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PA System

Discussion in 'Miscellaneous [BG]' started by jonasp, Jul 9, 2003.

  1. Jul 9, 2003 #1
    jonasp

    jonasp

    Aug 7, 2002
    Duluth, Minnesota
    Ok. We have a Kustom 4 channel 60w PA system. We have 2 cabs, each 8 ohms. My guitarist says that we DO NOT need a power amp for monitors. He says we can daisy chain the speakers and we'll have monitors. I said, no...that will change the impadence of the load and could damage our mixer/head. he insists that we dont need a power amp and can daisy chain.

    Who is right? And, daisy chaining is brining a line from the mixer to the speaker in, then from the same speaker brining another line from the out to another speaker's in. Right? hope this made sense.

    Mixer---Speaker 1's in---speaker 1's out---speaker 2's in
     
  2. Jul 10, 2003 #2
    Munjibunga

    Munjibunga Retired Member

    May 6, 2000
    San Diego (when not at Groom Lake)
    Independent Contractor to Bass San Diego
    With just your two 8-ohm cabs, you're putting a 4-ohm load on the amp. My guess is that 4 ohms is the minimum recommended for that head. If you add two more 8-ohm speakers as monitors, your load drops to two ohms. Unless your amp is designed for two ohms, that'll pretty much do it in.

    I believe you are correct, so kick your guitarist in a painful place, and tell him to shut up or die.
     
  3. Jul 10, 2003 #3
    BIg O

    BIg O

    Apr 3, 2002
    Kitchener, ON, Canada
    This is always good advice.

    Don't daisy-chain more than 2 8-ohm cabs with that setup, like Munji says. Does the PA have a line or monitor out? If yes, I would get a powered monitor (or 2) as the optimal solution. :)
     
  4. Jul 10, 2003 #4
    jonasp

    jonasp

    Aug 7, 2002
    Duluth, Minnesota
    I don;t belive there is a Line Out. So, thanks you guys very much!
     
  5. Jul 10, 2003 #5
    jonasp

    jonasp

    Aug 7, 2002
    Duluth, Minnesota
    Sorry guys, I lied. The PA does have a line out. So, we could get a powered monitor. But, what is a powered monitor? how many could we get, maybe 2 8ohm powered monitors to keep the load at 4ohms?

    So, does the line out not change the load going to the head?

    Thanks, Pete
     
  6. Jul 10, 2003 #6
    embellisher

    embellisher Holy Ghost filled Bass Player Supporting Member

    Apr 18, 2000
    Heber Springs, Arkansas
    Using a line output puts no load on the power amp.

    A powered monitor is a monitor with a power amp built in. You could hook up as many powered monitors as you want, since they put no load on the amp.
     
  7. Jul 10, 2003 #7
    jonasp

    jonasp

    Aug 7, 2002
    Duluth, Minnesota
    Oooh...cool. Thanks a lot. Then we would just put the line coming from the line out in the line in on the powered monitor? right?
     
  8. Jul 11, 2003 #8
    embellisher

    embellisher Holy Ghost filled Bass Player Supporting Member

    Apr 18, 2000
    Heber Springs, Arkansas
    Yes. Connect the line out on the mixer to the line in on the powered monitor. Make sure you use a decent quality shielded cable.