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4ohm cab with 8ohm head

Discussion in 'Amps and Cabs [BG]' started by kickinbass, Dec 8, 2006.


  1. kickinbass

    kickinbass

    Nov 19, 2004
    ontario canada
    Hey, just wondering what the pros and cons are , I'm using a 8ohm Behringer 3000T head and a yorkville 15" 8 ohm cab could i use a 4ohm 2X10 cab also. let me know before i make a mistake and buy a 4ohm cab. thanks
     
  2. Foamy

    Foamy

    Jun 26, 2006
    Sac Area
    If the lowest the head goes is 8 Ohms, you cannot add another 4 ohm cabinet in parallel without damaging the head. I suppose you could wire it in series, but you'd be going in the opposite direction of what you're trying to do.

    Exactly which head are you talking about? Is it this one? http://www.behringer.com/BX3000T/index.cfm?lang=ENG
    If so, the spec sheet says it gets 300W at a minimum load of 4 Ohms, so you should be OK adding another 8 Ohm cab, but not the 4 Ohm version. 2 8 Ohms in parallel are 4 Ohms, the minimum for your amp (if it's the one above).
     
  3. kickinbass

    kickinbass

    Nov 19, 2004
    ontario canada
    That's the one above and i kind of figured i couldn't go with a 4 ohm cab with my Yorkie 15" 8 ohm. Any suggestions on a 300 watt 8ohm 2X10 cab. Something that will match up to my Behringer Ultrabass BX3000T head and Yorkville 115B cab, also I don't play live alot about once a month so i don't want to break the bank also. thanks.
     
  4. Foamy

    Foamy

    Jun 26, 2006
    Sac Area
    There's a lot of opinion on that topic - which cab....
    I like my Avatar, and they are VERY reasonably priced. You can get a B210 Neo for a good price. Used, I've seen them go for under $200. But make sure you get the 8 Ohm version as they come in 4 or 8.
    But I am confused....you mention "...my Behringer Ultrabass BX3000T...". That's exactly the one I have in the link above. Double-check your head. Look at the output connector on the back. Does it say 8 Ohm minimum?
    http://www.behringer.com/02_products/proddetail.cfm?lang=ENG&id=BX3000T&type=210
    If you have the BX3000T, it should be like this photo, and can do 4 Ohms.
     
  5. kickinbass

    kickinbass

    Nov 19, 2004
    ontario canada
    It is exactly like that but if i go with a 8 ohm 15" cab and a 4ohm 2X10 cab doesn't that lower the ohm rating under 4 ohms.
    if 8 +8 =4 doesn't 8 + 4 = less than 4 ohms and this will harm the head. The head is rated at 8ohm with a 4 ohm mininium. Or am i just confused that a 4ohm and a 8ohm cab will work. thanks again
     
  6. KeithPas

    KeithPas Supporting Member

    May 16, 2000
    Poulsbo,Wa
    I have a similar situation in that I have a head that operates at 4ohmns and two cabinets; one 4ohmn and one 8 ohmn. Is there any way to rewire a 4 ohmn 2/10 cabinet to 8 ohmns?
     
  7. Foamy

    Foamy

    Jun 26, 2006
    Sac Area
    You'll need another 8 Ohm cab. You said to stop you before you buy a 4 Ohm cab. I said to not buy a 4 Ohm, you need to get the 8 Ohm version.
     
  8. No. You could rewire to 16Ω, wiring the 2 speakers in series.
     
  9. KeithPas

    KeithPas Supporting Member

    May 16, 2000
    Poulsbo,Wa
    I have seen several 8 ohmn 2/10 cabinets. Do they use two 16 ohmn speakers to be able to do this? If so, where would be the best place to look for 16 ohmn 10" speakers?
    Thanks
     
  10. Gintaras

    Gintaras

    Dec 11, 2004
    Kent Island, Md.
     

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