Extension Cabs

Discussion in 'Amps and Cabs [BG]' started by JJThunder, Feb 19, 2013.

  1. JJThunder


    Jan 8, 2012
    Hi Tb :). Need some help and advice regarding running and extension cab off of a Combo amp. (I apologize in advance for my terrible electronics knowledge)

    The Amp i currently use is a Hartke 210C (Not the 5210 with the LH Series head built into it). The guitarist in my band has gone and got himself a Marshall cab and head and our gigs are starting to get bigger so i need to size up too.

    The head has one output and underneath it says a minimum of 4 ohm. So im presuming that if i was to buy an 8ohm Hydrive 410 to use as an extension, the head would work in the combo driving the cabinet like a standard head and cab. Or if the combo speaker set was 8ohm, i could buy a splitter, wire them in parallel therefore the output is 4ohms and i have a 6x10 rig? Or is this incorrect?
  2. If the combo speaker is in fact 8 ohms you could daisy chain another 8 ohm cab to it and have a 4 ohm setup. If the combo speaker is 4 ohms you could just buy a bigger 4 ohm cab to be powered alone by the amp when the need arises.
  3. MontanaBassDude


    Sep 20, 2011
    You're correct; that's incorrect.

    If I'm reading your questions right --Your two 10s = 4 ohms, and that's all your head will handle. You could get a 4x10 cab (8 ohms) or two 4x10s (another 8 ohms) and you'd be good at 4 ohms. But then you're carrying around a 60 pound combo with two unusable speakers.

    Splitter, wire in parallel? - forget it. Doesn't work that way.
  4. coyote1


    Mar 23, 2012
    The 210c is a great amp.

    Any good 4x10, 8 ohm cab would be a great addition and that amp would easily keep up. A Hydrive cab would be awesome.

    EDIT: oops. I was thinking about the combos with the LH500 amp. Ignore the above.
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  6. Jazzdogg

    Jazzdogg Less barking, more wagging!

    Jul 29, 2006
    San Diego, CA
    If your combo's amp is limited to a 4-Ohm load, and the internal 2x10 speakers present a 4-Ohm load, you will not be able to ADD a second cabinet unless it is connected in SERIES with your 2x10 OR you use the second cab INSTEAD OF the built-in 2x10.
  7. basscooker

    basscooker Commercial User

    Apr 11, 2010
    cincy ky
    Owner, Chopshopamps.com
    i'm not sure what exactly they mean about the 4 ohm minimum. since the amp already has speakers, and the connector they have built into it says 4 ohm minimum, then either connecting a cab to it will disconnect the combo's speakers or the amp will run at 2 ohms. your question would be easier to answer if you clarify which.
  8. According to the manual, the speakers in the combo are 4 ohms and it can accomodate a 4 ohm load of external speakers according to the label on the back. At least, that's how I read it. That would make a minimum load of 2 ohms on the amp and that would make sense.

    FWIW, the manual says, "The jack is used to connect the internal 4-ohm Hydrive hybrid cone bass speaker system" and that's all.

    Hartke has a toll-free tech support line so you might want to give them a call to clarify this.
  9. JJThunder


    Jan 8, 2012

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