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d_elm

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About d_elm

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    Calgary, Alberta, Canada

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  1. I record DSD 128 and use Vinyl Studio to split tracks and convert to 192/24 or 96/24 for playback. Vinyl Studio is also good with pop/tick removal if needed.
  2. From the Ultimate Analog test LP following is a spectrum analysis of Side 1 Track 9, 60 Hz and 4k Hz with 4:1 voltage ratio of the two frequencies. The goal is for the cartridge/arm to playback what was recorded. Here we see 120 Hz, 4k +/- 60 Hz, 8k, 12k. Something going on at 20 Hz related to the length of the I-Beam (I installed a longer I-Beam and 20 Hz went up) on the ET-2 and the resonant frequencies of 9.5 Hz vertical and 4 Hz horizontal. Plot was generated by REW from a recording of the track. I could probably produce the same, or better (I will try it) plot using a PicoTech 4262 s
  3. I have the original low pressure manifold and SPP-6GA pump, 3psi I think. Pump is 1 metre below the TT and pump noise measures 30db at 1 metre. Higher pressure is probably better and it would be interesting to have spectrum plots of before and after installation. To get a plot I record a mono track with a Tascam DA-3000 (or equivalent) and then get a spectrum analysis with REW. I can post a plot if there is interest.
  4. The obvious difference in sound is with channel balance. With proper setup of the ET-2 there is no skating force. Hard to say that about a pivoted arm but for a magnetic cartridge skating force causes distortion that may not be noticeable. With the DS optical transducer skating force causes channel imbalance. The Pedersen mods replace the original acrylic with two larger pieces, increase the weight by filling with sand, and replace the three springs with three adjustable O-ring columns and lock the horizontal motion with cord. The result is much better internal vibration handlin
  5. Picture of Orbe SE with Gert Pedersen mods, Eminent Technology ET-2 arm, and DS-W2 cartridge.
  6. In the last sentence of my previous post I should have written "skating forces" instead of "shaking forces" and I cannot edit the post. I will post pictures.
  7. I have purchased an Eminent Technology ET-2 tangential tonearm. My plan is to make an armboard from acrylic and mount the board/arm to a modified Michell Orbe SE, modified with Gert Pedersen kits. My interest in the ET-2 is for the lack of needle skating with a tangential arm. I need this because the cartridge I am using, DS Audio W2, shows shaking forces as channel imbalance.
  8. Keep in mind the optical transducer cartridges from DS audio. The entry level E1, with their equalizer, is money but not too much to exclude consideration. There are many good reviews. https://www.ds-audio-w.biz/ds-e1-【new】/
  9. In September 2020 I switched from a moving iron cartridge to a DS-W2, optical transducer, cartridge from DS Audio, https://www.ds-audio-w.biz/ A different type of phono stage is required and I am using an EMM Labs DS-EQ1. There is a less expensive cartridge, DS-E1, and future equalizers will be less expensive. Hi-Fi News has been following the development of DS Audios cartridges for a few years. Optical cartridges were developed about 40 years ago but heat from the light source ruined the elastomer in the cartridge. Now with LED source the heat problem is solved.
  10. Stephen, an excellent device to record LP, or any source, is the Tascam DA-3000. I record DSD128 to memory card, edit with Vinyl Studio Pro, and output 192/24 for playback.
  11. USB-2 at 480 mbps can deliver all formats of audio but the cost is noise in the receiver and from the cable. Cable shielding makes a difference, look at the Lush^2 and Lush^3 discussions for experiences. I now have no USB in the signal path and am using AES/EBU into the DAC and would use optical, not Toslink (phase noise too high with cheap connector) if my DAC supported it.
  12. I have a Bryston 10B that does not react well to brownouts or power outage. I introduced an SPS but found the waveform it generated while offline caused severe problems for the 10B. I now have a better SPS, always a sine wave output when online or offline, and the 10B is not affected by power brownout or outage/restoration. The URL is for a Canadian supplier. Likely the same unit can be found in other markets. The 10B is the only component I have that needs an SPS to survive. Others have no problems or simply shutdown when power is a problem. https://www.amazon.ca/CyberPower-
  13. For A/D I use a Tascam DA-3000 recording DSD128 to a memory card. I then process the recordings on my workstation. Since I generally record vinyl the software I use on Windows 10 is VinylStudio (pro). DSD is converted to PCM 192/24 for editing but can be left as DSD if only doing track splitting. If I record something to keep it is processed with VinylStudio and put on my NAS. If the recording is temporary, ie recorded FM broadcast, I playback from the DA-3000.
  14. IMHO good vinyl playback setup is desirable if you have a significant collection of LPs worth listening to. For me vinyl playback is as good as high resolution digital with 15k$ digital playback. I do not know where this comparison goes if one has a 35k$ digital chain. Some artists now release material only at CD quality or on vinyl. The master is likely high resolution digital so the vinyl sounds much better than the CD, possibly because the low pass filter used for CD is not needed for vinyl. Good vinyl playback is not cheap, nor is good digital playback. One need
  15. Windows has APIs that enable third party authors to develop software that aid user and corporate productivity eg. single signon. One of the core concepts is the injection of a dll into another user's address space. These same APIs are used by criminals. I browse and check e-mail with an iPad and only visit trusted sites with Windows. Real time operating systems have been around for a while. The first one I recall is QNX from the late 80s. If a government can afford to go into space then it can write an operating system for the purpose.
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