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One and a half

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About One and a half

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  1. HQPlayer will only connect to its own NAA adapter on another computer over Ethernet or by a USB direct connection. I have tried NAA on a Mac mini years ago and found the additional step of another computer adds more noise and the endpoint is still a USB local to that NAA machine. HQPlayer can be an engine, such as a Roon front end, but the output is then local USB or NAA.
  2. @WilliamWykeham, I ran into trouble due to something I did without referencing the connections to a photo... anyway, this is how I resolved the Bridge not connecting for Win2016 and Windows LTSC. 1. Delete the existing Bridge connection, reboot 2. Connect say the lower port or the left port only to the network (router/switch), leave the other connection to the Lumin disconnected for now, but keep the Lumin powered on. It will say Network Error, no problem. 3. Using IPconfig /all, find the MAC address of the port where the network cable is connected to. 4. In your router settings, assign a permanent IP to that network MAC address, eg 5. Back to the Network adapter page, Bridge the 2 JCAT ports together, don't assign any IP/DNS/GW and leave it DHCP 6. Shutdown the server 7. Connect the Lumin U1 (it must be powered on) to the the right or top RJ45 8. Reboot the Server 9. Once settled, the router assigns the IP address ( to the network port and a DHCP address to the Lumin. 10. On the Lumin app, check the IP address, it will not show on Ipconfig (dunno why). 11. On the server, IPCONFIG /all again and check the IP address is assigned to the MAC address. If you end up with a 169..... type number, reboot and all should be good. 12. Trim the Config for the network adapters on the JCAT for 1GBs, I have all the offloads disabled seems to speed things up If either the server shuts down or the Lumin switches off or vice versa, the Lumin will always connect within 10s or less once the server is operational. The U1 is awesome, it needs a good clean Ethernet front end and configuring the JCAT will reap even more benefits. For now I have a Baaske filter on the network side, seems to keep most of the noise out. Also have a look at the bonding of the hard drives, chassis and mobo, this reduces more noise ending up with a really great image, height and if the recording is good enough, spatial positioning.
  3. I have licenses for JRMC, HQPlayer, Audirvana+, Fidelizer Pro and Roon. Also ancient Amarra when it worked. None are what I would describe as a go to player. JRMC has a large learning curve, for the moment, I use JRMC to find music and to audit the library for corrupt files like images and metadata that goes astray. It's search engine is vastly superior to Roon, so difficult searches I find in JRMC and play in Roon. HQPlayer is a fiddler's dream. It's upsampling capabilities are technically possible but sound artificial, same with Roon. Hardware upscaling in DACs eg upscale anything to DSD are very good, e.g. Playback Designs. HQplayer has so many filters, some work with some music and are disaster with others, I could not be bothered with setting filters for different music. It cannot send data over the network directly to a Lumin, so it's no use to me any more. Roon playback is very stable, but the much touted metadata handling is best amateurish, contained within a huge database that is data hungry, often misses vital info. For example find all music by John Lennon and Paul McCartney. Sadly, a lot of metadata has Lennon-McCartney, Lennon&McCartney, Lennon & McCartney, and various combos of same, so Roon will not list all compositions, but gives you the work to rationalise these compositions.... Artists browser is 75% grey tiles, and the other 25% are modern photographs from artists, which over time, I don't recognise. Anyway these are specifics and there are quite a lot of other dramas, but are annoying and detract what you paid for as incomplete. I like Audirvana for the best SQ, but its operations with the Lumin U1 and DAC have quirks, which could be ironed out in in time. I think better SQ gains are with hardware, software just creates annoyance and usability issues which cloud the SQ enjoyment. Sometimes file management is best left to tools like Windows (File) Explorer or Finder (which can't).
  4. I think Mr. Waldrep should follow his own advice, including 95% of audio recording/mix/mastering engineers, in that "it is the production path that establishes the fidelity of the final master. " I could never engage with AIX recordings, kind of muddled little depth or wide soundstage. In contrast, recordings from an analogue source, eg TBM ca 1970 onward recordings still outshine modern engineer's abilities to faithfully record music. There is a difference between art of the recording and the art that is played by musicians.
  5. Electroboom measured the efficiency of wireless charging compared to a cable and found the wireless charger consumed 38% more power. It's not really that of a problem on its own, but collectively of millions of chargers like this, the waste should be better contained. Anyway I thought Apple abandoned the idea of the wireless charger, due to their inability to produce a creation without any connectors.
  6. DC offset, no, not that sinister. When an inductor like a motor loses voltage, there's a transient voltage created which can be 2-5 times the line voltage, not so? That transient energy is destructive at the source affecting motor windings and switchgear that turns off the motor like a thermostat. Increased voltages breakdown the insulation of the thermostat until it fails. Coax is single ended 0.5V pp compared to ground, a transient can easily swamp that figure and overload the receiver. When @Ropet went to AES, the transient may have been only induced into one conductor, being differential, the spike would have been ignored by the receiver. For USB, it's also differential, however the distances on the USB pins to the shield which is grounded are closer than the AES3 pins by a factor of some 3 times+. I agree that the grounding should be looked at in some detail as well as the wine cooler and fan switch. Causes-and-Effects-of-Transient-Voltages.pdf
  7. I don't understand active speakers exist. As audiophiles, vibration is kept to a minimum for anything, turntables, preamps, amps, speakers, yet this is a complete 180 degrees to an active speaker, let alone the Class D and the SMPS to further sink the boot in. Why not add bluetooth/Wi-Fi to create the Trifecta. The LS-50 is picky about amps, choosing one that suits technically is not simple.
  8. I have tried the Yaqin SD-CD3 tube buffer with the original Chinese tubes, and with Matched Pair Psvane UK-6SN7 HIFI series Vacuum Tubes in the pre-amp tape loop. The tubes were worth more than the buffer itself. There was just too much audible distortion and none of the pleasing tube warmth that is supposed to be there. The PSVANE certainly are cleaner, but the distortion is very noticeable. Same with ifi iTube which fared worse, attributable to the built in SMPS to create the B+ as well as the iPower SMPS that feeds the iTube. The buffer is now used ifrom the pre-amp's tape out circuit to a Grace Design m903, re-purposed as an XLR out that's hard wired to several Ruark Line in inputs on radios around the house. Could be the distortion is not so noticeable and is masked by the speaker's inability to be a hi fi speaker
  9. The switching noise of the fan and wine cooler are generated HF noise radiated as well as conducted noise through the power cables. In the case of the fan, the wall switch can be replaced, the cooler would need a new thermostat and or cap change on the motor. Both are inexpensive repairs and that crud is still there left untreated.
  10. A tube pre-amp won't help here. When music does get busy, it's much the same as a trio jazz playing softly, each instrument should be in the right place at the right time, drums should sound like drums and not paper bags. It's possible that what @al2813 hears is being masked by imperfections. From the equipment list, here's some suggestions, if solutions have already being tried, then please ignore. Not a fan of amps utilising SMPS, the Hypex is a class D. I do have the KEF L50 speaker and partnering this amp with a Yamaha AVR RX-A3080 is a disaster. Total mud. Switched to a classic AB amp with bipolar outputs, lots of damping factor and good current ability, Accuphase E-450, OK bit OTTP, but illustrates the example. Far better, the speaker's resolution was a lot better. See also this thread at AS on selecting a suitable amp for the LS50. I don't have any experience with Pi setups, of those at AS have changed to something better, well the experience is positive. Cost plays a major difference unfortunately. A Gishelli labs pro DAC is inexpensive and works very well, but it needs a linear power supply at a higher cost than the DAC itself, is limited to 192 input PCM, needs a USB to coax/TOS converter not sure if the OP has DSD playback to consider. For an all in one DAC, Denafrips, Schiit have a wide range of well reviewed DACs, still a heap to choose from. Playing from a PC also has limits, with USB outputs need re-clocking, more cost. Rather than add bits here and there, save a little more and venture to an Ethernet solution direct with a Lumin streamer T2, D2 with built in streaming functions and DAC of very good quality. The Lumin has very good interfaces that can team up with just about anything and can be fitted anywhere. Models don't change much, and I don't see them listed for sale much online either. Users usually sell their Lumin, to buy a higher up model instead Room : Stands for the KEF, distance apart, furnishings, window locations, reflections a whole science there. There's a thread on Reddit that deals with LS50 stands even for desktop use, worth a read on behaviour and removing that confused sound. The LS-50 are very capable speakers, would keep them for sure and work backwards. Good luck
  11. Roon remote installs on iOS or Android devices, so search for roon remote on app store or play store. To install Roon on another computer as a control point, run the Roon installer and select the bridge option and not core function.
  12. There's some good techniques used to reduce EMI, the chokes can be metal enclosed and the switching IC may not need a heatsink. Still prefer to drive B+ from the mains direct, 600V electros are common now.
  13. Looked up the tube spec for the 12AU7 and note the B+ max voltage was 250V. With the devices having a 12V DC input, there are three methods to achieve a higher voltage. ifi uses an DC DC switcher. Can use the diode cap triangle method Vibrator. Interesting concept which these pres use...
  14. Here's a link about the Lion Breweries ransomware attack. It took a week or so for the plants to be online again and I suppose the IT manager looking for another job. He could have said 'told you so' and was denied money to upgrade security. Would have been cheaper to upgrade, than face the week of lost production. Production managers aren't the kindest of people on the planet.
  15. Well that's the premise and where the controls are effective. Examination of my ex local Asus router shows the protection was a client of McAfee that did sniff out some dubious websites, but would that be clever enough to detect a stream of audio packet data that has an underlying code in it? If that's the case, the streamer may not need protection and be as dumb as it comes. The more you make protections, the bigger the risk of letting in undesirables, since you can't think of 'everything', seems to be the way of IT, huh, there's something in the future that can cause 'vulnerabilities', another word for for IT parlance which means, oh, yeah, forgot/didn't realise about that one.
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