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1x12 + 1x12 + 1x15 is it doable?

Discussion in 'Amps and Cabs [BG]' started by DionClassic, Mar 28, 2015.

  1. DionClassic


    Feb 15, 2012
    hey guys. I had the opportunity to trade my least used bass for 2 Traynor TC112 neo cabs. They are both 8 ohm cabs.

    I currently own a 115 neo With a Faital 400 pro 4 ohm speaker.

    If I ran all three together would it work? I have a mesa big block 750. Obviously sound would come out but... do 12s and 15s mix ok?

    also is there a way to make it so I'm plugging it in as a 4 ohm 212 + a 4 ohm 115...

    I would most likely run the 112s together and that's it. But it's nice to know I can have a big rig for outdoor gigs... But only if it sounds decent of course.
  2. cfsporn


    Aug 20, 2011
    New York City
    If by work, you mean get sound out of it, then yes. At least if each of your 112s are 8Ω.

    If by work, you mean sounds good all over the stage and audience area while not risking blowing out one of the speakers, I can't say for sure either way but probably not.
  3. As long as you don't the power imbalance of your 15 getting 1/2 your power, while each 12 gets 1/4.
  4. iualum


    Apr 9, 2004
    Yes. It could be super. Do it :thumbsup:.
    DionClassic likes this.
  5. middy


    Mar 14, 2007
    If you plug all the speakers in parallel, that's the same as 1 4 ohm 2x12 and 1 4 ohm 1x15.
    The 115 will get half of the 750 watts and the 2 112s will share the other half. This is not quite ideal because the 2 112s combined have about a 25% greater surface area than the 115, but it should work fine if the drivers are all in phase.
  6. High Camp

    High Camp

    Oct 3, 2013
    Maybe obvious, but this is what I would do:
    connect the two 112's in parallel in one speaker output, the 115 in the other speaker output.
    Presuming the head is 750 watts, then the two 112's will get a max of 375 watts, which is no problem at all.
    The 115 cab is 400 watts, so be careful when cranking the gain/volume.

    EDIT: I overlooked the "Faital pro 400" bit >> there's no problem at all with cranking the gain!
    Fatboy 2015 and DionClassic like this.
  7. Mystic Michael

    Mystic Michael Hip No Ties

    Apr 1, 2004
    New York, NY
    The Mesa Big Block is designed to run optimally at 2 ohm, so yes, this configuration would work fine from an impedance standpoint. You would probably connect the 1x15 straight from the amp, run one 1x12 directly from the amp, then daisy-chain (i.e. connect from another cab) your other 1x12 from either the 1x15 or the first 1x12.

    This is a question that is impossible to answer in the abstract - because there is no standard set of characteristics that universally apply to 1x12s or to 1x15s. If you want to try it, you're going to have to make a personal assessment, of these particular, individual makes/models, in terms of tone, frequency response, dispersion, and all the other factors you might normally use.

  8. -Asdfgh-


    Apr 13, 2010
    If your amp doesn't do a 2 ohm load you'd have to do some crazy rewiring and have two 1x12 in parallel, in series with the 1x15. It's probably not worth the effort. Most amps won't work safely with a 2 ohm load.
  9. DionClassic


    Feb 15, 2012
    Big block does 375 into 8 ohm, 550 into 4 ohm and 750 into 2 ohm. But so far the info is really helpful!
    Last edited: Mar 28, 2015
  10. Eminor3rd

    Eminor3rd BLAAAAARRGGHH!!

    Feb 10, 2008
    Even if you can match impedances, mixing speaker sizes generally doesn't work out well sonically. They're all designed to be full-range cabinets and make different concessions to reach that goal -- there's no reason to believe that those characteristics will be complementary. Further, each speaker will receive a different amount of power relative to how much it was designed to need.

    When adding cabs, you're always better off matching things as closely as possible, IME.
  11. DionClassic


    Feb 15, 2012
    Thanks for the input. I guess it's a gamble
  12. DionClassic


    Feb 15, 2012
    Ended up grabbing the 112s. they are plenty loud. Probably wouldn't need the 115 so maybe I'll just sell it.

    These things are crazy light... 25lbs each.

    I only wish they were a bit wider to fit my head better...

    Attached Files:

  13. iualum


    Apr 9, 2004
    DionClassic likes this.
  14. Ric5

    Ric5 Supporting Member Commercial User

    Jan 29, 2008
    I grow organic carrots and they are not for sale
    1x12 + 1x12 + 1x15 is it doable?

    Use more than one bass head and daisy chain them.
  15. High Camp

    High Camp

    Oct 3, 2013
    I'm not sure I can see the benefit of using two heads over one 750 watt head that can handle a 2 ohm load.
  16. Fatboy 2015

    Fatboy 2015

    Mar 13, 2015
    sorry if this is an annoyance, but I'm new to all this. I have been planning on buying a fender rumble 500, leaning toward the combo, for a starting point, or a head with the 210 box, the head seems more versitile, but also more expensive.
    Now assuming I get the head and 2 210s eventualy, then I want more speakers, assuming I understood your post, One option would be to buy a 410, and connect that to one out put of the head, then connect the 2 210s in paralell, and connect that pair or cabs to the other out put of the head?.....If that is correct, how do I connect the pair of cabs in paralell, and then to the head?.....If I had some experience, it would probably be obvious, but I have none.. could you explain here or message me...Im very confused about this.
  17. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    To Fatboys question, the Rumble amps are 4 ohms minimum, so after connecting 2 210's, you are not able to add anything more.
  18. buldog5151bass

    buldog5151bass Kibble, milkbones, and P Basses. And redheads.

    Oct 22, 2003
    Silly question, but why? Those Traynors are decent sounding, extremely light, and usually two 12s get you home. Why make your life more difficult?
    DionClassic and Mystic Michael like this.
  19. Mystic Michael

    Mystic Michael Hip No Ties

    Apr 1, 2004
    New York, NY
    Then take the amp out of that huge, oversized monster of a case. They look cool as can be...but they don't feel so cool when you have to lift one and carry it around. You don't need it. Get a lightweight fiberglass rack case like an SKB or a Gator, and you're all set.

    DionClassic likes this.
  20. DionClassic


    Feb 15, 2012
    Yeah I totally agree. They are a perfect fit the 115 probably won't add much. I'll probably end up selling it.

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