Sub is whining

skykeys
skykeys Posts: 102
edited October 2008 in Electronics
I woke up yesterday to a very strange sound, akin to a smoke alarm, but not quite as shrill. I couldn't figure out where it was coming from at first, but to make a long story short, I realized that my sub-woofer was making the noise.

The high pitched whine didn't seem to be coming from the speaker. But it was also making a white noise static sound that was coming directly out of the speaker. There was no signal going into the sub. I unplugged the power chord, and the sounds stopped. I waited a while, plugged it in again, and the sound started up. The white noise started immediately, and it took maybe 30 seconds or so for the whine sound to gear up. I should add that when I turned the receiver on and put on music, the sub didn't produce any bass; it just kept on whining. But my other sub worked fine.

FYI - it's a six yr. old Paradigm PDR-10. It had been in storage for about 10 months before I starting using it again (as a second sub) about two weeks ago.

Could this be the amplifier itself? Or some other electronic component that would make this sound? I'm wondering if it might be worth fixing, rather than put out the $ for another low to mid level sub.

I appreciate any ideas.
Speakers:
. 5.2 surround config:
. . . In-wall L & R Fronts and Center: Polk LC265i, LCi-RTS-C. In-ceiling L & R rears: Polk LC80i
. . . Floor Subs: Polk DSWPro 500, Paradigm PDR-10
. Zone B: very old pair of Polk M 5's
. In Storage but still favored: Paradigm Monitors

AVR:
. Yamaha RX-V863

Universal DVD:
. Oppo DV-980H

TV:
. Sony Bravia XBR LCD 40" 720P (2005 vintage)
. Comcast Cable, Motorola box
Post edited by skykeys on

Comments

  • billbillw
    billbillw Posts: 7,797
    edited September 2008
    Most assuredly, something is wrong with the amp/power supply in the sub. Not sure if that's a class A/B amp, a BASH amp, or some other variety. If its an A/B amp, the fix might not be that expensive from a shop. If its a BASH amp, the parts are proprietary and might be expensive.
  • treitz3
    treitz3 Posts: 20,119
    edited September 2008
    Also, I would not plug it back in. If you do, the "magic smoke" might just present itself to you.

    Have you contacted Paradigm?
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • croutons
    croutons Posts: 61
    edited October 2008
    What, your sub can't take a joke?


    (get it? your sub is whining? eh? anyone?...)

    Yamaha RX-V663
    RTi A5 fronts
    CSi A4 center
    FXi A4 surrounds
  • skykeys
    skykeys Posts: 102
    edited October 2008
    croutons wrote: »
    What, your sub can't take a joke?

    (get it? your sub is whining? eh? anyone?...)


    Cute. :D

    Umm , , perhaps a new sub-standard in humor?
    Speakers:
    . 5.2 surround config:
    . . . In-wall L & R Fronts and Center: Polk LC265i, LCi-RTS-C. In-ceiling L & R rears: Polk LC80i
    . . . Floor Subs: Polk DSWPro 500, Paradigm PDR-10
    . Zone B: very old pair of Polk M 5's
    . In Storage but still favored: Paradigm Monitors

    AVR:
    . Yamaha RX-V863

    Universal DVD:
    . Oppo DV-980H

    TV:
    . Sony Bravia XBR LCD 40" 720P (2005 vintage)
    . Comcast Cable, Motorola box
  • doggie750
    doggie750 Posts: 1,160
    edited October 2008
    Check the capacitor....
    Godspeed,
    D0661E

    AVR:Pioneer Elite SC-07
    Surrounds: RTis
    2channel:Rti100 (carver driven
    Sub:SVS PB12-Plus/2
    Dedicated AMPs:Adcom GFA535, 2xCarver 1.5t, Carver m1.0t
    Wsrn:Hitachi ultra vision LCD60, 32XBR400
    PowerConditioner: MonsterC HTS5100
    PS3, Toshiba HD A2, etc: SonySACD/ Panasonic gears DIVX.


    MR3LIGION: Polkaudio; GSXR; E46; Reeftank;
    Odyclub; Xsimulator; Sony; Zune; Canon