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Tube Amp Question

Discussion in 'Amps and Cabs [BG]' started by billhilly66, Oct 9, 2010.


  1. billhilly66

    billhilly66

    Aug 25, 2007
    Plano, TX
    So, What happens if you run a 4 ohm load with the speaker cable plugged into the 8 ohm output jack?

    I hooked up my 400+ that way last night at the gig as I'm used to running just one 8 ohm cab. I got a second cab but spaced out plugging into the 4 ohm jack.
     
  2. tony_clifton

    tony_clifton

    Nov 14, 2009
    You can better short-circuit a tube amps outputs (impedance = 0 ohm) than to run it without a load (impedance = infinite).

    Best thing is to match amplifier and cabs obviously, but between the two evils you did the least harmful for your amp, so don't worry.
     
  3. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

     
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