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Using a powered PA speaker as a sub?

Discussion in 'Speakers' started by ChrisConklin, Oct 21, 2003.

  1. ChrisConklin

    ChrisConklin Well-Known Member

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    I'm not sure if this has ever been brought up, but would using a full range PA speaker w/ a 15 inch woofer work as a good sub? Would 2 speakers make good mains for home theater? Any difference between getting a powere speaker or speakers that come w/ an external amp?
     
  2. Tim Streagle

    Tim Streagle Well-Known Member

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    No. PA speakers are designed for maximum output, not for accuracy. They will not have the low freq. extension that you probably desire.
     
  3. Wayne A. Pflughaupt

    Wayne A. Pflughaupt Well-Known Member

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    If you’re talking about a PA speaker with a single 15” and a horn, think about what you have there. Typically the horn covers down to 1000Hz or so, and the 15” picks it up from there. So the 15” is just a big speaker doing duty all the way up to the lower midrange. I’ve RTA’d a few of these over the years and - surprisingly - they typically fall like a brick below 100Hz or so. Like Tim noted, they’re designed to play loud, not low.

    Regards,
    Wayne A. Pflughaupt
     

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