SVT-15 x 2 Phase Issue

Discussion in 'Amps and Cabs [BG]' started by Lagaupia, Apr 6, 2014.

  1. Lagaupia


    Apr 23, 2007
    I recently got 2 Ampeg Classic Series SVT-15E's.

    I plugged in my SVT and thought it sounded thin. I know that the stock speakers in these cabs only handle 200w but still thought it should have sounded better than it did.

    I took my GK MB500 and hooked it up to both cabs individually and they both sounded great.

    Could I be experiencing a phase issue with these cabs even though they are identical?
  2. lokikallas

    lokikallas Supporting Member

    Aug 15, 2010
    los angeles
    Search "battery test"
  3. Try Daisy chaining the cabs?
    Back when I had a LMII when I plugged 2 cabs into the 2 speaker out jacks I had phase issues. Daisy chained em & all was fine 😨😨😨
  4. B-string

    B-string Supporting Member

    Short answer. Yes.
    It is always possible for the cabs to be out of polarity. Either by cable wiring or internal cab wiring.
  5. walterw

    walterw Supportive Fender Commercial User

    Feb 20, 2009
    +1 on the 9V battery test:

    plug a 1/4" cable into the cabs, then touch a 9V to the other end; when you touch the + of the battery to the tip of the cable and the - to the sleeve, both speakers should jump forward.

    you should do this test on any cab you get, especially used.
  6. JimmyM


    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Yep, would bet money that's the problem.
  7. Primary

    Primary TB Assistant

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