Killed my Deltalite 2512

Discussion in 'Amps and Cabs [BG]' started by rufus.K, Jan 14, 2016.


  1. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    I have 2.5 cubic foot box with a 3.5" port about 6 inches long, with a Delta Light 2512 in it.
    I did a pickup gig with an extremely loud band and used it on one side of an Eden WT500. Had another cab on the other side. Both boxes are 8 ohm
    The amp rates [email protected] in stereo mode, so that's what the box should have been getting max. The master was dimed, pre at 1/3, bass eq flat, bump on 2 mids, treb flat. I wasn't not that bassy, just loud. Passive jazz mostly on bridge.
    Now the 2512 buzzes like all heck. I tried 2 other amps. Buzzes with them. Eden sounds clean with other cabs on both channels.
    When in say buzzes, I mean it distorts and fuzzes. What are the chances I screwed it, I was well under its rms rating, in a proper sized box. It's performed well in the past with other amps in other band situations, maybe not so loud though.
    I will check for rattle from hardware, but it sounds like it's cooked.
     
  2. bobcruz

    bobcruz

    Mar 10, 2004
    CA
    Sorry to hear about the damage.

    You forgot to say where you had the speaker-killing Enhance knob set. It's a huge bass boost.

    The old Eden lead sleds easily put out double the RMS wattage peak--easily. The speaker's wattage rating is merely a thermal rating (wattage at which the voice coil melts)--what you need to know is what wattage will drive it to Xlim/Xdamage. It appears you found out the hard way, unfortunately. Did you hear any warning signs like farting or any distortion at all?
     
    High ISO and B-string like this.
  3. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    no enhance knob, it was off.
    Tone wasnt bassy at all, more trebly and biting.
    Tons of distortion, made with a SansAmp BDDI, like I said, master Dimed. No farting, just loud...
     
  4. cfsporn

    cfsporn

    Aug 20, 2011
    New York City
    How old is the speaker? I think you should be able to get it replaced under warranty.
     
  5. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    it was an ebay score, maybe 8 months old.
     
  6. cfsporn

    cfsporn

    Aug 20, 2011
    New York City
    I'd call Eminence and tell them the circumstances.
     
  7. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    im thinking of replacing it with a 3012ho if I can find a deal somewhere
    I have a Delta 12a I can throw in for the meantime
     
  8. B-string

    B-string Supporting Member

    Distortion effects will mask the speaker's cries for help (you can tell the difference with them), master dimed you were well past the clean "rms" power of the amp head. Too much amp power fried it.
     
  9. Jim Carr

    Jim Carr Dr. Jim

    Jan 21, 2006
    Denton, TX or Kailua, HI
    fEARful Kool-Aid dispensing liberal academic card-carrying union member Musicians Local 72-147
    Distortion masks speaker agony. Sorry for your loss.
     
  10. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
  11. BbbyBld

    BbbyBld

    Oct 13, 2005
    Meridian, MS
    Maybe it's just a tensile wire on the side of the cone slapping the side and can be fixed.
     
    rufus.K and wave rider like this.
  12. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    I'm gonna hope so. I'll take it out this weekend and examine.
    I just looked, and my backup driver is a Beta12cx. Not really a good driver for my application.
    Hope I can find a 3012HO deal somewhere
     
  13. Doug Parent

    Doug Parent Supporting Member

    May 31, 2004
    San Diego, Ca.
    Dealer Nordstrand Pickups.
    The Delta 12a will be tight and loud, you might find its not half bad.
     
  14. fdeck

    fdeck Supporting Member Commercial User

    Mar 20, 2004
    Madison WI
    HPF Technology LLC
    There were two series of the 2512, the second (current) one having roughly twice the Xmax. It could be that someone was selling off stock of the old version.
     
  15. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    i just looked, its a Beta12cx, not a Beta12a
     
  16. rufus.K

    rufus.K

    Oct 18, 2015
    SoCal
    Ill have to check when i pull it. I may even have the box still
     
  17. String Theory

    String Theory

    Jul 28, 2010
    San Dimas
    You could take your speaker to Orange County Speaker Repair in Garden Grove. They can probably fix it.
     
  18. wave rider

    wave rider

    Jan 5, 2005
    Check that the wiring became loose and is touching the back of the cone before pulling the driver out completely.

    I have a BE S12 that would rattle when pushed, one of the wires was a little loose/long and was buzzing by the rear port.

    =wr=
     
  19. Arjank

    Arjank

    Oct 9, 2007
    Above Amsterdam
    With tons of distortion you probably can't tell if the driver wasn't farting out, did you see the cone making large excursions?


    It could also be that because of the midheavy tone the driver didn't make enough excursion to cool....when the cone moves the heat that's build up inside the "motor" will be pushed out through the hole in the center of the polepiece. That hole has a few purposes, prevent air compression between dustcap and polepiece and therefore lowering mechanical resistance (Qms gets higher), when designed right it may also lower harmonic distortion and last but not least the release of warm air inside the motor.
     
    Last edited: Jan 15, 2016
  20. Check the cab - maybe something came loose. That said - distortion pedal?

    When I read pre on 1/3, I was thinking on a passive Jazz using the bridge pickup, you probably weren't driving the preamp section very hard, so the master being dimed even with a little mid eq bump was probably ok. If however you were using an overdrive pedal - or any preamp before your Eden - then its possible you were feeding the preamp a hot signal turned hotter with eq bump. With the master dimed, your amp could have been clipping at 2-3x the rated rms power output for hours and you'd not hear it through the distortion.

    How did the other cab handle the punishment?

    Now again, could be something loose in the cab or something on the cone, but from your description it does sound like you killed it.
     
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