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How would you run these cabs?

Discussion in 'Amps and Cabs [BG]' started by sean_w_mcgrath, Dec 23, 2004.

  1. sean_w_mcgrath

    sean_w_mcgrath does this forum name make me look fat?

    Ok so here is what I have to work with:

    GK 800RB: 100 watt amp with 1 output (8 ohm minimum)
    300 watt amp with 2 outputs (8 ohms each, 4 ohm total minimum)

    2 x Aguilar GS112: 300 watts @ 8 ohms

    So my question is, how would you hook these up? Is there any real advantage of running them in series vs parallel? I guess the thing that really messes me up is the "4 ohm total minimum" for the two out puts of the 300watt section of my head.

    Any help would be appreciated. Thanks

  2. Jack


    Sep 6, 2003
    Newcastle, UK
    Put each cab in one output. Or put one cab in one output and daisy chain the second cab from the first. Either way, youll get 300W @ 4ohms.

    Im worried why you give two rating though. if the 100W rating is for the GK's high amp (something like that) then it wont work with your Aggie cabs.
  3. sean_w_mcgrath

    sean_w_mcgrath does this forum name make me look fat?

    Here is some info, taken from the 800RB's manual:

    The "Low-Amp" puts out:
    8 ohms - 200 watts
    4 ohms - 300 watts

    So this tells me i should run the cabs in parallel from the 300 watt amp in order to get the full 300 watts. Is this correct?
  4. Jack


    Sep 6, 2003
    Newcastle, UK
    Yes. :D
  5. NicJimBass

    NicJimBass Flossin'? I thought your name was Munson! Supporting Member

    Nov 22, 2004
    Lancaster, OH
    64 Audio · DR Strings · Source Audio · Hipshot
    I don't really understand haow to use it on the 800RB, but most GK heads have bi-amp ability. The 100w amp is for highs, the 300w amp is for lows. Maybe early GK cabs had seperate inputs for highs and lows? If you are really adventurous, you could probably modify your Aggies so that the woofers and tweeters are on separate inputs, and then run the amp to the corresponding jacks. I don't know if this would mess with the impedance (I imagine it would), but if you want a bi-amp sound, that's one way to go about it. Otherwise, just use the 300w output, and you'll be good to go.

    P.S.- I owned an SWR Triad that I ran with a GK700RB... I modified the cab to accept the bi-amp signal. It was pretty easy, and slightly improved the sound, but it wasn't a HUGE difference.
  6. IvanMike

    IvanMike Player Characters fear me... Supporting Member

    Nov 10, 2002
    Middletown CT, USA
    just plug the two cabs into the outlets of the 300 watt 4 ohm output. I hate those stupid bi amp GK heads.

    read this