I blew a speaker in my MarkBass Traveller. How?!

Discussion in 'Amps and Cabs [BG]' started by Tbcgregory, Feb 3, 2019.

  1. Tbcgregory


    Jul 23, 2011
    I haven’t played my setup in a long time. 7 years, maybe. It was my regular gigging amp for 8 years of constant shows and practice. During the last show I played with it, the ground prong broke on the power supply, and my band wasn’t going to play again, so the stuff went in my closet until 3 nights ago.

    It’s a Little Mark II through a traveler 2x10.

    I went and bought a generic power supply, and hooked it up a few nights ago. Initially it was sounding fine. Then I started getting a distorted sound. My immediate thought, is that the batteries in my active pickups were low, so I replaced them and plugged it back up today. Still distorted AND I began to smell a slight electronic burning smell so I unplugged everything fast. I pulled off the grill and checked both speakers and one of them is grinding when I push the cone down.

    A) could there be an issue with the power supply? B) is it just that the speakers sat dormant for so long? C) what do I do?? I can’t afford another setup, especially MarkBass.

    Thanks for any tips!!
  2. Al Kraft

    Al Kraft Supporting Member

    May 2, 2016
    Northern Virginia
    To start with I don't recall ever seeing an LMII with an external power supply. IIRC they had a standard IEC connector for AC power - i.e. a regular power cord like you have for most any electronic device or bass head. I'm a bit confused right here.

    As for the speaker feeling crunchy/rough/grindy on movement and the smell of something burning prior to that, it might be a failed voice coil. As to why , it might have been a simple failure or there could have been something (a bug, dust, dirt) in the VC gap that fried and caused the problem.

    At this point a visit to a qualified tech might be in order to ensure you do no additional damage troubleshooting.
    Last edited: Feb 4, 2019
    BassmanPaul likes this.
  3. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
    Generic power supply or power cord?

    It's possible that there's a fault in your amp that damaged your speaker.
    Al Kraft likes this.
  4. JimChjones


    Aug 6, 2017
    SE England
    Mmm, when you say power supply do you mean one of these?
    That's actually just the power cable, the true power supply is built into the amp.
    Al Kraft and jnewmark like this.
  5. Tbcgregory


    Jul 23, 2011
    Jim, yes. It's the power cable. Sorry. Not the supply.
  6. Tbcgregory


    Jul 23, 2011
    Al, Yeah, I've decided to take it to the closest place listed by MarkBass for support. It's not under warranty (I bought it used) so I'm probably just gonna pay out of pocket depending on the damage. Hopefully it's not a problem with my head. I can afford a new speaker. haha.

  7. Al Kraft

    Al Kraft Supporting Member

    May 2, 2016
    Northern Virginia
    Good call! I hope it's just a speaker issue that can be easily addressed.

    As for the power cable being "generic", I doubt it had anything to do with the problem you seem to be having.
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