DSWPro500 hummmm.....

Chameleon2Chameleon2 Posts: 112
Just started yesterday.

Thinking it might be the 60hz problem - just don't know how to solve it.

Any suggestions?
Post edited by Chameleon2 on

Comments

  • ConradiclesConradicles Posts: 5,890
    edited March 2011
    Maybe start with a cheater plug to see if it is a ground loop hum. Has it been working fine in the past?
  • Chameleon2Chameleon2 Posts: 112
    edited March 2011
    Sorry, I guess I could have given a bit more background.

    Have had the s/w for ~2 years; worked great.

    Just watching the TV yesterday (A/V receiver off) and heard the faint sound.

    [Actually haven't used the A/V system in 2 weeks.]

    Switched power cables (had been using one with a 90 degree bend from monoprice) back to Polks's cable; hum still there.

    Even bypassed the power strip completely and plugged directly into 2 different wall outlets; no change.
  • SRTerSRTer Posts: 372
    edited March 2011
    Chameleon2 wrote: »
    Just started yesterday.

    Thinking it might be the 60hz problem - just don't know how to solve it.

    Any suggestions?

    What's this I hear about a 60hz problem? Please explain or post a like to the thread with the information.
    Fronts: Polk RTi A9
    Center: Polk CSI A6
    Rears: Polk RTi A7
    Receiver: Pioneer Elite SC-35 (140 watts x 7)
    Amplifier: Adcom GFA-555 Mk.II (200 watt @ 8 ohms)
    Sub: Polk DSW PRO 500 (10 inch, 200 Watt)
    TV: Samsung 59 inch 3D Plasma 600 Hz PN59D7000
    Sources: Samsung BD-D6700 3D Blu-ray Player, DirecTV, PS3, iPhone 4 and IPod Classic with Apple Lossless Tracks
  • kevhed72kevhed72 Posts: 3,774
    edited March 2011
    Do a search on "Ground Loop" and you will find a ton of info. here.
    The trick is figuring out where the ground loop hum is originating.
  • cnhcnh Posts: 13,310
    edited March 2011
    k72 has a point. The most common cause of ground loop feedback is your VIDEO cable connections/equipment.

    But, the OP claims that he was fine for 2 years? Hmmmm....have you 'changed' anything in your rig 'recently'--especially any video connections?

    Can't think of anything else. Others will chime in.

    cnh
    Currently orbiting Bowie's Blackstar.!

    Polk Lsi-7s, Def Tech 8" sub, HK 3490, HK HD 990 (CDP/DAC), AKG Q701s
    [sig. changed on a monthly basis as I rotate in and out of my stash]
  • Chameleon2Chameleon2 Posts: 112
    edited March 2011
    Changed anything....no, it's been "as-is" for a long time.

    As I posted before, I have not used the system in 2 weeks when I started hearing the noise.

    I'll try changing the cable this evening (fyi, connection is from the A/V sub-out to the s/w LFE).
  • Chameleon2Chameleon2 Posts: 112
    edited March 2011
    Well, tried 2 different cables, hum still there.

    :confused:
  • Ron TempleRon Temple Posts: 3,217
    edited March 2011
    cablebox is usually the culprit.

    Combo rig:

    Onkyo NR1007 pre-pro, Carver TFM 45(fronts), Carver TFM 35 (surrounds)
    SDA 1C, CS400i, SDA 2B
    PB13Ultra RO
    BW Silvers
    Oppo BDP-83SE
  • Chameleon2Chameleon2 Posts: 112
    edited March 2011
    Ron Temple wrote: »
    cablebox is usually the culprit.

    Sorry, I'm not sure what you mean by cablebox.

    Is it the part (component) of the s/w where the cable connects too?

    Replaceable? A plug-in component or soldered?
  • AveryStevenAverySteven Posts: 1
    edited March 2011
    Yes you are right
    good post
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  • Chameleon2Chameleon2 Posts: 112
    edited March 2011
    Chameleon2 wrote: »
    Sorry, I'm not sure what you mean by cablebox.

    Is it the part (component) of the s/w where the cable connects too?

    Replaceable? A plug-in component or soldered?

    :confused:
  • ROHfanROHfan Posts: 1,005
    edited March 2011
    Ron Temple wrote: »
    cablebox is usually the culprit.

    Is this typical? Reason I ask is that I just got a new entertainment center and because of its design I had to put the cable box on the shelf above my avr which is much closer than it used to be. Everything else is the same including where everything's plugged in. I have developed a hum in my BIC F12 and was just too tired last nite to troubleshoot the issue. Putting that furniture together is a pain in the ****.
    TV: 70" LED Sharp Aquos Quattron 3D
    Fronts: Energy RC70 --- Center: Energy RC-LCR
    Front Heights: Polk RC65i --- Rears: Polk RC85i --- Sub: Power Sound Audio XS15
    Pioneer VSX-1120K --- Parasound HCA-1000A --- Oppo BDP-103
    Vincent Audio SA31 preamp --- Teac UD301 DAC
  • Chameleon2Chameleon2 Posts: 112
    edited March 2011
    Alright, cablebox as in DVR or whatever for the TV. Didn't realize that is what was meant since I have no idea how that could affect this sub and not the others.

    Hum still there and no solutions other than unplugging and not using it.
  • tonybtonyb Posts: 31,648
    edited March 2011
    Go buy a $2 cheater plug and put it either on the power cord for the subwoofer,or the AVR.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1430
    Tad 803 speakers
  • Chameleon2Chameleon2 Posts: 112
    edited April 2011
    what's a cheater plug?
  • tonybtonyb Posts: 31,648
    edited April 2011
    Converts a 3 prong plug to a 2 prong. Any hardware store, Home depot, Walmart, carries them.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1430
    Tad 803 speakers
  • Great article. I'm dealing with some of these issues as well..
    0xc0000005
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