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  • please confirm my cat5 mic wiring set up

    From George Garth@2:221/10 to All on Fri May 8 13:59:14 2026
    After several weeks since my prior post, I am finally back to the
    microphone project. The two electret capsules will be located about 30
    feet away from the recorder and I am ready to configure the mic to
    recorder wiring as star quad as Liz T suggested. However, as she and I corresponded about a mono set up, I will actually be using stereo. Here
    is what I believe is the correct wiring set up and please by all means
    correct me if I am wrong:

    https://i.imgur.com/ARKS4jt.png

    I have some clip on toroids on the way in case there are any noise issues.

    Thanks again for your help.

    GG



    ---
    * Origin: rbb pygate - the fidonet nntp junction (2:221/10.0)
  • From Liz Tuddenham@2:221/10 to All on Fri May 8 21:46:23 2026
    George Garth <none@nowhere.com> wrote:

    [...]

    https://i.imgur.com/ARKS4jt.png

    "Content not viewable in your region"


    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk

    ---
    * Origin: rbb pygate - the fidonet nntp junction (2:221/10.0)
  • From George Garth@2:221/10 to All on Fri May 8 17:24:08 2026
    Sorry, try this one, says it works in the UK:

    https://postimg.cc/GHnPgnYR

    Just for clarification, this is the endpoints of around 30 feet of cat5
    cable, wired star quad, for two electrode, two electret capsules to be operated stereo. 1/8" stereo jack at the end opposite the capsules.

    Thanks in advance.


    On 5/8/26 4:46 PM, Liz Tuddenham wrote:
    George Garth <none@nowhere.com> wrote:

    [...]

    https://i.imgur.com/ARKS4jt.png

    "Content not viewable in your region"


    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk


    ---
    * Origin: rbb pygate - the fidonet nntp junction (2:221/10.0)
  • From George Garth@2:221/10 to All on Fri May 8 17:26:23 2026
    Sorry, forgot to mention that the cat5 I have is non-shielded, just has
    the four wire pairs inside the jacket.

    On 5/8/26 5:24 PM, George Garth wrote:
    Sorry, try this one, says it works in the UK:

    https://postimg.cc/GHnPgnYR

    Just for clarification, this is the endpoints of around 30 feet of cat5 cable, wired star quad, for two electrode, two electret capsules to be operated stereo. 1/8" stereo jack at the end opposite the capsules.

    Thanks in advance.


    On 5/8/26 4:46 PM, Liz Tuddenham wrote:
    George Garth <none@nowhere.com> wrote:

    [...]

    https://i.imgur.com/ARKS4jt.png

    "Content not viewable in your region"


    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk



    ---
    * Origin: rbb pygate - the fidonet nntp junction (2:221/10.0)
  • From Liz Tuddenham@2:221/10 to All on Sat May 9 10:53:27 2026
    George Garth <none@nowhere.com> wrote:

    Sorry, try this one, says it works in the UK:

    https://postimg.cc/GHnPgnYR

    Just for clarification, this is the endpoints of around 30 feet of cat5 cable, wired star quad, for two electrode, two electret capsules to be operated stereo. 1/8" stereo jack at the end opposite the capsules.

    That's not how I would have wired it - but I had been assuming two
    4-wire cables, one for each capsule.

    The text on that drawing does not mention the vital point that the
    inputs to the amplifier must be balanced if the cable is going to work
    as starquad - in fact point 3 suggests to me that they aren't balanced
    at all, as any grounding must be completley separate from the signal
    wires and should not be connected to the capsules.

    You might get an accepatable result by following those instructions, but
    that isn't the right way to use starquad. As you have spare cable, you
    could try it and see, leaving a bit extra so you can cut off and re-make
    the terminations if you need to change them.



    --
    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk

    ---
    * Origin: rbb pygate - the fidonet nntp junction (2:221/10.0)