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Aux Fed Subs Using DRPA

rockitboyrockitboy Posts: 10
edited February 2010 in PA General Discussion
Hello,

I am using a DriveRack PA and am running a mono mix to the FOH. Since I'm
mono, I am only feeding the left side of the DRPA. I come out of the left high
output into a JBL MPX1200 amp and then to 2 passively crossed high
cabinets. I'm crossing at 100Hz as that is the recommendation of the high
cabinet manufacturer. I am coming out of the left low output into a Crown
MA3600 and then to 2 JBL SR4718's or SR4719's depending on the venue. Since
I'm not using the right side of the DRPA, I am wanting to use an aux send from
the board into the right input then out of the right low output to the low amp.
So I would basically be feeding the high cabinets from the left side of the
DRPA and the low cabinets from the right side of the DRPA. I can't think of
a reason that this wouldn't work. I asked the question on a ProSoundWeb
forum and had mixed answers. One guy said that he has used the DRPA this
way and has not had a problem. Another guy said that since the 2 sides of
the DRPA are stereo linked, that they would interact and cause problems.
Also, I don't use the feedback eliminator, compressors or limiters in this unit.
All I'm using is the crossover and graphic EQ. I thought I should probably ask
the people who make this unit to get the correct answer. Can I use the DRPA
this way without problems ?
Thanx for your time.
Don Ullstrom
rockitboy@msn.com

Comments

  • DraDra Posts: 3,777
    viewtopic.php?f=60&t=2228&p=12126&hilit=aux+fed#p12126

    This FAQ post will give you an idea. It is a lengthy article and lays out a "concept" that you can alter to suit your needs (there is a blurb at the end).

    DRA
  • GadgetGadget Posts: 4,915
    The guys that say it can't be done @ PSW are wrong but lets clear something up right here:
    I thought I should probably ask
    the people who make this unit to get the correct answer.
    We are NOT the ones who created this hardware, were USERS just like you. This is a USER site, That said, the DRPA has separate paths, it has "modules" that are tied together, but you will get independent GEQ's (complete with independent auto eq) and peq's. remember that you for the tops you have 3 bands to work with so you can have mono bi-amp tops and mono subs and they can be independent with 2 PEQ's each output, but whatever you set the xovers to must be used by the whole system...

    So, if you want fullrange tops and subs on separate inputs you need to set up a 2X4 with the tops set up on the left in and use the left hi outs, and the aux feed to the right input goes to the right low out.

    For Bi-amp tops, it's 2X6 with left input for the tops, with the left hi, and mid used for the tops, and the right low out to the subs.

    You will need to set up the HPF and LPF after you save the config.

    We have compiled a wealth of info to help optimize the driverack experience here, please feel free to read, ask questions and contribute, if you wish. There is no bashing or flaming here and the only dumb question is the one you don't ask...
    Gadget
    Moderator
  • DraDra Posts: 3,777
    Gadget wrote:
    and the only dumb question is the one you don't ask...
    Just dont ask about Sturgis 1987. :mrgreen:

    DRA
  • DennisDennis Posts: 801
    Dra wrote:
    Just dont ask about Sturgis 1987. :mrgreen: DRA
    What about Sturgis 1987??
  • DraDra Posts: 3,777
    I SAID, "DON'T ASK!". :lol:
  • DennisDennis Posts: 801
    Dra wrote:
    I SAID, "DON'T ASK!". :lol:

    I wouldn't have asked if you hadn't brought it up.
  • GadgetGadget Posts: 4,915
    1+
    What about Sturgis 1987??
    Inquiring minds and all...
  • DraDra Posts: 3,777
    Dennis, it's not me. Gadget swore me to secrecy. If he wants you to know he'll have to tell you himself. :mrgreen:

    DRA

    Sorry G, I shouldn'ta bought it up. :lol::lol: :P
  • GadgetGadget Posts: 4,915
    Hmmm...never even been to Sturgis :roll: never really wanted to GO to Sturgis :roll: :roll: Are you sure this didn't happen in your OTHER life Dra? :lol:
  • DraDra Posts: 3,777
    Your right... it never happened. :roll: Does the name Shaliqua and dwarf tossing ring a bell? :mrgreen::mrgreen::mrgreen::mrgreen::mrgreen::wink:
  • GadgetGadget Posts: 4,915
    Oh THAT trip to Sturgis

    But remember when we got to your house you were so hung over that you wouldn't even open the door! Instead you 5.gif us and told us to go throw some dwarfs.. it wasn't MY fault that you didn't remember that Shaliqua was behind you at the time...and the REAL question here is who tossed WHOM? emot71.gif
  • DraDra Posts: 3,777
    You're mistaken. It was you, Shaliqua, and Gadgit.
    Right after that was when Gadgit found out about you and Shaliqua, and put all your stuff in a box to the left, to the left, to the left. Gadgit put everything you own in a box to the left.

    Whew! That was fun! Been a while.

    DRA
  • GadgetGadget Posts: 4,915
    And where's GADGIT when you don't need him :roll:
  • DennisDennis Posts: 801
    I'm sorry I asked.
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