1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Flat tiny speaker

  1. Jun 7, 2007 #1
    Does anyone know where I can find a flat tiny speaker, lets say for arguments sake roughly the size of a quarter, that can produce a reasonably loud audible tone?


  2. jcsd
  3. Jun 7, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    You're looking for a piezo buzzer, I'd guess. Check with digikey or newark or any other electronics distributor.

    - Warren
  4. Jun 12, 2007 #3


    User Avatar

    Don't use a piezo disc or piezo buzzer unless you want
    an audible *tone* i.e. something that's good at buzzing /
    beeping at a given relatively fixed frequency.

    If you want to reproduce a wide(r) range of audio frequencies through it as a speaker, you should get something that's sold as a speaker.

    Check digikey.com, mouser.com, newark.com,
    et. al.

    You'll have a hard time finding something that's BOTH
    the diameter of a quarter or so AND as flat as a quarter
    that's good at being loud and acts as a good speaker
    over the audio range. For full fledged speaker function,
    look for something the thickness of 3 to 8 stacked quarters,
    or something a bit bigger in diameter but thinner.

    Check your local junk cell phone or small earphones or
    headphones for cheap or free tiny speakers, though
    the cellphone / headphone ones will tend to be a bit
    thicker, and the earphone ones don't put out so much
    audio power.
  5. Jun 12, 2007 #4


    User Avatar

  6. Oct 6, 2010 #5
  7. Oct 10, 2010 #6
    Be sure to let your speakers "speak." Sealing them up in a box, like we often do peizo's, is enough. You'll end up with a product that can only be hear from 1-2 feet.
    Speakers need an opening.
  8. Oct 10, 2010 #7
    you can buy those greeting cards that play music when you open them.they have buzzers the right size that sound ok.
  9. Apr 9, 2012 #8
    In the Berlin of the 20th there was a competing "Blatthaller" Speaker with a parallel noise emission. New edited and brought to HiFi Quality. With a deepth of 20mm and a clear bass. Who is able to commercialise it. ? See also www.eysono.com
  10. Apr 9, 2012 #9


    User Avatar
    Science Advisor
    Gold Member

    or failing all of the above

    rat one out of a mobile phone, there's zillions of them out there no longer used
    you probably have an old one in your drawer at home, I have a bunch of them

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Flat tiny speaker
  1. Speaker Questions (Replies: 0)

  2. Speaker's impedance (Replies: 4)

  3. Speaker circuit (Replies: 3)

  4. Speaker enclosure (Replies: 11)