Plugging sub into receiver

Discussion in 'Speakers & Subwoofers' started by MikeH, Sep 3, 2003.

  1. MikeH

    MikeH Stunt Coordinator

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    Hi all,

    A capacitor recently blew in my sub and when I got it back from the shop the technician said I should be plugging the sub into the receiver. That way when I shut off the power to the receiver I am also shutting off power to the sub.

    Now when I bought my system a few years ago I swear I read here that this was not a good idea as that spike from on to off can cause more damage.

    What's the verdict?

    Thanks,

    Mike
     
  2. Vincent_S

    Vincent_S Second Unit

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    IMO the tech needs to go back to school. I would never plug a sub into a receiver.
     
  3. Bill Kane

    Bill Kane Screenwriter

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    The 120V outlets on the rear of receivers come with "do not exceed" power rating, typically around 100watts. They're for tape decks, CDp, turntables and the like. Look for a plate as well as in the manual.

    Sub amps will draw much more power, and aren't recommended for these switched/unswitched outlets. It puts a heat strain in the switch relay as well as the main receiver OEM power cord, which isnt too hefty to begin with.
     
  4. Joe Tilley

    Joe Tilley Supporting Actor

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    Im willing to bet the same tec would tell you you should never plug your sub into that outlet when he is fixing your recever after doing so.
     
  5. Chuck Schilling

    Chuck Schilling Stunt Coordinator

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    Mike, I'm no electrician, but I can't imagine that your receiver's switched outlets would be able to yield enough clean power to power your subwoofer without noticeable sag and loss of voltage and/or amperage. I'm not sure why your tech would recommend such a connection - I won't even plug my VCR into my receiver's switched outlets!
     
  6. ChrisLazarko

    ChrisLazarko Supporting Actor

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    Just out of curiousity is it ok to put a 2 channel equalizer on a 50W switched outlet on the back of my Harman Kardon AVR-225, it doesn't exactly say how many Watts it takes up because the tag where it says that is kinda scratched off due to old age but is it still ok or would you recommend putting it in to the 100W outlet on the reciever or just into it's own seperate outlet?

    Thanks
     
  7. Chuck Schilling

    Chuck Schilling Stunt Coordinator

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    Chris,

    An equalizer would probably be ok - there's no high draw motor or amplifier to worry about there, so I wouldn't see any problem with that at all.
     

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