amp head/cab ohm load

Discussion in 'Amps and Cabs [BG]' started by rylie, Jun 14, 2019.

  1. rylie


    Sep 25, 2017
    somewhere stable
    I know this question has been asked before...

    what is the final watt output if a 4 ohm/500 watt head is paired with a 8 ohm cab?
  2. Stumbo

    Stumbo Guest

    Feb 11, 2008
    Which head?

    Around 300 or so.
  3. Wasnex


    Dec 25, 2011
    Each amp is different, so there is no generic answer. @Stumbo 's response is a good estimate though.
    Stumbo likes this.
  4. Jim Carr

    Jim Carr Dr. Jim

    Jan 21, 2006
    Denton, TX or Kailua, HI
    fEARful Kool-Aid dispensing liberal academic card-carrying union member Musicians Local 72-147
    Less than 300 watts, but so? The potential volume difference between 500 and 300 watts, assuming all else is held constant, is much less than you might think. To be twice as loud as 250 watts, you need 2500 watts converted to "loudness."
  5. chris_b


    Jun 2, 2007
    What does the user manual say?

    8 ohms is about 50% of the 4 ohm figure.
  6. There is no safety in numbers. Use your ears. Wear earplugs. Keep turning up until it does not get louder. At that point you are giving your speaker(s) death. Turn down and never turn up that far again.

    By reducing the amount of lows in your sound you can turn up louder. It may be that they get to sounding quieter. Turn off before you smell them dying.