advertisement


Recent content by e53

  1. E

    Why Four Feet?

    oh you are right, I was too distracted for a long time when I wrote and missed several posts. sorry.
  2. E

    Why Four Feet?

    I propose to use a design that combines the advantages of 3 and 4 foots. In the front part you can use traditional supports, for example, 2 foots. In the back part, on the side of the lateral foots, install auxiliary supports of arbitrary shape, slightly shorter than the main foots, for example...
  3. E

    Checking MDAC caps

    At all positions MELF. Denominations as in the original. Without R3, 6, 27, 29 - are shorted (here and below - one channel). Also in all channels. SQ. The quality of the other capacitors is not less important than the resistors. My choice, Silver Mica, MultiCap RTX. Additionally, 0.1uF between...
  4. E

    Checking MDAC caps

    The scheme has been amended. In addition, deliberately used some less powerful parts than before. Including Schottky rectifier diodes. A number of precautions have been taken, up to the drilling of additional ventilation holes in the case. Therefore, I can not recommend my specification for...
  5. E

    Checking MDAC caps

    It is not always possible to directly replace conventional electrolytic caps with organic polymer (low ESR) caps. Possible non-obvious problems. For example: http://www.acoustica.org.uk/t/3pin_reg_notes3.html
  6. E

    Checking MDAC caps

    All organic polymer caps and other electrolytic are new. Not Lelon. I will not change all the electrolytic caps to an organic polymer. I think that due to the peculiarities of circuitry, organic polymer caps will not always be better than ordinary high-quality electrolytic. A little about...
  7. E

    Checking MDAC caps

    After this, one of the first stages of tweaks, the DAC became noticeably better than stock: - Replacement of all RXY Lelon cap's; In Audio replacement of : - 24 cap's 4700uF 16V with Panasonic FK; - all MELF with Dale resistors. (Here's the next stage) Top wiev...
  8. E

    Checking MDAC caps

    Now SQ upgraded M-DAC is confidently better than a stock version. Several big PSU, Audio and a lot of small tweaks were made. This is a very laborious work. Therefore, I understand the reasons and stages of the evolution of the JohnW Project. It is easier and more correct to make a new one...
  9. E

    Checking MDAC caps

    https://www.dropbox.com/s/gpwimz93zz3d4t1/recap%20all_1.jpg?dl=0 FPCAP Nichicon cap's (red marked) purchased on the site of Mouser.ch
  10. E

    Checking MDAC caps

    My M-DAC: The oscilloscope showed the instability of the digital DC (U5 /1V2DC, 3V3D) ESS9018, which depended on the presence of the input signal and the selected input. Replacement of all Lelon OCRZ series capacitors in digital DC is not effective. IMXO, for perfectionist reasons, you...
  11. E

    Checking MDAC caps

    On my M-DAC: Tweak of the internal stabilizers digital DC, with a conventional power supply, much more increases the SQ than 5 rails clean DC. Replacement of all Lelon OCRZ series capacitors in digital DC is not effective.
  12. E

    Checking MDAC caps

    It's not as difficult as it seems. I use a fusible alloy with a low melting point. Wood's alloy (70°C) or Rose's alloy (90°C). Such as, for example: http://www.ebay.co.uk/itm/Roses-meta...8AAOSwbsBXmKrK . Caution! Wood's alloy toxic, contains cadmium. Looking good ventilation. Rose's Alloy is...
  13. E

    MDAC First Listen (part 00110111)

    A few words in support of JohnW. I consider JohnW to be an exceptionally honest and decent person. And if you look at this side ... Not an investor, so I can make mistakes in numbers. IMHO: The investor, having invested 500 £, after a few years of waiting receives the equivalent of 5,000 £...
  14. E

    Broken M-DAC ?

    By the way, the official site of Lelon now presents capacitors of the OCRZ series. Good in M-DAC. But there are no capacitors of the RXY series, which is problematic in M-DAC. http://www.lelon.com.tw/en/product.php#3
  15. E

    Broken M-DAC ?

    My experience. The price of 111 capacitors (M-DAC mainboard + PCU) for the total replacement of Lelon was about 75 € . In my opinion, when buying on e-bay, the high risk of fake capacitors.


advertisement


Back
Top