Audio Amp Maximums w/o Damage?

Discussion in 'General Electronics Chat' started by djsfantasi, Jan 20, 2014.

  1. djsfantasi

    Thread Starter AAC Fanatic!

    Apr 11, 2010
    2,802
    832
    Subtitled: Knowing Just Enough To Be Dangerous

    This thread got me thinking: http://forum.allaboutcircuits.com/showthread.php?t=93669

    Many years ago, I volunteered to help out at a Haunted House fundraiser for the PTO. They had been connecting a boom box to multiple speakers in parallel, some on one channel, some on the other. As I remember it, there were probably 8 -10 speakers total. But the volume was too low.

    I got a larger amplifier (300 watts). Then I purchased 8 ohm speakers, wired two in series and then wiring that parallel to another set. I figured that the load in that case would be 8 ohms. This was wired to one of the channels from the amp. The second stereo channel was configured the same way.

    Was I just lucky that this worked? How should I have analyzed it instead?

    Thanks
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,436
    3,360
    Intuitively you did the correct thing - how to wire four 8Ω speakers and still end up with 8Ω load to the amp.

    That was not luck. That was smart thinking!:)
     
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