Ampeg SVT 410HLF Speakers Light Up.

Discussion in 'Bass' started by gabrieluko, Feb 2, 2009.

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  1. gabrieluko

    gabrieluko Guest

    Hey guy, I don't know if this is normal.
    The bass player in my band has a Ampeg SVT 410HLF Cab with a Markbass Little Mark II.
    Now, when he plays loud the speakers inside the cab light up. Depending on how hard/loud he plays, the speakers become brighter. I think higher tones make it happen more.
    Could someone PLEASE explain this to me? Tell me if it's bad, if it doesn't matter, if it needs repair/maintenance.


    edit: Apparently is happens when he uses the SansAmp Bass Driver DI.
  2. Greener

    Greener Guest

    It lights up and it's not meant to? I could see a gimmick or somnat where people put LED's in there amps but if it's not meant to then something is electrically arcing. Not cool, you're asking for fire.
  3. dvdhawk

    dvdhawk Well-Known Member

    Dec 18, 2008
    Western Pennsylvania, USA
    Hi Gabriel,

    The Ampeg 410HLF has a 1" horn in it along with the standard 10-inch speakers. A lot of 2-way speakers that use a built-in crossover these days use a light bulb as a fuse. It's ingenius really. It will blow if you over load it just like a normal fuse. Plus as an added bonus just below that breaking point - the glow of the lamp filament helps dissipate some of the excess energy - given off in the form of heat & light (like most lightbulbs - mostly heat). So it's like the ultimate slow-blow fuse. So, if your bass player is lighting up this bulb on a regular basis, he's dancing on the edge of over-powering the cabinet. The Sans Amp DI has probably thickened up the low end requiring more power.

    I used to work with a guy who when he would blow one out of his PA cabinets, he'd go swipe a bulb out of a dome light in his Ford Econoline van and swap it out until he could get a replacement.

    Hope that helps,

  4. Greener

    Greener Guest

    Ahhh. That makes sense.
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