Impeadence of extension cabinet

Discussion in 'Amps [BG]' started by DieselKTM, Jan 1, 2013.


  1. DieselKTM

    DieselKTM

    Joined:
    Apr 22, 2011
    I need an extension cabinet for my Eden Metro (2X10 @ 8 Ohms).
    Should I get a 4X10 @ 8 Ohm or 4X10 @ 4 Ohms. Id like to keep the speaker loads even?? Help!:confused:
  2. Bass_Pounder

    Bass_Pounder

    Joined:
    Jan 19, 2002
    Location:
    Palm Coast, Florida
    Unless your amp is 2 ohm stable - none of the above
  3. Zooberwerx

    Zooberwerx Gold Supporting Member

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    Dec 21, 2002
    Location:
    Virginia Beach, VA
  4. BassmanPaul

    BassmanPaul Gold Supporting Member

    Joined:
    Aug 25, 2007
    Location:
    Toronto Ontario Canada
    +1 An 8Ω 4x10 will be constantly limited by the 2x10 internal load. A 4Ω cabinet will fall below 4Ω the probable minimum for your amp.
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  6. Got2SadowskyNYC

    Got2SadowskyNYC

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    Artist: Sadowsky, Bag End, Visual Sound, Pedaltrain, George L
    Lets say the amp WAS 2 ohm stable. You could use an 8ohm and a 4ohm cab for a total ohm load of about 3. Although the mismatch shouldn't hurt the amp, it will make the 2 cabs sound different. One would be stronger than the other.

    This why I never mix ohm ratings even if the amp can do it.
  7. Bass_Pounder

    Bass_Pounder

    Joined:
    Jan 19, 2002
    Location:
    Palm Coast, Florida
    It does have it's place though, so understanding is the key.

    When mixing a 2X10 and a 4X10, or mixing a 2X15 with a 1X15 you MUST use the impedance mismatch to your favor so that each individual speaker throughout your mix of cabs recieves the same amount of power.
  8. LowEZ

    LowEZ Supporting Member

    Joined:
    Mar 29, 2011
    Location:
    Central NJ
    The Eden Metro DC210XLT combo is 2 ohm stable, so I would go for either a 4 ohm D410XLT or an 8 ohm D210XLT cab depending on need.
  9. Zooberwerx

    Zooberwerx Gold Supporting Member

    Joined:
    Dec 21, 2002
    Location:
    Virginia Beach, VA
    Whoaaa....that's the one! This would be perfect: use the Metro combo solo for the smaller venues...throw the 2 X 10 ext. cab in the car for the bigger rooms. You've got everything covered with what is feasibly a 500+ watt 4 X 10 rig.

    Riis
  10. LowEZ

    LowEZ Supporting Member

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    Mar 29, 2011
    Location:
    Central NJ
    I've never experienced it personally, but I've read many positive reviews of running a D210XLT together with a D210XST. Being that the combo is an XLT, you may also want to consider an 8 ohm D210XST as an extension cab. The XST is a bit smaller and easier to handle than the XLT, yet it supposedly goes deeper.
  11. DieselKTM

    DieselKTM

    Joined:
    Apr 22, 2011
    Ok.... So a 4X10 4 ohm can will even power output to each speaker?
    :meh:
  12. RickenBoogie

    RickenBoogie

    Joined:
    Jul 22, 2007
    Location:
    Dallas, TX
    Yes, a 4 ohm 410 paired with your 8 ohm 210 combo will be a 2.6 ohm load on the amp, and all 6 spkrs will get even power. So long as the amp truly is stable down to 2 ohms, this would be the biggest "bang for the buck" combination, although an 8 ohm 2x10 ext cab would leave the amp running @ 4 ohms, and be less stress (heat) on the amp.
  13. Bmorefoozler

    Bmorefoozler

    Joined:
    Oct 9, 2009
    Location:
    Baltimore, MD
    If you've got the coin and space do both. Then you can have everything from a 2x10-8x10 and be completely scalable for your situation and provide even power distribution.
  14. DieselKTM

    DieselKTM

    Joined:
    Apr 22, 2011
    Thanks guys....

    Thinking 410 @ 4.
    I've used my 800 rb for 20 years with various cabs. ( the same head). I bought the metro for small gigs. I just love the tone... 2 10s just wont push enough air for most of my gigs... Hope the old GK will forgive me.

    I appreciate all your badly needed input.

    Best regards!

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