Speaker connection question, please.

Discussion in 'General Electronics Chat' started by danl, Jun 20, 2014.

  1. danl

    Thread Starter Member

    Sep 24, 2013
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    0
    I am using the amplifier board out of an old stereo boombox (JVC, 12V) for a sound system in an R/C ship model. A small MP3 player provides the auxiliary input. I am using only one of the original speakers, hooked up to one channel output.
    Can/should I also connect the second channel output to that speaker?
    Does using only one channel/speaker cause any issues?
    The model has only room for one speaker. Maximum volume is needed.
    Thanks.
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,361
    Using one channel/speaker will not cause a problem.
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,009
    3,233
    You cannot connect two outputs to the same speaker. The two will fight each other and likely one will burn out.
     
  4. danl

    Thread Starter Member

    Sep 24, 2013
    32
    0
    Thank you.
     
  5. crutschow

    Expert

    Mar 14, 2008
    13,009
    3,233
    There is one exception to my advice. If the outputs are not bridge-type (that is, both of the other speaker terminals go to circuit common) then you may be able to use the two outputs in a bridge configuration (one output to each speaker terminal). But that requires the signal to one of the amplifier inputs be which can be done with an inverting op amp circuit.
     
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