Jump to content

octaviars

  • Content Count

    323
  • Joined

  • Last visited

About octaviars

  • Rank
    Newbie

Personal Information

  • Location
    Sweden

Recent Profile Visitors

1930 profile views
  1. octaviars

    Sonore opticalRendu

    I suppose that shows how you can convert your existinng system with for say a microRendu to have a opticalRendu instead with fiber connection. Then you would take the LAN cable that goes to your renderer and plug that in to a FMC (fibermediaconverter as a Sonore opticalmodule for example) plug and SFP (small form-factor pluggable) module into it ,run your fibercable to a second FMC (with the same sort of SFP module) and from that FMC you run a ethernet cable to your renderer. But to me this is lots of stuff that can be implemented in a switch with SFP port and run the cable directly to a opticalRendu. If you already have a fiber cable to your equipment comming from a switch with fiberoutput for example you can use that directly to an opticalrendu or a use a opticalmodule to get ordinary ethernet to a renderer. I do get that all people dont know how to build a optical network and knows what an FMC or a SFP is but it aint that hard to find information on the internet what FMC or SFP means or wait untill the products a on the market to get the correct information from Sonore how to connect it. Dont get me wrong here but it is hard to explain to all so everyone understands and it is all dependable on how "your" system is built how you can connect it in the best way with these new fiber products. https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver https://en.wikipedia.org/wiki/Fiber_media_converter
  2. octaviars

    Sonore opticalRendu

    Perhaps a look at this will sort some things out. The optical module is a FMC and you will need two SFP modules in each end of a fibercables to connect it to a opticalRendu. I am shore when everything is ready @vortecjr will sell kits with all you need to get it together. As there are many different SFP modules to put in fmc, routers, switches it is not easy to say how one should connect everything as it depends on what hardware you choose so they work together.
  3. octaviars

    New HDPLEX 200W LPS

    This is what John wrote regarding DC/DC converters as there will be some of those in the new etherREGEN. "First off some clarifications about the differences between SMPS and DC/DC switching regulators. An SMPS plugs into the mains, it chops up the mains voltage into high frequency pulses, feeds that through a transformer, on the other side rectifies the high frequency pulses coming from the transformer, filters it into fairly clean DC, measures the DC and sends a feedback signal through another transformer or optical coupler to the front end to modify the pulse width so the DC output voltage is correct. These have low level high frequency noise on the output AND input, but also have both high impedance and low impedance leakage current from the AC line to the DC output. This is what causes a lot of the issues with SMPS, NOT the high frequency noise on the output. A DC/DC converter does NOT connect to the AC mains, its input is DC from some other power supply. Their purpose is to convert one DC voltage to another (either up or down). Their big advantage over a linear regulator is that the POWER is constant, not the current. With a linear regulator the current going in is the same as coming out. With a switching DC/DC converter the current going in depends on the power on the output. Say for example you have 10V coming in and you want 1 volt coming out. If your load takes 1 amp, a linear regulator will need 10V at one amp on the input, that means 9 watts of power are dissipated in the regulator (ie a BIG heat sink). With a DC/DC converter the power on the output is 1 watt (1V x 1A = 1W). So on the input it takes 1W / 10V = 0.1A. Now in reality the converters are not 100% efficient, maybe say 85%, so the power needed by the input will be a little higher, in this case 1.15W, so the input current is 0.15A. This means the DC/DC converter is dissipating 0.15W instead of 9W, 60 times lower! The DC/DC converter DOES have high frequency output noise, but it is usually at a much higher frequency than an SMPS. SMPS usually run at 40KHz to 70KH, DC/DC converters usually run at 500KHz to 1MHz. This is a big difference. At 60KHz a filter is fairly large and costs some money. The same amount of attenuation at 1MHz takes very small very inexpensive components. The result is that IF you use a filter on the output, you can get a huge attenuation for very small board spaceand cost when using a DC/DC converter. Of course you DO have to spring for the filter, very cost constrained devices usually don't. The DC/DC converter does NOT create any extra leakage since it is not connected to the mains. Whatever leakage exists from the power supply is still there, the DC/DC converter does not attenuate it, but it doesn't increase it either. With a DC/DC converter you can always add a linear regulator after the converter, good ones can decrease the high frequency noise from the converter by 80-100dB. So a combination of the filter AND a linear regulator reduces the high frequency output to much less than the inherent noise of the regulator, it is essentially gone. So if properly implemented a DC/DC converter does not have any down side and it drastically reduces the amount of heat that has to be dissipated.  All that said, very low cost devices are not going to go to any of those measures, they are going to use a cheap DC/DC converter and and feed the output directly to the chips. On the etherRegen, there ARE a few DC/DC converters in the design. But they have the good filters and very good linear regulators after the converter. I have tried using some very sensitive test equipment and have not seen ANY sign of the DC/DC converter on the final DC. One other issue with DC/DC converters is EMI, the converter can radiate high frequency signals that can be picked up by other traces on the board. I am using some very special converters that have extremely low EMI, I can JUST barely measure it, where I can measure strong emission from other converters. Even though the EMI is so low I am laying out the board so that pickup by other signals is quite small. Again I have not been able to see any hint of this in prototypes.  The whole reason for using the DC/DC converters is to drastically cut down on the amount of heat the box has to dissipate, AND the high cost of getting the heat from the regulators TO the heatsinks. I'm quite confidant that this is done in such a way that there will be NO impact of this on the operation of the device.  John S."
  4. octaviars

    New HDPLEX 200W LPS

    The big span of output voltages on the new HD Plex (3.3V/5V/7.5V/9V/12V/15V) from the LT3045 board would be impossible when the input to the board is 16V and needs a pre regulator as the voltage drop is so big. A switching DC/DC converter can do big voltage drops without producing much heat. If this is done right it should work and not make much difference from a true linear supply. Here is what John Swenson wrote about it.
  5. octaviars

    SOtM smS-200 unveiled at Munich Hi-End

    That is my post. Glad that it works. I use this and have never had any problem ☺
  6. octaviars

    Article: Audiophile 5: Sonore opticalRendu in 5 Minutes

    MSB uses optical cable with SFP modules in the DAC and their transports this is not for ethernet only connection between dac and transport they call it MSB PRO ISL. "Our proprietary connection, the Pro ISL interface prioritizes the most efficient aspects of any digital interface, using an infrared laser diode to transmit over a single-mode fiber cable. This enables features like clock sync and error correction, all while obtaining perfect isolation and ensuring the lowest possible jitter." MSB renderer modul uses ordinariy LAN connection. I have not seen any other DAC than Lumin X1 to have SFP port built in.
  7. octaviars

    Sonore opticalRendu

    You will need SFP module, fiber cable and other equipment (router, switch or fiberconverter) with fiber connection to supply it.
  8. octaviars

    SOtM smS-200 unveiled at Munich Hi-End

    First of all I use Roon so all my findings are based on that. I use a USB connected SD card reader in my desktop computer and uses imageUSB with Windows 10. 16Gb class 10 card. Despite that most people say needs to be done I clean and re-format my card to FAT3 before I burn the image to it (this is from May at SOtM recommend way of doing it). Only thing I had to do is change the buffer time in Roon settings in Eunhasu to get it working. Only problem I have seen is the constant blinking light on the front with 4.5 and the 4.51 that I got from upgrading in Eunhasu but that stopped with the newest download I burnt.
  9. octaviars

    Nagra HD DAC X

    Some writing about the new Nagra DAC. https://www.whathifi.com/news/nagra-hd-dac-x-aims-for-digital-perfection
  10. octaviars

    SOtM smS-200 unveiled at Munich Hi-End

    The first time I re-imaged with the downloadable 4.51 the constant blinkning went away and have stayed that way since.
  11. octaviars

    Nagra HD DAC X

    This is what Rene wrote about the HD DAC X comparing it to the HD DAC https://www.whatsbestforum.com/threads/nagra-hd-dac-with-classic-psu.26333/page-2 "The HD DAC X share the same New Digital board made in Switzerland by Nagra 72 Bit / 11.2 MHz. 8 coreDigital board, that also includ all the digital connections so it can be replace for future innovations. Both feature AES-EBU, S / P-DIF inputs are studied by Nagra, the new Nagra Link single-mode ST-1 optical inputs to receive in the near future, new sources of very high resolution Nagra.Both have the USB input, around a 8-core X-Mos chip.Ultra high precision and ultra low jitter clocks are used in this new Nagra DAC.A high power FPGA performs all calculations; all audio sources are in DSD256 format (11.2 MHz sample rate).The digital part alone uses 16 ultra low noise power supplies.Some digital power supplies have noise levels 30 times lower than the HD-DAC, itself already using very low noise circuits. The order of magnitude of the noise of these new power supplies is 0.4 to 0.8 uV RMS (from 10 Hz to 100 kHz).The 8-layer, high-précision PCB is also of very high précision.The analog part is very original. The principles used within the Nagra HD-DAC have been taken over and improved.Here some of the différence that the HDDAC X have :Higher voltage, the power supply is very sophisticated, using ultra-fast silicon carbide rectifier diodes, ultra low-noise voltage regulators, and a virtual battery system made up of many supercaps. (3 times more than the HD-Preamp).The new HD-DAC-X and its power supply use no less than 37 regulated power supplies. Also the Chassis is bigger so we can use larger capacitors.The 8-layer, high-précision PCB is also of very high précision.The analog part is very original. The principles used within the Nagra HD-DAC have been taken over and improved.The impedance of the signals is strongly lowered by a symmetrical current amplifier, of very high performances, without voltage gain, without feedback.The rise time is of the order of 1800 V / uS on the 28 H inductive load of the gain-up transformers.The voltage gain is only achieved by new high-end audio transformers, studied by Nagra engineers. The other role of these transformers is to unbalance the audio signal to attack a single-ended tube mount. These transformers are built exclusively in Nagra workshops, by the best specialists.The performance of these transformers is an important part of the audio quality of this new Nagra HD DAC X. Performance has been improved over transformers used in the old HD-DAC.An impedance reduction is performed by a stage consisting of two military tubes NOS JAN5963, cathodyne output. The tensions of the heating filaments of the tubes are individually regulated by tube, by very low noise systems.No feedback is used around this stage, as on the current amplifier preceding the audio transformers.Numerous special components, some of which are custom-built on Nagra's specifications, are used within this new DAC.Advanced mechanical isolation, the audio engineers created a super vibration free stand to lower the microphonic resonances to a new level. Rene Laflamme, Nagra audio"
  12. octaviars

    dCS Rossini 2.0

    They wrote this on Roon forum. "All of our products use the RingDAC architecture and Bartok is no exception. It uses the current architecture which is shared by Vivaldi, Vivaldi One, and Rossini. The RingDAC is designed to operate on a specific data format which is 5 bits with a sample rate of either 3 or 6MHz. It’s not DSD… it’s RingDAC format. It’s 5 bits because that’s how the math works out in relation to the actual physical hardware and desired noise characteristics" So technicaly the Bartok could do the same thing as a Rossini with the same software but as you wrote @AMP will know. To me it would be strange if Bartok were to get same functions as a Rossini 2.0 but perhaps in the future.
  13. octaviars

    dCS Rossini 2.0

    I think dCS wrote on Roon community that the Bartok will never get the exact same software driving the ring dac as a Rossini and that is perhaps not so strange. The software in Rossini is as I understand very similar to Vivaldi. I tried a Rossini a couple of weeks ago with the old software and need to get it on loan again to see how it sounds now.
  14. octaviars

    SOtM smS-200 unveiled at Munich Hi-End

    Still they would have to have a working software to do this. I have done several updates via Eunhasu webpage and imaging on SD card without problems but clearly SOtM have not done proper QC this time even if Roon works as it should right now with the latest download. I think it is safe to say that this will not be the end of SOtM needing to come out with new versions that fix these problems.
  15. octaviars

    SOtM smS-200 unveiled at Munich Hi-End

    After reading this I decided to wipe the SD card (16Gb class 10) clean and download the 4.51 image and burn it to the SD card. Took perhaps 15 minutes to download the 7.4Gb file and another 25 minutes to write and verify the card with USBimage program, I use a SD card reader that is connected via USB internally in my desktop computer. Started my Neo and the front light is lit up constantly after it has booted up not flickering all the time as before, started up Roon and still the light was constant, pressed play in Roon and the light started flickering as it used to do with 4.22 so my conclusion is that there is something different with the download version compared to the one I did the upgrade to in Eunahasu webpage earlier this week.
×