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Singxer SU-1 Owners

Discussion in 'Dedicated Source Components' started by t bone, Mar 7, 2017.
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  1. bflat
  2. JerryLeeds
    I swapped out my power supply to use an external UpTone lps1
    What is the custom Chinese company where I can order a custom DC power cable?
     
  3. BlueDL
    I think it’s Ghent Audio.
     
  4. JerryLeeds
    Thanks
     
  5. elan120
    Make sure to ask for JSSG option. It is not listed on their website, so if you order directly from website, you will get the non-JSSG version.
     
  6. Thenewguy007
    I bought the Ghent Audio DC cable & it doesn't work with the LPS1 & SU-1.

    Did the lack of the JSSG option have anything to do with it?
     
  7. elan120
    Not knowing what "doesn't work with the LPS1 & SU-1" means, the lack of JSSG should not be part of that issue, since JSSG option is to help reduce possible high frequency noise, and would not make the cable "not working". What isn't working on your cable?
     
  8. jcn3
    what do you mean by doesn't work? do you mean doesn't fit? what size barrel did you order?
     
  9. Thenewguy007
    I ordered the stand plug type, it sorta fits
    This is the one I bought (on top) compared to the regular cable I'm using at the bottom.
    20171201_002647.jpg

    The plug types seem to be the same, except it's a little longer the Ghent.
    20171201_002712.jpg
     
  10. elan120
    Did you order your cable from http://ghentaudio.com/part/list-dc.html

    The "standard" plug doesn't look like is an option from Ghent Audio though.
     
  11. bflat
    For DC plugs, the length doesn't matter as long as it's a couple mm different. The outside diameter looks about the same so there are a few possibilities:

    1) inside diameter of the plug could be different. For the most common 5.5mm plug, there are 2 different inside diameters - 2.1 and 2.5 mm. Most receptacles work with both but not all.
    2) the polarity is reversed. Unlike AC that works regardless of polarity, DC only works when the polarities are exactly matched. You have to confirm with the cable maker on how they wired the center and outer sleeve of the plug and then confirm that it matches the receptacle on the SU-1.
    3) the connection from the DC receptacle to the SU-1 PCB is reversed from what it should be.
     
  12. Thenewguy007
    I bought it from their eBay link, that was the only option they had for DC cables.

    Kinda looks different from my stock cable, could be it?
    20171201_002736.jpg
     
  13. bflat
    Hard to say by eye. Your cable maker and SU-1 mod maker should be able to tell you the exact specs. The plug on the right seems to be a design that fits a range of inner diameters as there are 2 spring loaded contacts. The left plug is definitely a fixed inner diameter. If the left is your stock cable, then I think your right plug should fit. If you can borrow a multimeter, you could figure out what's wrong in about 30 sec. Set to DC voltage and measure the volts on your working plug - red lead touching the inner part of the plug, black lead touching the outer part of the plug (assuming center +). Then connect your new cable to your power supply and measure the other end the same way. If you get no reading then you have a connection failure. If you get a negative reading, then your new cable is wired in reverse on one end.

    If both cables produce the same voltage reading, then that would mean your new cable does not fit the receptacle of your SU-1 mod.

    Edit - Ghent Audio's eBay store sells both 2.1mm and 2.5mm inner diameter DC plugs. I believe Uptone LPS uses 2.1mm. Look at your eBay receipt. It seems all of their cables have 2.5 or 2.1 in the part number.
     
    Last edited: Jan 31, 2018
    Thenewguy007 likes this.
  14. jcn3
    as was mentioned -- the interior diameter is where there's usually variability -- either 2.5 mm or 2.1 mm. trying to use a 2.5 mm interior diameter cable with a 2.1 mm device (like an lps-1 or the kitsune lps-1 adaper kit) can result in poor connections. i bet your connectors are 5.5 mm x 2.5 mm so they're too big/don't fit well.
     
    Last edited: Feb 1, 2018
  15. robi20064
    Anyone ever tried to connect an SU-1 to an Aqua dac using i2s? It would require a special cable as the Aqua i2s is RJ45 based, but it shall be possible.
     
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