Connect with us

How to boost audio volume coming from a telephone

Discussion in 'Audio' started by Corrector, Oct 5, 2012.

  1. Corrector

    Corrector

    13
    0
    Oct 5, 2012
    So I have this circuitry in the attachment

    [​IMG]

    • 4p4c goes to a telephone plug
    • LSteil means the part of the telephone that emits audio data, ie the speaker
    • Mikroteil means the part of the telephone that receives what is being spoken ie the microphone
    • KopfhörerEingang goes to a Socket to put a Headset's headphones plug in
    • the connector at the bottommost goes into the headphones output at a computer's soundcard
    • Übertrager 1:6 is an audio transformer/transducer
    • Masse is Mass
    • Links is Left
    • Rechts is Right
    • Signal is signal

    Purpose is to connect the soundcard with a telephone to also play computer generated samples over phone, while listening and talking using a headset with two cables(microphone and speaker).

    It works with one drawback: The Headset's speaker is low volume. How to boost the Headset's speaker's volume? When picking up the telephone handset the volume is high enough but using the Headset's speaker using the circuitry it isn't.
     
    Last edited: Oct 5, 2012
  2. Corrector

    Corrector

    13
    0
    Oct 5, 2012
    Don't everybody speak up at once!
     
  3. Raven Luni

    Raven Luni

    798
    7
    Oct 15, 2011
    Sounds like you need to use a separate powered amplifier for your speaker. A small transistor-based one should be fine - maybe class B or AB given the use of transformers in your circuit.
     
  4. Corrector

    Corrector

    13
    0
    Oct 5, 2012
    Like this Class AB Amplifier?
    What does that mean?

    PS: What are your comments regarding the circuitry?
     
    Last edited: Oct 5, 2012
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    Where are your manners?

    I may come back to this thread if I have time after replying to people who make the effort at being polite.
     
  6. Corrector

    Corrector

    13
    0
    Oct 5, 2012
    Go find a beautiful women who satisfies you and don't come back before you'll have accomplished that.
     
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    I already have one thanks.
     
  8. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    648
    May 8, 2012
    He obviously discarded his copy of "How To Make Friends & Influence People". :rolleyes:

    Chris
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-