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Another ohm question

Discussion in 'Amps and Cabs [BG]' started by superflybass, Mar 23, 2006.


  1. superflybass

    superflybass

    Feb 16, 2004
    La Crosse WI
    so I looked a bit on this one but cant find any answers by googling I got ahold of a older yamaha 2x8 plus horn cabs
    8ohm cab

    one of the 8in speaker are gone in both
    so there are not to many 16ohm drivers out there, that are 8in

    I dont what to spend alot of money

    I need to stay in the realm of 4 to 8 ohm for my pratice mixer to work


    what are some ways to wire with different ohm, cab or what do you all think?



    will this 16ohm work for my need even though it is for home audio?
    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=299-134



    would it be better to go 8 or 4 ohm

    here are some ideas this is just for a pratice pa mostly for vocals
    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=290-260
    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=292-212
    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=290-356
    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=290-310


    thanks for any advice you all can offer
     
  2. joelb79

    joelb79

    Mar 22, 2006
    Lansing, Michigan
    2) 8ohm drivers would be a 4ohm load.

    i would recomend sticking to 8ohm drivers, and running a 4 ohm load. The problem will occur with the high frequency driver and crossover inside this cabnet. You may need to rework the crossover.

    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=290-401

    This is the speaker right here. they are decently priced. They have a decent frequency response curve.

    http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=264-330

    These right here would work as well.


    You probably want to stick with speakers that are designed for PA/Instrument usage, due to the fact that they are more efficient, and will use the power more wisely.

    However, if you REALY wanted to use the home speaker versions that you were looking at, then you can. They wont sound as punchy, i can guarantee that.

    Question: What power are you running?
     
  3. I had a pair of these, they are neat! They are half broken at my friends studio, I <<<MIGHT>>> be able to hook you up.
     
  4. superflybass

    superflybass

    Feb 16, 2004
    La Crosse WI
    yha that is what I am thinking also but what would be the level on a 8ohm and a 16 ohm
    or 16 ohm and a 4 ohm ?

    I under stand the whole 2 4 ohm = 2 ohms etc just not sure on mis matched ohms
     
  5. joelb79

    joelb79

    Mar 22, 2006
    Lansing, Michigan
    unless your amp has some form of protection for its output mosfets, the worst that can happen when hooking up a 2 ohm load to a non capable amp would be blown mosfets and a few resistors nearby.

    ive sucessfully loaded 2 ohm load (bridged) on amplifiers before without a problem. however, that was for bass only, which gets tricky.

    i can almost guarantee that 2 ohms of speaker load will equal something a bit higher than that after you drop them in a cabinet and wire them up with speaker cables. Once the speaker has resistance behind it in the form of restricted air movement, the speaker will load much higher than 2 ohms, and where that really matters is in the bass frequencies.

    so you have 2 of these cabinets right? one with a blown speaker? and you want to replace the speakers in that one?

    so you will have 1) 8ohm cabinet and 1) 4 ohm cabinet? that makes 2.3 ohms total load with both of them.

    or you could wire up the 2) 8 ohm speakers to make 16) ohms by running them internaly in series.

    or you could get clever with your speaker wires and have a 12 ohm load by running the cabinets in series instead of paralell. The choice is yours.


    either way, whatever you choose to do, somebody here should be able to answer the questions you have. i'll keep an eye on this thread as well.
     
  6. billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
    Carvin sells a 16 ohm version of the Beta 8, but if the rest of the T/S specs for it, or any driver, aren't compatable with your cabinet you're going to be whizzing into the wind. I'd contact Yamaha for the driver T/S specs before doing anything else.
     

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