Running cabs in series or parallel?

Discussion in 'Amps and Cabs [BG]' started by billardbass, Jul 19, 2013.

  1. I play a hartke 350w head with a 4x10 and 1x15. I've always ran them in series but my head has two outputs. Will running them parallel affect tone, resistance, volume, etc?
  2. B-string

    B-string Supporting Member

    You bought or made a special cable to run them in series? If you ran a cable from the amp to cab one and a cable from cab one to cab two that is a parallel connection. Exactly the same as running two cables from the amp head.
    mcnach likes this.
  3. Oh ok. The latter description is what i do. Thanks!
  4. Either way, even though it doesn't look that way you are running parallel, which is the normal and usually the correct thing to do. You'd need a special cable to run them in series.
  5. Kmonk


    Oct 18, 2012
    South Shore, Massachusetts
    Endorsing Artist: Fender, Spector, Ampeg, Curt Mangan, Nordstrand Pickups, Korg , Conquest Sound
    I respectfully disagree.

    Series and Parallel

    When you hook up more than one speaker to an amp, there are two ways they can be arranged: in series, or in parallel.

    Series means chaining the cabinets together one to the next.

    Parallel means sending one output of the bass amp head to one cabinet and a second output from the head to another cabinet. Parallel is two (or more) side-by-side connections.

    A special cable is not needed.
    GuitarRebel and Rob bassman like this.
  6. B-string

    B-string Supporting Member

    Ah okay, the second jack on the cabs is just like the jack on the amp head as far as amp loading (parallel connection). :)
  7. OK, but you're wrong. The website you quoted is wrong.
    mcnach likes this.
  8. B-string

    B-string Supporting Member

    Sorry you are incorrect. To prove it plug a second cable into the first cab but leave the other end free. If the first cab still plays it is a parallel connection. No cab made uses a series jack as a free cable in the "output" jack would interrupt operation (that is a series connection).
  9. B-string

    B-string Supporting Member

    Yes some hinky site can try to rewrite basic electronics if the wish, it will never make them right ;)
  10. Bob Lee (QSC)

    Bob Lee (QSC) In case you missed it, I work for QSC Audio!

    Jul 3, 2001
    Chester, Connecticut
    Former Technical Communications Developer, QSC Audio
    Daisy-chaining cabinets is a parallel arrangement.

    Series connections are extremely rare, and generally more difficult and less reliable than parallel.
  11. BassmanPaul

    BassmanPaul Inactive

    Some combo amps that have an extension jack connect that extension in series. This is because the load the amp "sees" from the combo's speakers are the minimum that it can handle. These are special cases and are not that many in number. Separate heads are pretty much all in parallel - i've yet to meet one that isn't.
  12. Wait!!!
    You mean everything on the internet isn't true???? :eek:
  13. B-string

    B-string Supporting Member

    Lets Wiki that, hahahahahahahaha :p :D
  14. 3506string


    Nov 18, 2004
    Lawton, OK
  15. It happens. In this case, you could argue it's a language problem--from the site--
    "Series means chaining the cabinets together one to the next.
    Parallel means sending one output of the bass amp head to one cabinet and a second output from the head to another cabinet. Parallel is two (or more) side-by-side connections.

    Most of the time you will wire bass cabinets in parallel. ThatÂ’s how we will wire the upcoming examples."

    In theory you could argue that in a sense they're right, but they fail to point out that the connectors on standard cabs won't accomplish a series connection and that to do so requires special, non-standard connections or cables. So it's misleading.

  16. If you say so.
    In my world this statement is simply incorrect.
  17. B-string

    B-string Supporting Member

    It is not just misleading, it is plain wrong. There is no "series" to be had, if anyone was picking cabs to match amp minimum load......disastrously wrong!
  18. Dave W

    Dave W Supporting Member

    Mar 1, 2007
    Westchester, NY
    If you mean this as "they are together in A series..." sure, I can see what you're saying. But in electronic terms, that's not a series connection.
  19. B-string

    B-string Supporting Member

    Even then you would have to run a cable from the second cab back to the amp to be in "series"? Series is an unbroken dependant loop.
  20. will33


    May 22, 2006

    I hope this site has a legal disclaimer in there somewhere and/or it's owner has good insurance.

    It is completely wrong and following it's advice can and will lead to unsuspecting players destroying expensive equipment.
    GuitarRebel likes this.

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