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Speaker plug question

Alan Nusso, N4BV
Alan Nusso, N4BV Member
edited April 2020 in SmartSDR for Windows
I just received my 6300. I am using a West Mountain Radio Clr Speech speaker. I am only getting one side of the audio. It has a mono plug. Would the proper thing to do be to put a mono to stereo adapter on the plug? Would this cause any technical problems?

Answers

  • Duane_AC5AA
    Duane_AC5AA Member ✭✭✭
    edited May 2018
    Yes, the speaker jack requirements list a powered stereo PC speaker.  If you're hearing audio, then the Clear Speech speaker must have an internal amp.  You probably should just use a stereo plug wired for one side only (left or right), but not one that shorts the output together unless someone from Flex says you can safely do that.  Your mono plug is shorting one side to the common (ground?) when you plug it in, so I wouldn't do that!
  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited September 2015
    Alan
    The proper thing to do is get a set of stereo speakers. Don't plug a mono plug into a stereo jack. I don't know about Flex but doing that blew out a lot of audio amplifier chips on the Elecraft K3. You can use a stereo adapter but be sure it's not shorting your left and right channels together.

  • Jim KJ3P
    Jim KJ3P Member ✭✭✭
    edited April 2020
    Ditto what these gents have said. And this would be a fine time for Flex to jump in (with access to a schematic) and tell us whether the Left and Right line outputs can be combined to form a mono output (maybe a simple resistor network?).
  • pa0bie
    pa0bie Member
    edited April 2020

    Connect LEFT and RIGHT audio together with two 10K resistors and You have a stereo to mono adaptor. The active speaker outputs have a output impedance from 10k according to the FLEX 6000 harware manual.

    Jan, pa0bie

  • Jim KJ3P
    Jim KJ3P Member ✭✭✭
    edited December 2016
    This is exactly what I wanted to do, but was hoping to get Flex's okee-doakee before trying it. Some circuits with direct-coupled outputs (not capacitor-isolated) might not be happy, I dunno.
  • bruceg
    bruceg Member ✭✭
    Dumb a$$ here plugged my mono kenwood speaker into the powered jack. How much damage did I do?
  • ka9ees
    ka9ees Member ✭✭✭

    @bruceg I don't know that you have. I'd get a powered speaker and check.

  • bruceg
    bruceg Member ✭✭

    Thank you Ed!!

    73,

    Bruce N1MZI

  • bruceg
    bruceg Member ✭✭

    Just realized that I never plugged in the jack….oops…so sorry for my post.

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