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Impedance. Series Wiring for Resistance SUM

Discussion in 'Amps and Cabs [BG]' started by Luis Fabara, Sep 9, 2000.


  1. Luis Fabara

    Luis Fabara

    Aug 13, 2000
    Ecuador (South America)
    Audio Pro - Ecuador
    I have found that many people have trouble trying to find out how to hook two 4 Ohms cabs to an AMP that can only handle a minimum of 4 OHMS.

    THIS IS A Step-by-step procedure to make a SERIAL CABLE for 2 Enclosures.
    This, will sum the Impedances (Or OHM ratings) of the cabs.
    It works like this: 2 8OHM cabs = 16 OHM
    2 4OHM cabs = 8 OHM

    So lets begin.

    First, you need (3) 1/4" Mono Plug Conectors and good speaker cable.

    First you have to solder the positive and negative TIPS on the master
    plug. (The one that will be connected to the AMP)

    Like this
    ___ + (Positive)
    <====|______ - (Negative)

    Now, the cable that was wired to the POSITIVE tip on the master PLUG must
    be soldered to the POSITIVE TIP in the PLUG NUMBER 1, and the cable that
    was wired to the NEGATIVE tip on the master PLUG must be soldered to the
    NEGATIVE TIP in the PLUG NUMBER 2.
    Then , you must add another cable that will be hooked as this.

    Solder one end to the NEGATIVE TIP of PLUG NUMBER 1 and the Other end to
    the POSITIVE TIP of PLUG NUMBER 2.

    Then you can use this cable for any SERIES WIRING for your speakers. Now,
    you have to remember that ONLY the MASTER PLUG must be hooked to your AMP.

    If you found this of any help, please make donations for the
    "A Warwick Bass for "Luis Fabara" Foundation"