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SWR son of bertha 8 to 4 ohm speaker...

Discussion in 'Amps and Cabs [BG]' started by yobtaf, May 30, 2019.

  1. May 30, 2019 #1
    yobtaf

    yobtaf

    Nov 29, 2012
    SoCal
    I was looking at putting a 4 ohm speaker into my SOB cab that has blown 8 ohm speaker. I was looking at eminence kappalite 3015. Would this work? Or is cab designed for 8 ohm speaker. Very newbie on this kinda stuff.
    TIA
    Dean
     
  2. May 30, 2019 #2
    Rick James

    Rick James Inactive

    Feb 24, 2007
    New Jersey
    Why 4 ohms? If it's 'to get all the watts out of my amp', don't. Cabs aren't designed to work with a specific impedance, they are designed to work with the Thiele/Small specs.
     
  3. May 30, 2019 #3
    yobtaf

    yobtaf

    Nov 29, 2012
    SoCal
    yeah thats kinda it. I have 2 of them, would sell the 8 ohm one. this way I could use my svt with it at home and such. stupid idea?
     
  4. May 30, 2019 #4
    okcrum

    okcrum in your chest

    Oct 5, 2009
    Verde Valley, AZ
    RIP Dark Horse strings
    No, it won't work, unless you disconnect the horn and crossover (which are also designed to be 8 ohms). Running a single 8 ohm SOB at home isn't going to hurt your SVT.
     
    yobtaf likes this.
  5. May 30, 2019 #5
    gregmon79

    gregmon79 Supporting Member

    Dec 20, 2012
    Chicago IL
    Yeah, it's a lot more complicated than simply swapping out woofers.
     
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  6. May 30, 2019 #6
    yobtaf

    yobtaf

    Nov 29, 2012
    SoCal
    im new to the svt head world. Ive read so many places its bad to run at 8 ohms. heck I read so many conflicting things just on hooking up two 8 ohms speaker cabs. some say daisy chain is only way, others say you can run one cable from each output jack into each cab. Thanks obama hahaha
     
  7. May 30, 2019 #7
    okcrum

    okcrum in your chest

    Oct 5, 2009
    Verde Valley, AZ
    RIP Dark Horse strings
    Yeah, don't sweat running the SVT 4 ohm tap to a single SOB. For starts, you won't be able to get it loud enough inside a room playing alone to hurt anything, before everything else starts rattling. You'll get reduced power, but that's not a concern here. The power tubes won't wear out any faster. I ran a single 8 ohm 15 on a lot of trio bar gigs when I was in my SVT honeymoon. You can get into trouble at doom levels of loud on a gig with that mismatch - that's the caution zone.
     
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  8. May 30, 2019 #8
    BassmanPaul

    BassmanPaul Inactive

    Aug 25, 2007
    Scarborough Ontario Canada
    The difference in volume between a 4Ω and an 8Ω driver is hardly noticeable. Do yourself a favour and leave the cabinet as 8Ω. You’ll be then able to add another 8Ω box for more volume.
     
    yobtaf likes this.
  9. May 30, 2019 #9
    deff

    deff

    Oct 15, 2018
    Gloucester, MA
    You can run them either way. No running 8 ohms impedance isn't bad at all.