How to daisy chain speakers?

Discussion in 'Archived Threads 2001-2004' started by Shawn O, Jul 27, 2002.

  1. Shawn O

    Shawn O Stunt Coordinator

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    Could someone please tell me how to correctly "daisy-chain" two sets of speakers?

    Thank you,
    Shawn
     
  2. John F. Palacio

    John F. Palacio Supporting Actor

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    Do you mean wiring them in series?

    Wiring speakers in series is not recommended, due to sonic degradations. Complete explanations of why might be beyond the scope of this thread.

    But if you must:
    + of the amp to + of spkr# 1
    - of spkr # 1 to + of spkr # 2
    - of spkr # 2 to - of the amp
     
  3. Phil_DC

    Phil_DC Stunt Coordinator

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    Intresting, I have wondered how some HT owners with long narrow rooms were able to place 4 to 6 side surrounds.I guess thats one way.

    Would it not be better just to get an additional 2 or 4 channel amp and share the signal that way?
     
  4. Shawn O

    Shawn O Stunt Coordinator

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    Thanks John,

    Yes "series" was the word that I was looking for.

    Shawn
     
  5. Aaron Garman

    Aaron Garman Second Unit

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    Hello all. Is this how they wire surrounds in large movie theatres?

    Aaron Garman
     
  6. James Bergeron

    James Bergeron Supporting Actor

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    No wire them in parallel. I have an extra set of surrounds for my 2nd and 3rd row. This set can be switched from a 7.1 setup to 2 set's for 5.1. I wired them in parallel, in other words plug 2 sets of wires into your amp.

    Only do this if your amp can handle a 4ohm or less load.
     
  7. John F. Palacio

    John F. Palacio Supporting Actor

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    Phil_DC says: Intresting, I have wondered how some HT owners with long narrow rooms were able to place 4 to 6 side surrounds.I guess thats one way.

    Would it not be better just to get an additional 2 or 4 channel amp and share the signal that way?"

    Additional amps are absolutely the right way to go. The original thread just asked about daisy chaining, not anything else.
     
  8. John F. Palacio

    John F. Palacio Supporting Actor

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    "Aaron Garman says; Hello all. Is this (series connection) how they wire surrounds in large movie theatres?

    Aaron Garman"

    I would seriously doubt it. Al the ones I know of run separate amps for each speaker.
     
  9. Brian Fellmeth

    Brian Fellmeth Supporting Actor

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  10. Geoff S

    Geoff S Stunt Coordinator

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    Be careful when running speakers in series you can seriously hurt your amplifier, or speakers, or both. You do need a 4 ohm or less load from the amp to do this, and on speakers higher than 4 ohms, and it can work successfully since surrounds are not used as hard as any of the other speakers, but be forewarned.
    But for better sound quality, and no risk, get separate amps to drive multiple rows of surrounds. Everyone is recomending it, so if you can afford it, do it. Either a 2 channel amp with A/B speaker outs (4 speakers from 2 preouts), or a Y connector from each surround pre-amp going to two separate, two speaker amps.
    I couldn't see any theater sensibly running the surrounds in series cause those speakers have to play loud and there are usually, 3, 5, sometimes 7 surrounds per side! 3 is a slim possibility, the rest, no chance. They would use separate amps, or specially made amps the would take a single surround channel from the processor pre-out to the amp, and that amp would have discrete power supplys and amps to run 5 or more speakers playing the same signal. But don't quote me on that cause it is a guess as to what they actually use... I'm tempted next time when I got to my local Edwards Cinema to sneak into the projection area to see what kind of equipment they're running. [​IMG]
     
  11. John F. Palacio

    John F. Palacio Supporting Actor

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    "Be careful when running speakers in series you can seriously hurt your amplifier, or speakers, or both. You do need a 4 ohm or less load from the amp to do this, and on speakers higher than 4 ohms, and it can work successfully since surrounds are not used as hard as any of the other speakers, but be forewarned."
    I have to respectfully but emphatically disagree. When you run speakers in series the impedance seen by the amp goes up and it won't be able to provide full output power to the speakers, but there will be no damage done. Two 8 ohm speakers in series will give you 16 ohms which means the amp (assuming a transformerless amp, which is the majority) will only able to deliver 1/2 the power it normally would. Same math will apply to 4 ohm speakers. Sonically it is not wonderful nor efficient, but you are not going to hurt anything with the possible exception of your ears.
    [​IMG]
     
  12. Brian Fellmeth

    Brian Fellmeth Supporting Actor

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    Hate to pick on Geoff, but I also must disagree with another part of his post as well. In the second paragraph:
     

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