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First Rack Head - A little help needed

Discussion in 'Amps and Cabs [BG]' started by deanthemachine, Dec 12, 2006.

  1. deanthemachine


    May 3, 2005
    Hey guys, just snagged a svt2p preamp and planning on pairing it up with a QSC-RMX 850. Just have a few quick questions:

    -Is the power amp ok to run through my current cabs, which are ampeg classics 115 and 410HE. (im pretty sure there rated at 250-500 and 500-1000)

    -Im not quite sure what the difference is between running the cabs stereo and mono, is it simply that the sterro is running both cabs to seperate connections at the amp, and mono running one to the amp and the other to that cabinet? Which is better/more effiecent?

    -When connecting a pre to the power amp, is standard speaker cable ok?

    Thanks alot guys.
  2. Lowtonejoe

    Lowtonejoe Supporting Member

    Jul 3, 2004
    Pasco, WA
    Yep, it will do fine but if the cabs are 4 ohm you will need to run in stereo instead of bridged mono. The amp is only rated to 4 ohms in bridged mono but to 2 ohms in stereo.

    I am not sure what power ratings you are quoting on the cabs. Chances are they will be able to take more power than the RMX850 will put out but it will still be a very loud setup.

    Stereo you have a left and right channel. Bridged mono you have a mono out just like a regular head. A third option for you is dual mono. The amps (there are two amps in a single stereo amp) will share a common input and still be able to go down to 2 ohms but they will not be bridged.

    No, use a sheilded cable like a short guitar cord. Speaker cables are for connecting the speaker to the power amp.

    Yer welcome.

    Any more question?


  3. deanthemachine


    May 3, 2005

    Wow, very fast reply and all covered thanks!:bassist:

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