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mark bass line-out issues

Discussion in 'Amps and Cabs [BG]' started by jimmygoodein, Apr 4, 2009.

  1. jimmygoodein


    Aug 31, 2004
    Hi there,
    Just wanted to bring up some issues I've been having with my mark bass amps.

    I was using a little mark 250 until a couple of months ago when I upgraded to a LMK. Great sounding amp for double bass and electric.
    However, the line out for both of these amps has proven a problem for me. At gigs the line out always hums, whether the ground lift is switched or not. The 250 gave a crackling sound and the LMK gives a hum. The LMK seems to give a much lower signal level than it should (the line out volume control was turned up full) and seems to give a pre-eq signal (i.e. my upright sounded terrible through the PA but nice through the amp).

    A sound man today saved me. All he did was stick a transformer between the line out and the mixing desk and all of a sudden the hum was gone and the sound of the bass came through at an appropriate level.

    Just wondering if anyone else has experienced this problem? Is it a really obvious problem that I'm too thick to think of?
    I think the mark bass amps are fantastic, so its annoying when little things like this happen!

  2. i find the line out (on my sa450) doesnt have enough low end, i try and get the soundguy to use an external DI when possible and that makes things gravy.

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