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ohm question

Discussion in 'Amps and Cabs [BG]' started by sixstringbass, Dec 23, 2005.


  1. sorry if this has already been asked but I have a bass cab gk backline 4x10 8 ohm at 400 watts I have a peavey bass head from the 70s 130 watts at 4 0hms so what am i running my cab on if it is 130 at 4 ohms on a 400 watt 8 ohm cab? im new to this stuff and wanted to know if this made a difference in the output of the cab or from the head. thanks :help:
     
  2. Your cab presents an 8 ohm load to the amplifier. The cabinet can handle 400 watts of power, if it were hooked up to an amp that could deliver 400 watts of power into an 8 ohm load.

    If your amp can produce 130 watts into a 4 ohm load, and I assume this is a transistor (solid-state, not tube) amp, it will probably produce about 80 to 90 watts into an 8 ohm load. So your rig is putting out 80 to 90 watts.

    Look at the sticky at the top of these threads, under the FAQ there is a section on "ohms". This will help explain what an ohm is (a unit of electrical resistance) and how it relates to amps and power output.
     
  3. thanks a lot Ill look at the faq
     
  4. HMZ

    HMZ Supporting Member

    Dec 21, 2003
    USA-Mineola
    If I run 3 eight ohm cabs in parallel what is my final ohm load?
     
  5. Maverick Blues

    Maverick Blues Being a Thumper is all about ATTITUDE!

    Apr 28, 2005
    Richmond, VA
    1/(1/8 + 1/8 + 1/8)=2.666... ohms.

    'rick
     
  6. petch

    petch Supporting Member

    Mar 25, 2001
    Medina, Ohio
    Ohms should have a number in front of it; otherwise the word is impedance.
     
  7. HMZ

    HMZ Supporting Member

    Dec 21, 2003
    USA-Mineola
    Thanks for the help guys.