sda 2b power handling question

sda2mike
sda2mike Posts: 3,131
in Vintage Speakers
hey! it's been eons since I posted here!

anyway, my sda 2btl's, with upgraded coils, sometimes at extreme volumes develop a crackle on one of the inside 6.5 drivers..im running an adcom gfa555..does this sound like I'm hitting the limit as far as current goes?
BTW when I do hear this crackle, my feet don't even touch the ground, I'm on that volume control so fast;)

thanks
mike
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Comments

  • boston1450
    boston1450 Posts: 7,758
    Try switching driver with other speaker & see if it follows
    Randy-Maine
    2ch-RTA15tl crossover upgrade
    by David WMG
    Yamaha cr1000 cr2040
    HT-Yamaha Parasound Acurus
    MIT BJC Cs1000p Polk Rotation
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  • boston1450
    boston1450 Posts: 7,758
    I ran the same amp with my 2b's & it sounded wonderful. I never went that loud with them. It could be the driver is heating up or other issues need to be ruled out
    Randy-Maine
    2ch-RTA15tl crossover upgrade
    by David WMG
    Yamaha cr1000 cr2040
    HT-Yamaha Parasound Acurus
    MIT BJC Cs1000p Polk Rotation
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  • Schurkey
    Schurkey Posts: 2,122
    edited January 2015
    sda2mike wrote: »
    at extreme volumes develop a crackle on one of the inside 6.5 drivers.. ..does this sound like I'm hitting the limit as far as current goes?
    No. You've got a defective driver--or perhaps something internal to the speaker is rattling around (untethered wiring, for example). If this were an amp problem, it wouldn't be limited to a single driver.
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  • Mystery
    Mystery Posts: 2,546
    If the issue follows that driver in another cabinet, time to get replacement.

    Klipsch RB81, KG3.5, B&W DM602.5, Polk.
    Subwoofers: Klipsch RW10, Triad ProSub Bronze.
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  • TNTsTunes
    TNTsTunes Posts: 751
    edited January 2015
    Sounds like you have a driver that has a weak spider.
    "Make a man a fire and he'll be warm for a day. Light
    a man on fire and he'll be warm for the rest of his life."

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  • Mystery
    Mystery Posts: 2,546
    TNTsTunes wrote: »
    Sound like you have a driver that has a weak spider.

    Or the VC former has come undone.
    My RTA-11t driver was like that.
    Spider was fine but the VC coil attachment was ripped in few places around.

    Klipsch RB81, KG3.5, B&W DM602.5, Polk.
    Subwoofers: Klipsch RW10, Triad ProSub Bronze.
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  • boston1450
    boston1450 Posts: 7,758
    Any luck pinpointing problem ?
    Randy-Maine
    2ch-RTA15tl crossover upgrade
    by David WMG
    Yamaha cr1000 cr2040
    HT-Yamaha Parasound Acurus
    MIT BJC Cs1000p Polk Rotation
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  • sda2mike
    sda2mike Posts: 3,131
    no..didn't get a chance..thanks for the responses:)
    i'll have a look this week
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