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Question about emic? — Parallax Forums

Question about emic?

magnetomagneto Posts: 7
edited 2009-01-02 04:20 in BASIC Stamp
I have a·6 ohm big speaker (80 watt) , can I use it with Emic ?
·
I can put 2 ohm in series with the speaker to make it 8 ohm , but I afraid that I could damage the Emic or my BS2 since it is a stereo speaker and also·80 watt?
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Can anybody help me with that?
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note: I used· 16 and 32·ohm Headsets with the Emic and·they works!
·

Comments

  • Tracy AllenTracy Allen Posts: 6,662
    edited 2009-01-01 19:26
    No, that would be like trying to start a car with a watch battery. You really will need a power amplifier between the EMIC and the big speaker.

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    Tracy Allen
    www.emesystems.com
  • $WMc%$WMc% Posts: 1,884
    edited 2009-01-02 00:30
    Magneto

    You'll need to Amplify the audio signal from the "EMIC" as the out is very low.

    I've used the EMIC on My "BS2 PRO.DEV.Board" with the on board LM386 amp. And I could barely hear the audio from it at MAX gain.

    Jaycar and Ramsey sell some good high gain amps."Kit Form" that would fit Your application well. Some range to over 100 Watts RMS.

    One last thing: Don't try to drive a speaker with the EMIC or any BS$ stamp output pins without the use of an AMP./OP-AMP. in the loop.

    Take a look at I/O output current! with both the $STAMP and the EMIC!!!!

    __HOW TO KEEP THE SMOKE IN________________$WMc%_______Happy New Year

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  • HumanoidoHumanoido Posts: 5,770
    edited 2009-01-02 01:54
    I have an 8 ohm speaker, about 3-inches diameter,
    connected to the EMIC TTS board at the (SP+) and
    (SP-) terminals. The programmers setting sets the
    volume. With all the ambient noise in the room, it
    still produces substantial volume. Note that as the
    volume increases, the amp draw goes up. This is
    probably an issue when running it off batteries. This
    is a way to use a speaker without a power amp.

    You can hear what it sounds like near a midrange
    setting, somewhere in this movie.

    it.youtube.com/watch?v=huukEEwy-3E

    humanoido
  • magnetomagneto Posts: 7
    edited 2009-01-02 04:20
    Thank you all.
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