a hearable impact. I use a Bonn N8 for all streaming devices including the RMC-1. On my Cocktail Audio X45, the difference between N8 and a standard switch is hearable.
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Post by alexreusch on Apr 5, 2020 4:10:06 GMT -5
Not more, not less - according your concerns about electronical noise - you might consider to use a audiophile switch, like the Bonn N8 from Silent Angel, AQVOX AQ-SWITCH-8, EtherRegen etc.
But as there is no Streaming Interface in the RMC-1, don't see how electronical noise should have a hearable impact. I use a Bonn N8 for all streaming devices including the RMC-1. On my Cocktail Audio X45, the difference between N8 and a standard switch is hearable.
Thanks for the information. Is it possible to disable the Ethernet chipset inside the RMC-1? I don't need an audiophile switch, that's all solved by the opticalRendu. Everything in the chain before the audio transport device (in my case the opticalRendu) is not relevant. It's simply 0 and 1's. |
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Post by millst on Apr 5, 2020 12:38:34 GMT -5
Everything coming in on your ethernet port is simply 0s and 1s  |
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Post by alexreusch on Apr 5, 2020 13:24:10 GMT -5
Everything coming in on your ethernet port is simply 0s and 1s Correct. However, Ethernet over a copper connection can transport electrical noise. And this noise can be transported to the point where the digital to analog conversation happens (your DAC). So noisy neighbors could potentially affect the audio quality of your DAC. If your DAC is also a streamer with a built-in Ethernet chipset, you could also have a potential noisy neighbor inside the chassis of a very critical device in your audio chain (depending on the Ethernet chipset and how it is implemented). Therefore, it is important to stop any potential noise (could also be a bad engineered power supply) before it arrives at the DAC. I do this, by implementing galvanic isolation before the data arrives at the point where the signal is processed from Ethernet to USB. Everything before that point does not really matter for me, as long as the connected devices are able to deliver the requested data. However, as the RMC-1 does have a built-in Ethernet chip, it could also introduce electrical noise, independent if it is in the direct path of processing audio data. The potential noisy neighbor is in the same system (and maybe also the mainboard) and electrical noise could potentially have an impact on the audio quality of the whole system. |
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klinemj
Emo VIPs 
Honorary Emofest Scribe
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Post by klinemj on Apr 5, 2020 13:45:03 GMT -5
Not more, not less - according your concerns about electronical noise - you might consider to use a audiophile switch, like the Bonn N8 from Silent Angel, AQVOX AQ-SWITCH-8, EtherRegen etc.
But as there is no Streaming Interface in the RMC-1, don't see how electronical noise should have a hearable impact. I use a Bonn N8 for all streaming devices including the RMC-1. On my Cocktail Audio X45, the difference between N8 and a standard switch is hearable.
Thanks for the information. Is it possible to disable the Ethernet chipset inside the RMC-1? I don't need an audiophile switch, that's all solved by the opticalRendu. Everything in the chain before the audio transport device (in my case the opticalRendu) is not relevant. It's simply 0 and 1's. I don't think you need to disable the RMC-1's ethernet chipset to meet your goal. If you only connect the RMC-1 when running Dirac setup and don't need/want the control APP, when you have done Dirac setup, disconnect the ethernet line to the RMC. Once you do that, the ethernet board in the RMC isn't doing anything so it should not make any noise. Also, enjoy the opticalRendu. I love my UltraRendu. Mark |
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Post by alexreusch on Apr 6, 2020 2:03:57 GMT -5
I don't think you need to disable the RMC-1's ethernet chipset to meet your goal. If you only connect the RMC-1 when running Dirac setup and don't need/want the control APP, when you have done Dirac setup, disconnect the ethernet line to the RMC. Once you do that, the ethernet board in the RMC isn't doing anything so it should not make any noise. Also, enjoy the opticalRendu. I love my UltraRendu. Mark Yes I hope that will be fine. However, even a unused port will have some activity going on. I had the MicroRendu for years and now switched to the opticalRendu. I think the guys at Sonore really understand the noisy neighbor problem of Ethernet. |
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Post by markc on Apr 6, 2020 11:39:11 GMT -5
Ethernet electrical interference is a constant problem for me.
I have an ethernet chip (and socket) on my PC motherboard.
I find that many hard disk to memory and CPU to memory transfers end up corrupted due to the signal interference from the ethernet (and the 240V 50Hz power supply)
It has got so bad that when I zip and unzip a file, or decompress a FLAC there is barely any resemblance to the original file.
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Post by millst on Apr 6, 2020 11:54:45 GMT -5
There's a whole mini computer in there running the show and you're worried about a disconnected Ethernet port? I think you either trust Emotiva to isolate the grounds, use proper shielding, etc. or you should find someone else you do trust.
If you guys already have $100k systems with purpose-built/room-treated listening areas, carry on and disregard.
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Post by aswiss on Apr 14, 2020 9:45:11 GMT -5
I don't think you need to disable the RMC-1's ethernet chipset to meet your goal. If you only connect the RMC-1 when running Dirac setup and don't need/want the control APP, when you have done Dirac setup, disconnect the ethernet line to the RMC. Once you do that, the ethernet board in the RMC isn't doing anything so it should not make any noise. Also, enjoy the opticalRendu. I love my UltraRendu. Mark Yes I hope that will be fine. However, even a unused port will have some activity going on. I had the MicroRendu for years and now switched to the opticalRendu. I think the guys at Sonore really understand the noisy neighbor problem of Ethernet. They find for sure a group of users who want these kind of things. There is no streaming in the RMC-1 - so nothing which might affect the sound at all.
If you really care about such details, use an external DAC together with Sonore, and use then Analog XLR Input on the RMC-1. This is the way to go.
If the transport is copper or glas does not matter so much.
At the end, each one of can do whatever one believs to hear or not. Thats part of the hobby.
Before starting with details like noise in the LAN - have your power consumption optimized, done the room acoustics (which does a bigger part) and so on.
And just to mention: It's only some % of the hearable chain.
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Post by alexreusch on Apr 14, 2020 15:52:54 GMT -5
Yes I hope that will be fine. However, even a unused port will have some activity going on. I had the MicroRendu for years and now switched to the opticalRendu. I think the guys at Sonore really understand the noisy neighbor problem of Ethernet. They find for sure a group of users who want these kind of things. There is no streaming in the RMC-1 - so nothing which might affect the sound at all.
If you really care about such details, use an external DAC together with Sonore, and use then Analog XLR Input on the RMC-1. This is the way to go.
If the transport is copper or glas does not matter so much.
At the end, each one of can do whatever one believs to hear or not. Thats part of the hobby.
Before starting with details like noise in the LAN - have your power consumption optimized, done the room acoustics (which does a bigger part) and so on.
And just to mention: It's only some % of the hearable chain.
Yep, thanks! All planned and done this way. The Sonore opticalRendu is attached to an external DAC and I will use the analog XLR Input of the RMC-1 in Stereo Reference Mode. All devices are using proper power supplies (for example: Sbooster for opticalRendu) or are attached to a power conditioner (IsoTek Aquarius Evo 3). Cabling is already OK (Inakustik Reference for speaker and XLR connections) as well as feeding the DAC with a proper USB cable (Curious Evolve). And room threatening has been done as well... As you can see, I am scrubbing on the last percent |
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KeithL
Administrator 
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Post by KeithL on Apr 14, 2020 22:38:45 GMT -5
First of all, no, the RMC-1 does not need to remain connected to a network, other than when you're running a Dirac calibration, or using a network-based remote control app.
(And, no, there won't be any Ethernet traffic whatsoever if you disconnect the wire... but some of the Ethernet port circuitry does in fact continue to run.)
However... any effect this has on overall system noise is truly negligible. You also cannot disable the circuitry that enables the remote control to work... And, even though the part of the Volume control that touches the audio signal is purely analog, there is a processor that controls it... and which it won't operate without.
There is some gear out there that offers an option of disabling the digital circuitry, including things like the display, when it's not being used. There are two reasons why they might do this: 1) Because, in their particular design, noise from the digital circuitry leaks through into the analog circuitry when it is operating, so the noise floor is lower with it off. (This is something that can be avoided with good design.) 2) Because it sounds really good in a marketing brochure. (In some cases, they don't actually disable the digital circuitry, but merely the display... and, in many, there is no practical difference.)
This is all entirely different than a true analog mode, like our Reference Stereo mode, where the whole point is to avoid converting analog inputs to digital and back again.
(Worrying about stuff like this is equivalent to hoping that you can improve the mileage of your car by disconnecting the GPS when you're not using it.)
I don't think you need to disable the RMC-1's ethernet chipset to meet your goal. If you only connect the RMC-1 when running Dirac setup and don't need/want the control APP, when you have done Dirac setup, disconnect the ethernet line to the RMC. Once you do that, the ethernet board in the RMC isn't doing anything so it should not make any noise. Also, enjoy the opticalRendu. I love my UltraRendu. Mark Yes I hope that will be fine. However, even a unused port will have some activity going on. I had the MicroRendu for years and now switched to the opticalRendu. I think the guys at Sonore really understand the noisy neighbor problem of Ethernet. |
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Post by vcautokid on Apr 15, 2020 5:58:52 GMT -5
I like that last part of the GPS. Very nice.  This is not a worry especially once disconnected from a network that is a nothing thing. I am a big fan of optical interfaces well beyond spdif and think HDMI for instance is absolutely stupid. F'ing Hollywood finds the worst way to protect their content along with HDCP. Which is why I stopped worrying about home theater and moved on to creation of my own stuff. Ethernet way and above is our friend and HDMI for years has screwed the audio/video public for years. It is a creation of a connection that didn't need to be. USB another stupid topology too with that slip it connection in the Hope's it's good. Stop pissing about Ethernet and start going after the true scourges of AV. Ethernet will do you way more good than not, and if you don't need or want it leave it disconnected unlike USB and HDMI which is less so take or leave it. Me? Networked fiber and stop screwing with Copper, it is the 21st century after and stop the argument here about costs. That is easily fixed. |
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