Hum with Coax Digital cable

izafar
izafar Posts: 819
edited November 2006 in Basic Hookup/Wiring Questions
I have been having ground loop hum problems in my system for a month now. I tried debugging by removing the usual suspects i-e Cable, Dish & subwoofer connections. None of these solved the issue. Last night I get frustrated and started removing all connector from my AVR. The hum disappeared when i removed the Coax Digital cable coming from my DVD player.

Has anyone ran into similar issue and what would be the best way to solve this. I can think of two options, i-e either use a TOS Link digital cable or use a ground loop isolator. So far I am inclining on the first one, as I am not sure what would be the impact of using a ground loop isolator on a digital link, i-e will it change jitter properties of the link
-izafar

Goldenear Technology Triton 1 - Benchmark AHB2 - Benchmark LA4 - Auralic Vega - Auralic Aries Mini - Marantz TT-15S1 - Clearaudio Nano
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Comments

  • Kelley_Moore
    Kelley_Moore Posts: 57
    edited November 2006
    Jensen CATV Isolator for Cable. Don't think this will for work for the DISH though. Does your receiver\TV have HDMI ports on it? If so, get rid of the Dig Coax and run your Audio & video thru the receiver via HDMI.

    You could try a cheater plug for the DVD player as I have heard others have had success with it. Look in AVS for the cheater plug.

    Good luck
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  • Schwingding
    Schwingding Posts: 363
    edited November 2006
    Switching to optical is a good way to troubleshoot this problem.
    HT/music rig
    Panasonic PX60U 50" plasma
    Yamaha 5990 AVR
    Onix SP3 tube amp
    bunch of Outlaw 2200 monoblocks
    DUAL SVS PB12+/2 subs :eek:
    Denon 3910 DVD/SACD/DVD-A
    DirecTV HR10-250 DVR
    Onix Strata Mini mains
    Mirage OM10 surrounds
    Polk CSi5 center
    Polk SC80 rear surrounds
    Samsung BDP1000 blu-ray player

    Bedroom rig
    Jolida SJ302a tube amp
    Denon 2910 universal player
    Onix Ref 1 monitors
    Velodyne minivee
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  • PolkThug
    PolkThug Posts: 7,532
    edited November 2006
    Try another rca cable you've got laying around first to make sure you don't have a defective cable.
    Never Forget
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  • malikarshad
    malikarshad Posts: 527
    edited November 2006
    I also noticed that same problem few days ago. The digital coax was causing a hum so I switch to toslink cable and it went away.
    I don't know why it’s causing that. But I have lots of cables crossing each other.
    I just wanted to enjoy music so I did not investigate more.

    Speakers=>Salk Soundscape 8, Soundscape Center,Surrounds-Dali Rubicon LCR, Lsi7
    PreAmp, Amp => Marantz AV8801, ATI 6007 amp, Oppo HA-1 DAC
    Source => Sonore MicroRendu, Oppo BDP-103, Mede8er 600XD, Dune HD Smart D1, Synology DS1813+(16TB)
    Sub - JTR Captivator S2 (Dual 18")
    Power - Furman IT-Ref20i on dedicated 30Amp circuit with Furutech GTX-R outlet
    Screen=> JVC RS-45 projector Da-Lite HP 133" 2.35
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  • izafar
    izafar Posts: 819
    edited November 2006
    I will get a toslink cable today and check it out
    -izafar

    Goldenear Technology Triton 1 - Benchmark AHB2 - Benchmark LA4 - Auralic Vega - Auralic Aries Mini - Marantz TT-15S1 - Clearaudio Nano
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