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Mismatched speakers a problem?

Discussion in 'Amps and Cabs [BG]' started by trackskinz, Feb 28, 2013.

  1. trackskinz


    Nov 1, 2011
    Looking for a cab, found a mesa boogie 215.
    The guy says "it has one 400w EV (oem) and one 350w Black Widow". Assuming they are both 8ohm, is this an issue?
  2. Hard to say. May sound fine, may sound like poo.
  3. yodedude2

    yodedude2 Supporting Member

    Nov 19, 2005
    san antonio, texas
    probably. but not necessarily. only way to know is to try it out--i would not invest too much cash into it myself.
  4. Russell L

    Russell L

    Mar 5, 2011
    Cayce, SC
    My Peavey cab with a Black Widow was 4 ohms.:eyebrow: Just sayin'...
  5. +1
  6. trackskinz


    Nov 1, 2011
    Sound is easy enough to check - I was concerned about a mismatched load, but that only depends on impedance, correct?
  7. yes.

    Those are two very different sounding speakers and that cab might not be tuned/sized ideally for the BW so that's something to keep in mind when you're listening to it.
  8. Randy S

    Randy S

    Jul 7, 2008
    Western WA
    From what you describe, it appears that the cabinet is intended to be a four ohm box.
    (Two 8 ohm speakers in parallel)

    It might sound like a farting cow, but if your amp can handle four ohms, you'll be fine.
  9. trackskinz


    Nov 1, 2011
    Sound is easy enough to check - I was concerned about a mismatched load, but that only depends on impedance, correct?
  10. trackskinz


    Nov 1, 2011
    What kind of stuff should I listen for? All I have ever had was single speaker combos.
  11. DigitalMan

    DigitalMan Wikipedia often mistakes my opinions for fact Supporting Member

    Nov 30, 2011
    Assuming you know your bass itself doesn't have quiet or dead spots, play up and down the fretboard looking for any inconsistencies in volume. Quiet or dull spots could indicate phase cancellation due to response deltas at certain frequencies. Your ears are perfectly adequate to measure for this.
  12. trackskinz


    Nov 1, 2011
    Very good! Thank you.
  13. wcoffey81


    Feb 3, 2012
    S/E Michigan
    is the cab priced at a point where, in the future, reloading it with two new drivers is an option?
  14. trackskinz


    Nov 1, 2011
  15. I paid less then that for a Roadready 2X15 with the correct speakers, so I would say it is too high.
  16. mystic38


    Dec 4, 2012
    Mystic CT
    i wouldnt touch it...certainly not for $400

    1. any given driver has an optimum cabinet size and its highly unlikely that the replaced speaker requires the same cab volume as the original.
    2. speakers are unmatched in efficiency and phase response.
  17. will33


    May 22, 2006
    If they're both in the same cab, sharing the same airspace, that can be a real problem. Worse than just stacking different cabs together where mayne they sound alright, maybe they don't. Having them sharing the same space like that can cause some real interference, possibly causing you to keep cranking knobs looking for sound that's just not going to be there and blowing things up.

    IMO, dude's just probably hoping the Mesa name is enough to sell it, as if the logo makes the tone better or something. I'd pass, or at least tell him it needs the correct speakers before you'll buy it.

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