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2 questions about speakers

Discussion in 'General Electronics Discussion' started by Ben King, Apr 7, 2017.

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  1. Ben King

    Ben King

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    Apr 4, 2017
    do you think a bolt will be fine to use as the core in an electromagnet for a speaker?

    also what gauge(awg) wire should I wrap around the core? I have 30 (i think) awg wire. If I use 8 strands of 30awg, to equal like 22awg, would that be fine?.......(I think probably not :D)
     
  2. Audioguru

    Audioguru

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    Sep 24, 2016
    Speakers used electromagnets about 100 years ago. They have used powerful permanent magnets ever since.
    Bolts are made in many different metals. A brass bolt will not work in an electromagnet.

    If you need a speaker then why not buy a speaker? Cheap ones sound awful but a speaker selling at a reasonable price sounds fairly good.
     
  3. Ben King

    Ben King

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    Apr 4, 2017
    IDK I like building things
     
  4. 73's de Edd

    73's de Edd

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    Aug 21, 2015
    Comparing what you are thinking against what results that you will actually get . . . .

    Now you are going into pure insanity . . . . GET A SPEAKER !
     
  5. davenn

    davenn Moderator

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    Sep 5, 2009
    OK :)
    but you are really going about in a difficult way, why not use a permanent magnet core and work from there ?
     
  6. duke37

    duke37

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    Jan 9, 2011
    A loudspeaker has a radial field so a bar magnet wll not do.
    The clearance must be very small in order to get sensitivity. I can never repair a speaker because I can not get the clearance right.
     
  7. FuZZ1L0G1C

    FuZZ1L0G1C

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    Mar 25, 2014
    Sounds like @Ben King simply wants to try a 'what if..' construction project.
    From previously making something similar (500T #33 wound on bobbin) with iron core, flat diaphragm "matched" to labyrinth speaker, the sound will most likely be poor (music) quality, resonant only at lowest frequencies around 20-60Hz. (Sounds great for bass-guitar "fuzz' effect!!).
     
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