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how to use a B 5r at its full output power

Discussion in 'Amps and Cabs [BG]' started by lo lio, Jun 18, 2003.


  1. lo lio

    lo lio

    Apr 10, 2003
    FRANCE 78930
    My b5r runs at
    - 200 RMS poweroutput at 8 ohms
    - 350 RMS poweroutput at 4 ohms
    - 500 RMS poweroutput at 2 ohms
    and it's got two 1/4 jacks to connecting cabs and a speakon output jack.
    I connect it with a BSE 410 Hlf with 400 watts at 4 ohms.
    First question : When i connect them with a single 1/4 jack what is the power ?
    Second question : Can i connect them with 2 1/4 jack ? If i can, what is the power ?
    I'm thinking of buying a second cab a BSE 115 with 200 watts at 8 ohms.
    Third question : Is it possible to connect this amp with this 2 cabs together to have 500 watts (at 2 ohms).
    Thanks. And if it's not clear ask info.
     
  2. Tightanic

    Tightanic Supporting Member

    Oct 26, 2000
    NYC
    Hello,
    you can connect the second output of your head, but never to the same cab :eek:! Normally, these 2 jacks on your head are wired in parallel, as well as those of your cab. This way, adding another cabinet can be done by connecting it to the 2nd output jack of your head, or by connecting it to the cab's second jack. Alright?:)

    Johannes
     
  3. By them I assume you mean the BSE 410 and the BSE 115:confused: It makes no difference if you go AMP -> BSE 410 -> BSE 115. or AMP-> BSE 410, AMP => BSE 115, it's still 2.66 ohms and more than 350 but less than 500.


    With this config. you are pushing roughly 2.66 ohms. I don't know the exact formula for determining what your power output would be but I can say with certainty that it will be more than 350 but less than 500.
    No. You can't get 2 ohms from a 4 & 8 ohm cab no matter how you wire it. The only combination you can achieve is 2.66 or 12. Hope this helps
     
  4. DWBass

    DWBass The Funkfather

    2 4ohm cabs should do it!
     
  5. Tightanic

    Tightanic Supporting Member

    Oct 26, 2000
    NYC
    Alright, my fault. Perhaps reading through all of the question would have helped to write a more accurate answer! :rolleyes:

    Johannes
     
  6. lo lio

    lo lio

    Apr 10, 2003
    FRANCE 78930
    Thanks. So if i want to run at 500 watt i need a second 4 ohms cab connecting in parallel or in daisy chain (?) No ?
     
  7. Tightanic

    Tightanic Supporting Member

    Oct 26, 2000
    NYC
    Yes, that's right. But personally I wouldn't be too shy connecting another 8 ohm cab, especially with a 15" speaker. Of course some more power would go to the 4 ohms, but the difference in volume wouldn't be too great.

    Johannes