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  1. #1

    Replacement power cable for Lumin X1

    I'd like a very short umbilical to connect the X1 to it's power supply. Has anyone ventured into the world of replacing that cable and, if you have, do you have any specifics that you could share?

    Thank you! Stay safe!

  2. #2
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    Re: Replacement power cable for Lumin X1

    If i am not completely mistaken , i remember having read a review where they mention Westminster Lab, makes a cord that should make a good difference.
    If i find that review i will be back with the link , for you.
    Flemming

  3. #3
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    Re: Replacement power cable for Lumin X1

    Well now i found the review , and its mentioned almost at the end.
    Mono and Stereo: LUMIN X1 REVIEW
    Flemming

  4. #4

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by FDPDK View Post
    If i am not completely mistaken , i remember having read a review where they mention Westminster Lab, makes a cord that should make a good difference.
    If i find that review i will be back with the link , for you.
    Thanks much. It's not that I don't like the cable that is provided I just need a much shorter one. I'll check for Westminster Lab as well.

  5. #5

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by FDPDK View Post
    Well now i found the review , and its mentioned almost at the end.
    Mono and Stereo: LUMIN X1 REVIEW
    Thanks Flemming. I wrote them an RFQ on a 0.5 meter cable. If it pans out I'll post back here. Take care

    Joe

  6. #6
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    Re: Replacement power cable for Lumin X1

    Please let us know if there is any audio improvements. I quickly looked through the article, and didn't see any comments on the cable.
    Bud

    Lumin X1
    Sony XA-5400ES SACD
    Pass XP-22 pre, X600.5 amps
    Magico S5 MKII Mcast Rose speakers, SPOD spikes

    Shunyata Triton v3/Typhon QR for preamp, Denali 2000 (2) for amps
    Shunyata Sigma XLR analog ICs, Sigma speaker cables
    Shunyata Sigma HC (2), Sigma Analog, Sigma Digital, Z Anaconda (3) power cables

    Mapleshade Samson V.3 four shelf solid maple rack, Micropoint brass footers
    Three 20 amp circuits.

  7. #7
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    Re: Replacement power cable for Lumin X1

    I’d be interested as well, assuming the A1 and X1 use the same cable. A shorter cable would look tidier than the 2 meter + cable that comes stock.
    Gary
    Accuphase E-650; Luxman L-507; Lumin A1; Tannoy Canterbury GR

  8. #8

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by Oly View Post
    I’d be interested as well, assuming the A1 and X1 use the same cable. A shorter cable would look tidier than the 2 meter + cable that comes stock.
    For me, about a 0.5 meter cable would be perfect. I know the X1 has a nine-pin connector and I forget what the A1 had. They may not be a direct replacement but, as always, I could be wrong.

  9. #9
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    Re: Replacement power cable for Lumin X1

    Just looked and the A1 uses 8 pins rather than 9
    Gary
    Accuphase E-650; Luxman L-507; Lumin A1; Tannoy Canterbury GR

  10. #10
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    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by Oly View Post
    I’d be interested as well, assuming the A1 and X1 use the same cable. A shorter cable would look tidier than the 2 meter + cable that comes stock.
    Exactly, the A1 is 8 pins and the X1 9, but if I'm not mistaken, the X1 cable is thicker and the connectors are of better quality.
    Accuphase E-370 Cable de alimentación Shunyata Delta NR
    Lumin X1 Cable de alimentación Shunyata NR Venom V10
    ProAc Response D18 Cable de altavoz Bi Wiring PAD Musaeus Luminist
    Cable de interconexión XLR PAD Musaeus Luminist

  11. #11

    Re: Replacement power cable for Lumin X1

    I was contacted by the good folks at WestminsterLab in response to my email and now am in the process of trying to raid the piggy bank and check the couch cushions to come up with the means to purchase the 0.6m cable I'd like. I'll keep you posted.

  12. #12
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    Re: Replacement power cable for Lumin X1

    That sounds really interesting , fingers crossed .
    Flemming

  13. #13

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by FDPDK View Post
    That sounds really interesting , fingers crossed .
    I've decided it was a little rich for my blood. I wasn't really looking for a sound quality improvement but, rather, cleaning up the rat's next behind my equipment. I may choose to source the connectors myself and reverse engineer the one I have or get out the wire cutters and soldering station and re-terminate the one I have.

  14. #14
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    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by BlueSky View Post
    I've decided it was a little rich for my blood. I wasn't really looking for a sound quality improvement but, rather, cleaning up the rat's next behind my equipment. I may choose to source the connectors myself and reverse engineer the one I have or get out the wire cutters and soldering station and re-terminate the one I have.
    The making of the cable can be difficult. Even if you choose to DIY, do not modify the original cable.
    Peter Lie
    LUMIN Firmware Lead

  15. #15

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by wklie View Post
    The making of the cable can be difficult. Even if you choose to DIY, do not modify the original cable.
    Message received. How about considering offering to make some short ones that we could purchase. I suspect most of us have the PS relatively close to the main unit and this certainly would be helpful.

    Respectfully...........

  16. #16
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    Re: Replacement power cable for Lumin X1

    I’ve looked into a new cord for my bryston BP26 and was told by a audio dealer they don’t make a sound quality difference.

  17. #17

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by schmidtmike76 View Post
    I’ve looked into a new cord for my bryston BP26 and was told by a audio dealer they don’t make a sound quality difference.
    I would agree with that assessment. I was looking at it from an aesthetic purpose only. The Hirose (HSE) connectors or equivalent is going to be the real show stopper for me as they don't seem to be available. Probably a custom connector that Lumin had made. If anyone knows of a substitute connector I'd appreciate it.

  18. #18

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by BlueSky View Post
    I've decided it was a little rich for my blood. I wasn't really looking for a sound quality improvement but, rather, cleaning up the rat's next behind my equipment. I may choose to source the connectors myself and reverse engineer the one I have or get out the wire cutters and soldering station and re-terminate the one I have.
    Update: I "undecided" that it was too rich for my blood and have placed an order with Angus of WestminsterLab for a 0.6m carbon fiber wrapped replacement cable. I expect it sometime next week and I will keep you all posted with unboxing, installation, break in and findings. Part of the reason I decided to give it a try is the "vibe" I got exchanging emails with the owner and his willingness to share details about construction techniques, materials used, etc. This kind of willingness to communicate goes along way with me.

  19. #19

    Re: Replacement power cable for Lumin X1

    I explored the same venture quite some time ago. There is nothing complicated about the cable, even the cable connectors are available for purchase through various retailers online. But what I do recall is that a couple of the pins carried a bit more current than others, and a few weren't even used. So changing out the cable would be a little more complicated but shortening it with the factory one would be quite easy as long as you ensure that you reconnect each lead back to exactly the same pin position.

    If you're curious why Lumin doesn't just say "Sure!" to a shorter cable request its because they don't manufacture it themselves. They bring it in, in bulk, in the factory length and asking their supplier for a single shorter length, I assume, isn't worth the trouble or potentially additional cost. A factory cable replacement cost $200 USD last time I checked.

  20. #20

    Re: Replacement power cable for Lumin X1

    Thanks for that. I did disassemble one of the connectors and can confirm what you said regarding the relative ease of shortening the end of the cable. Nothing extraordinary there.

    That being said, I did place an order with WestminsterLab and it was being "run in" and should ship to me by FedEX tomorrow, Monday, H.K. time. It was an order of magnitude more expensive than the replacement cost you mentioned above but it is what it is.

    I'll post my findings upon receipt and installation of the 0.6m cable. Although not expecting much but prior to doing the final break-in and listening tests on the new cable, I am going to do a little testing with an ultra sensitive nano-volt meter to determine if the Lumin's output quiescent noise level is different on the new cable as opposed to the old one.

  21. #21

    Re: Replacement power cable for Lumin X1

    Agreed, the same offer was made to me at around $1200 if I recall correctly. Keep in mind that the man behind Westminster is also involved in Lumin. So there certainly is some reciprocal benefit from “up-selling” to that cable. Im curious to hear your impressions.

  22. #22

    Re: Replacement power cable for Lumin X1

    Oh my. I didn't know that there was a "connection" between the two companies and now, that I know that, I am not sure how that makes me feel but it is what it is and "caveat emptor" always applies. Always do your due diligence when it comes to anything. BTW, the offer they made to you was pretty good in comparison.

    I will be happy to let you know my thoughts on the new cable when I get it.

  23. #23

    Re: Replacement power cable for Lumin X1

    I received my new cable this morning. WestminsterLab used the fastest FedEx shipping method and I would have had it overnight except the US Customs folks needed to be satisfied that everything was on the up and up. Thanks for the quick shipping!

    Opening the box caused me a bit of surprise. I believe that I had read somewhere that the new Lumin X1 power supply had used a 9-pin connector. To my surprise, the the new cable had 10-pin Hirose connectors which sent a chill up my spine. What if the new cable did not work?? Not to worry, because, when I checked the OEM cable, it was found to also be in a 10-pin configuration. Either the literature I read was wrong or my memory had failed.

    In any event, before replacing the cable, I borrowed a friend's Keithley 2182A nano-volt meter to do some, probably useless, measurements of the noise at the output of the X1. I connected the meter to the X1's left channel XLR output terminated in a "dummy load" of 20kohms and played a track ripped from a "SilentCD". The tracks on this disk are described as absolute silence and, with the OEM cable, I measured an RMS voltage level of about .0063741mv which I assume is the noise level of the output. I then swapped in the new 0.6m Westminster cable with the optional carbon fiber wrap, played the same track and took the measurement. The RMS value of the noise I measured dropped from .0063741mv to .0042476mv. If my calculations are correct, that appears to be about a -3db drop in "noise" at the output just by changing from the long OEM to this shorter custom cable. I don't know what to attribute the loss to but maybe it's the shorter length and possibly the shielding of the cable. I am also not saying that the drop in output noise level would ever be audible but it is just a data point. (Please note that I was unable to hear any audible noise through the speakers that I could attribute to the X1 with my ear against the speaker's tweeter and mid range speakers with either cable.)

    Keeping my fingers crossed, I am going to let the cable settle in for a while before doing any critical listening but I will post my findings when I get a chance to sit for a spell.

  24. #24
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    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by BlueSky View Post
    The RMS value of the noise I measured dropped from .0063741mv to .0042476mv. If my calculations are correct, that appears to be about a -3db drop in "noise" at the output just by changing from the long OEM to this shorter custom cable.
    I input these values into a web site calculator and got -3.5dB.
    Peter Lie
    LUMIN Firmware Lead

  25. #25

    Re: Replacement power cable for Lumin X1

    Quote Originally Posted by wklie View Post
    I input these values into a web site calculator and got -3.5dB.
    Peter, thanks for the correction. I am still a little surprised that I was able to detect any measurable difference at all but the nano-volt meter is pretty sensitive I guess. Now I wish I had an audio or spectrum analyzer to find out just where the noise frequencies that I am measuring reside. In any event this is pretty exciting to me.

  26. #26
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    Re: Replacement power cable for Lumin X1

    I am more interested in what differences you will be able to hear / or not hear. And would also be nice with a photo of the cable.
    Flemming

  27. #27

    Re: Replacement power cable for Lumin X1

    I have tried to upload a picture using the "manage attachments" function below and hope it "takes".

    I, for one, have never been able to hear audible differences between line fuses but I will provide my thoughts regarding s.q. changes, plus or minus, at a later date. And because, hearing can be so subjective your mileage may vary of course. Since a cable swap can be accomplished in less than a minute I should be able to do some comparisons without loosing the sense of what each cable "sounds" like.
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