New PA Gear, How the hell do i use it

Discussion in 'Location Recording' started by Musikalmonk, Jul 20, 2009.

  1. Musikalmonk

    Musikalmonk Guest

    Hey how u doin, I'm new here. I've been playing regurly in a 3 piece with a Yamaha mx something and 2 2x15 500 watt FOH.and using an old jade thing to power my FB's. Recently I went to an auction and scored a phonic helix 18 firewire mixer, 3 power amps aCrown CE-2000, a Quest QA-3000, and a star sa-12. And the speakers I got well I'm not really sure what they are but there's 2 1x15 Basic speakers(not sure how the tweeters go), 2 18"subs which i dont know, and 2 quest subs(I dont know what they r i looked all over the net. they have six holes in the front.) I was just wondering if anyone here could tell me what i need to use this in a live situation. I've used the Crown with the basic speakers from the mains. with the Foldbacks coming from the aux 1, to our old Yamaha emx(I think its called). But I want to know how to hook the subs up.If any one could help me it'd be awesome thanks.
    peace out :)
  2. Boswell

    Boswell Moderator Distinguished Member

    You need to connect the subs to one power amp and the mid/tops to a second stereo power amp, using a crossover unit to split the audio frequencies at the input of the power amps. Often, the subs are driven in mono, in which case, the crossover box sums the sub outputs of the L and R channels. Connect the main L+R outputs of your mixer to the input of the crossover unit.

    At the power levels available from those Quests, don't be tempted to use passive crossovers at the output of the power amps - they will explode.

    You don't appear to name a crossover unit in the list of gear you are now the proud owner of, so you may have to go to another auction to get one.

    I picked up an old C-Audio active crossover for next to nothing (it didn't work originally - needed a new mains transformer), which now works well for me for exactly the function you need, but there are many makes and models to choose from. The other approach is to go for an active PA speaker management unit such as something from the DBX DriveRack range.
  3. Davedog

    Davedog Distinguished Member

    You also need to post this is the right area.
  4. moonbaby

    moonbaby Mmmmmm Well-Known Member

    Boswell: "At the power levels available from those Quests, don't be tempted to use passive crossovers at the output of the power amps - they will explode. "

    Sometimes a bit of pyrotechnics is just what a live show needs...
  5. Musikalmonk

    Musikalmonk Guest

    How abou a Behringer super X pro CX2310 - crossover will that do?
  6. Codemonkey

    Codemonkey Well-Known Member

    If you want gear which is more likely to be defective than similar units from other manufacturers, which is inferior in build quality, audio quality, and probably looks to those units?

    Then yes.
  7. moonbaby

    moonbaby Mmmmmm Well-Known Member

    Nah, stay away from the cheap junk. For about the same price, get on e-Bay and find an Ashly Audio active crossover used, much better build quality and be happy!
  8. Musikalmonk

    Musikalmonk Guest

    lol k sweet thanks guys

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