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Thread: Another 'how do I do this'?

  1. #1
    Forum Member CyberStrat's Avatar
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    Another 'how do I do this'?

    I have an outdoor gig next weekend and we want to utilize all our gear, which is limited.

    We want to run 4 15/horn speakers. Our signal is mono and the signal from the EQ(XLR) needs to be split to both sids of my Crown XLS602 amp.

    Can I just use a XLR splitter? Any issues with signal loss/noise?

    The local music store is telling me to bridge the amp and chain the speakers. This creates a 2 ohm load, & the Crown can handle that load.

    Is the splitter ok? is there another way to do this?

    Cyber

  2. #2
    Forum Member rudutch's Avatar
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    Re: Another 'how do I do this'?

    http://www.crownaudio.com/pdf/amps/139441.pdf page 13

    assuming your speakers are 8 ohms, paralleling them all will give you 2 ohms
    do I look like I know what I'm doing?

  3. #3
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    Re: Another 'how do I do this'?

    Yes the ohm load would be 2 ohms and the amp can't handle that, so

    I'm back to splitting the signal. Is that ok? Why would my local shop tell me not to do that?

  4. #4
    Forum Member rudutch's Avatar
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    Re: Another 'how do I do this'?

    then you need to series / parallel them

    figure 3 below will yield 8 ohms as far as your amp is concerned (assuming all the speakers are 8 ohms)



    http://www.bcae1.com/spkrmlti.htm
    do I look like I know what I'm doing?

  5. #5
    Forum Member CyberStrat's Avatar
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    Re: Another 'how do I do this'?

    I thought I could do that, but I didn't want to have to do that for one gig. Most of our indoor gigs are small and we only use 2 - 15's & 2 - monitors, each running off one side of the amp.

  6. #6
    Forum Member rudutch's Avatar
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    Re: Another 'how do I do this'?

    you can split the inputs (requires some soldering short cable and a second connector) this is fairly easy with 1/4" jacks, I have not tried it with XLR's
    do I look like I know what I'm doing?

  7. #7
    Forum Member Wilko's Avatar
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    Re: Another 'how do I do this'?

    if you split the signal, you'll have half the input strength to your amps two channels.

    Is bridging a problem? Many modern amps have a simple switch to do it.

    How 'bout your mixer. What output options does it have? You could use aux or monitor out as a channel

  8. #8
    Forum Member CyberStrat's Avatar
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    Re: Another 'how do I do this'?

    Outputs from the mixer isn't the problem, it only has one in/out and I have two inputs on the amp. I can't bridge the amp at 2 ohms.

    Sounds like I need to rewire. I just don't know how to do it.

  9. #9
    Forum Member Wilko's Avatar
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    Re: Another 'how do I do this'?

    What type of output is on the mixer?

    Radio shack may have what you need. Just a simple "Y" cord will work.

    Your amp is a breeze to bridge into 1200 watts @ 8 ohms if you have bare wire or banana connectors.

  10. #10
    Forum Member CyberStrat's Avatar
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    Re: Another 'how do I do this'?

    The output from the EQ is XLR. Amp input is XLR or Banana. There is also a switch for the bridge mode, but the amp can't handle the 2 ohm load.

    So if I split the signal there will be loss? and I won't get as much volume as with one signal?

  11. #11
    Forum Member Wilko's Avatar
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    Re: Another 'how do I do this'?

    You have a signal loss. You might have enough headroom on your knobs to make up the difference.

    What do really have available for a mixer rig? I could help you with options for setup knowing what's available. For one thing, you mention the "EQ" has only XLR out... why are you going from EQ to amp?

  12. #12
    Forum Member CyberStrat's Avatar
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    Re: Another 'how do I do this'?

    Wilko - sent you a email

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