1. Please take 30 seconds to register your free account to remove most ads, post topics, make friends, earn reward points at our store, and more!  
     
    TalkBass.com has been uniting the low end since 1998.  Join us! :)

Two 8ohm cabs = 4 ohms, buuuut...

Discussion in 'Amps and Cabs [BG]' started by indykrap, Apr 23, 2006.


  1. indykrap

    indykrap

    Nov 6, 2004
    I understand that when you run a 4ohm head out to two 8ohm cabs, the net load is 4ohms, but does that mean you get the power of the cab (at four ohms) out of it?

    Example: I have a GK backline head, which does 175 watts at 4ohms and 115 at 8. I'm running it into my Fender Bassman 410, which is an 8ohm cabinet. I understand that I'm only getting 115 watts into the BM. Now, if I get another 8ohm cab (like, a 1x12 or something), and run the GK into that as well, do i get 175w into each cab?

    yes, i tried searching and the FAQ, but it didnt help too much.
     
  2. Basshole

    Basshole Banned

    Jan 28, 2005
    No, you get 87.5 to each for 175 total from the amp.
     
  3. Ostinato

    Ostinato Guest

    Feb 7, 2005
    Toronto ON
    Two 8 ohm cabs into a mono amp will give you the amps full rating at 4 ohms.
     
  4. emblymouse

    emblymouse Supporting Member

    Jan 22, 2006
    W'Sconsin
    Lakland Artist Endorser
    Ok, how about and 8 ohm cab w/ a 4 ohm cab? Not quite 2 ohms?
     
  5. Plain Old Me

    Plain Old Me

    Dec 14, 2004
    2.67
     
  6. emblymouse

    emblymouse Supporting Member

    Jan 22, 2006
    W'Sconsin
    Lakland Artist Endorser
    Thanks, I've always wondered. I guess I'm smarter than I thunk.
     
  7. Petebass

    Petebass

    Dec 22, 2002
    QLD Australia
    Yes but don't forget the 4 ohm cab will draw twice as much power as the 8 ohm cab. Potentially, one cab cound drown out the other.
     
  8. Also, your amp may not be rated to run at 2.67 ohms.
     
  9. yup, important point there, the 4ohm cab will get 2/3rds of the power the 8ohm cab will get 1/3rd
     

Share This Page