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Two mono to stereo cables - anyone found good ones?

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  • Two mono to stereo cables - anyone found good ones?

    I stupidly bought what I thought I needed weeks ago in advance of Bluebox arriving. Short Kennable cables with two female mono input jacks marked red and white going to a male stereo plug. But...they only accept one signal in (on the red I think). Turns out they only properly work in the other direction - splitting a stereo to left and right - not as a combiner cable. I have a lot of mono signals from Eurorack and also lots of stereo signals on two cables. For both scenarios I need to combine to make the most use of 6-12 tracks. Any cable suggestions please?

  • #2
    https://www.thomann.de/fr/cordial_cfy_09_wpp.htm

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    • lostforwords
      lostforwords commented
      Editing a comment
      Thanks but they're 6.3mm male on the mono end - just not practical to adapt eurorack 3.5mm to 6.3mm. I've found some little blocks that might do what I need as they should work bi-directionally i.e. combine two monos to a stereo signal. They're too thick to have 6 along the back but with extension cables might work.

    • lostforwords
      lostforwords commented
      Editing a comment
      Maybe 1010music should commission some suitable 3.5mm "combinator" cables and include them in the box or sell as a pack.

  • #3



    Last edited by geogeo; 01-24-2021, 10:51 AM.

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    • jayneural
      jayneural commented
      Editing a comment
      I am afraid I don't know the answer

      (what happened to your post ?)

  • #4
    Bumping this. I also found out the hard way that not all adapters are bidirectional. I purchased these from Sweetwater and found that they will not carry a stereo signal from L/R mono cables to one 3.5mm TRS jack.

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    • #5
      These are the best options we have found:
      https://www.sweetwater.com/store/det...nch-ts-10-foot

      https://www.sweetwater.com/store/det...inch-ts-3-foot

      https://www.sweetwater.com/store/det...ht-3.5mm-trs-f

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      • #6
        Having MADE these cables, I’d like someone to explain to me how signal can go only one direction down a wire with no other components in the circuit. What you are describing is, “I put a wire between a battery and a light. The light came on, but when I turned the wire around the light wouldn’t come on.” It’s not possible. Copper is a conductor, not a semi conductor. Either you have a faulty connection and aren’t causing the fault when the cable is one direction (which is absurd)... or.... They put components in the cable and made it so signal only flows one way... which makes the cable more expensive, and then charged regular price..... which is absurd.

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        • #7
          I've made this 2hp dual splitter for it, feel free to grab the gerbers if you know what to do with them, or hit me up if you are in eu, got some spares.
          https://github.com/wtkdwc/eurorack/tree/main/s2m

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          • #8
            These cables work well and the stereo plugs are thin enough to have six plugged in at once...

            https://www.amazon.co.uk/gp/product/B0768DYTDG/

            https://www.amazon.co.uk/gp/product/B08HRN5VYQ/

            Not particularly cheap but good quality.

            Comment


            • #9
              Originally posted by MrEUser View Post
              Having MADE these cables, I’d like someone to explain to me how signal can go only one direction down a wire with no other components in the circuit. What you are describing is, “I put a wire between a battery and a light. The light came on, but when I turned the wire around the light wouldn’t come on.” It’s not possible. Copper is a conductor, not a semi conductor. Either you have a faulty connection and aren’t causing the fault when the cable is one direction (which is absurd)... or.... They put components in the cable and made it so signal only flows one way... which makes the cable more expensive, and then charged regular price..... which is absurd.
              The linked item is a “headphone splitter”. It is designed to take a stereo TRS and send copies of that stereo signal out two separate TRS paths. That is not a dual mono TS to single stereo TRS as needed for this application, and I agree should work in either direction. I don’t know exactly what happens with a headphone splitter in reverse electronically, but I’m not surprised it doesn’t work for this application

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              • #10
                Said another way, you want a splitter. Something that takes the stereo signal and breaks that out into individual mono (left and right) signals. Do not buy a headphone Y connector meant to allow two sets of headphones connect to the same output.

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                • #11

                  I (the OP) have found these HOSA YMM-261 cables which arrived today work perfectly and they're a nice squished design (oval not round) at the Bluebox end so 6 will fit side by side. (Amazon and ebay sell them in the UK)

                  Click image for larger version

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                  • 0101-Usr
                    0101-Usr commented
                    Editing a comment
                    What kind of cables do you use to plug in to this adapter and instrument? I have the same adapter but I used with stereo connection cable (for connection with mono instrument) and then... only channel one works.

                  • lostforwords
                    lostforwords commented
                    Editing a comment
                    I'm using 3.5mm mono cables for a Eurorack system. The adapter cable only accepts mono on each channel, either left and right from a stereo source or you can stick in two different mono sources and separate them into different tracks in the Bluebox.

                  • spldid
                    spldid commented
                    Editing a comment
                    Yes I bought the same hosa cables and they are great for this, especially the side of the male enclosure is ok to put several next to eachother. There is also a 6.5mm females to 3.5mm male version which is convenient for instruments previously wired to a conventional mixer.

                • #12
                  I can confirm that the "Black Market" brand stereo breakout cables work fine, each gives me two good mono inputs and there's plenty of room if you use them on all six input jacks. Plus, they're cheap.
                  https://www.sweetwater.com/store/det...ht-3.5mm-trs-f
                  Last edited by Emile01; 01-29-2021, 10:15 PM.

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                  • #13
                    Originally posted by Emile01 View Post

                    I can confirm that the "Black Market" brand stereo breakout cables work fine, each gives me two good mono inputs and there's plenty of room if you use them on all six input jacks. Plus, they're cheap.
                    https://www.sweetwater.com/store/det...ht-3.5mm-trs-f
                    I can't tell from the description on Sweetwater -- do those "Black Market" breakout cables come as a set of 4, or do you get a single cable?

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                    • #14
                      https://www.ebay.com/itm/1FT-20FT-Mo...53.m2749.l2649

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