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motberg

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Everything posted by motberg

  1. Maybe this storage performance problem is related to the software involved. In my recent experience: StarTech 2-Port USB3.1 (10Gbps) Card with 2x USB-A PCIe Interface Powered by extra back-panel rail of HDPlex 400W ATX PS using iFi DCiPurifier to Intona Industrial Isolator to StarTech.com USB 3.1 (10Gbps) Enclosure for 3.5” SATA Drives -Supports SATA III with WD Red WD40EFRX 4TB SATA 6Gbps Buffer 64MB IntelliPower HDD for NAS Powered by TeraDak 3A 12V PS using w/wo iFi DCiPurifier Using HQPlayer and also JPlay on .wav files only - using a Samsung 1 TB SSD with separate LPS was preferable. The sound quality from the external box solution seemed veiled and strained by comparison. This was tested on a single PC, Asus B150M-Plus, NOFAN, i7-7700T, 8GB, INTEL SSD X25-E 64GB for OS, HDPlex ATX 400 LPS w/separate LPS's for the SSD's, JCAT USB card powered by Uptone LPS-1 with LT3045 1.5A box, Winserver2012 core w/AO Dedicated listening room using speakers with a measured in-room rise approx. 6db after 10kHz
  2. My personal experience has been SSD's (up to 1TB) with separate and individual LPS's is better than a 4GB HDD in external USB 3.0 enclosure powered by 3A LPS and with Intona Industrial USB Isolator inline between the PC and and enclosure. (StarTech.com USB 3.1 (10Gbps) Enclosure for 3.5” SATA Drives with WD Red WD40EFRX 4TB SATA 6Gbps Buffer 64MB IntelliPower HDD) This is all possibly software dependent... I am not 100% sure, but when I tested HQPlayer seemed to not cache upsampled files into memory.. the enclosure read-LED was doing a disco light show while playing using HQPlayer.. When I tested the external enclosure with JPlay this LED activity was greatly reduced and sometimes eliminated dependent on the software settings. Even then, in my system I still think an SSD with separate and individual LPS's is preferable.
  3. ...looking forward to your impressions for sound quality - 2016 vs. 2019 if possible...
  4. motberg

    HQ Player

    Hi, Sorry if this has been asked before, but how do I know which filters will not revert to an "Auto rate family" type scenario and upsample at an even multiple? I need upsample PCM (various) to fixed PCM 384 KHz only.. Also, if there are any suggestions for a filter that would do this with good detail, that would be much appreciated. computer is i7-7700T w/ 8GB Many thanks in advance...
  5. This is interesting, thanks... but how do you use this for simple album playback?
  6. Dan, Thanks... this is a very interesting point of reference.. Quick question..... What is the OS on the NUC Server?
  7. I have had successful correspondence with all 3 addresses, but the 888 seems to be Michael, so best to put his name in the subject line... sometimes his account seems to drop emails. maybe add a link to this thread as a little extra incentive.. I have one of their 210W ATX supplies running 24/7 since September 2014 without problems.. sounds fantastic. I hope your problem gets sorted out quickly.
  8. Yes I was, very sorry and I have edited my post. I think it would be good if you would please do likewise to remove the false relation Thanks
  9. I do not understand your comment above.... http://archimago.blogspot.com/ I would think this generates revenues?
  10. until then I will not patronize the advertisers unless I know them from another source
  11. FWIW.. I have a TriField meter.. from memory, worst offenders in my room are the LPS´s, I wrap these with a few layers of Mumetal if they are close to anything I think may be sensitive. However iirc 18 CM distance = 2 layers of 1.5mm Mumetal. Also 1 large sheet Mumetal =$25 USD .. so.... I have a strange situation on the analog side... I think it is related to tube gear only.. if I have a tube preamp connected with non-shielded XLR or RCA cables, I get an intermittent audible whistle at 7.5kz (similar sound to what I think I hear sometimes from a computer monitor). If I use balanced shielded cables, then this whistle seems to be reduced to near inaudibility or eliminated. I am not sure if it is the tube preamps, but seems to not happen with SS preamps... I have tried trouble shooting the exact source with no success. I think I had the same problem with 4 different tube preamps, though again, not sure if that is the source due to the intermittent nature of the whistle makes it difficult to positively identify (not only that, is that I think during troubleshooting I start to hear the whistle and I am not sure if it is really present.. the frequency seems similar to what is described as tinnitus..). I was thinking it should be pretty easy to test RFI effects by introducing the offensive stuff into the system and record silence into a DAW equipped battery laptop, but haven't yet sketched out the test procedures or checked the noise floor of a typical laptop mic input (could always use a home studio USB ADC I guess). That way, no need rely on hearing sensitivity, transducer accuracy or eliminating masking during music playback.
  12. same here in Hangzhou.. from the train station no less.... (had to use the VPN set to London though.. ) Eagles showed some major character today... congrats!
  13. Oh well... that is great if you have the RCA connections at both sides, I have some of the AQ King Cobra RCA cables, and just from memory, they will be fine and I would not consider to change them in this application. Seems you are good to go.. and looking forward to your observations. Aloha!
  14. Hi, maybe one of the engineers here can comment, but I think generally the idea is that using a RCA to XLR cable is a better idea than a RCA to XLR adapter if you need to do this conversion. Single Ended (or unbalanced) is usually fine as long as you do not require long cable lengths. I recently tried a RCA single ended tube buffer between my SS preamp (XLR balanced outputs) and my SS amp (XLR balanced inputs) and was surprised that the conversion (using the Ghent cables) did not seem to have any negative effect on the sound quality. If you have RCA inputs and outputs, then that would probably be the best way to connect things, but I think in that case the conventional wisdom is to keep the cables as short as possible. I do not know if you saw this video, but in the beginning the guy is holding one of these, so you can get an idea of the size and connections layout.
  15. well... we can still tweak the analog stuff also thanks for the comments!
  16. to me "minimum susceptibility" is not the equivalent of "immune" but if that is how you read it then OK.....
  17. third sentence The fact is that both screens and shields and the copper balanced twisted-pairs in a UTP cable will behave as an antenna to some degree.
  18. Do you think this is true for serving via USB, or only via Ethernet ? I think most the hardware and software optimizer stuff I have encountered is more relating to USB.. I am only starting on Ethernet with the standard SMS200, but there are options for advanced clocking available, as well as power supplies. Software changes when using a USB path is obvious in my system, and I have seen posts relating to Rednet use that imply software tweaking at the source is audible, although seems to me not as profound as the USB path.
  19. OK.. I took a look at the Siemons article.. so what you are promoting is that although there is some antenna effect, it is not audible ?
  20. I am not sure, but the sound field modification section seems to be some type of crosstalk cancellation similar to Carver Sonic Holography, done with a much better attention to sound quality using current technology. I had a Fosgate surround processor many years ago, and that piece was much more transparent and adjustable than the other processors I tried at the time. I have an upgraded/refurbished Carver C-16 which I recently tried and also the C9 processor, but the Holography circuit results in some serious confusion in the lower mids.. so if you get one and test, I suggest to check that area carefully before the trial return period expires (if there is one). I recently spent about half a year with a set of physical partial crosstalk cancellation barriers between my speakers, and just recently removed them.. so far I think I lost at least 40% of my sound stage depth and 20% width by removing the barriers. Some info here: http://www.ambiophonics.org/ Thanks for the ´gon link.. so far this seems a possible useful device, especially in a small room. You can get from Ghent Audio RCA-XRL cables, I have tried these and work well.. also they are pretty light wires, so it would be easy to use vibration control. I think you will lose some gain in the conversion though..
  21. so there are no possible effects to having a 25+ foot cable hanging from your system picking up RFI or EMI ? (I do not think the solution of disconnecting the cable during playback would work well in my next setup planned with a SMS200...)
  22. inability to unlearn an auditory illusion
  23. This looks great... small form allows easy connection with short/stiff HDMI i2s cables.. external power lets you flavor the power to your preference and budget.. Hope you can add Audio-GD to the tested HDMI-compatible list...
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