Ground lift, it is needed.

nbrowsernbrowser Posts: 6,581
Yep, need to do the good old ground lift on my main system, the SR5010 and Parasound to be precise. How do I know? Had cable TV installed a few weeks ago and in comes the hum, took care of some of it with a wire from a splitter to the plumbing but needed more. Grabbed a couple of decent computer power cords, snapped off the ground prongs and replaced my fancy spiffy nice AudioQuest power cords with the modified computer ones and hum gone. Now the issue is...the really nice power cords are out for now but I want them back in, can I use a half decent pair of ground cheater adapters with them and be ok SQ wise? Thanks in advance!
Living room: Samsung UN55KU7000 4K UHD HDR 55 inch TV, Marantz CD6004, Pro-Ject Debut Carbon, Parasound zPhono, Mac Mini, Oppo BDP-93, XBox One S 2Tb, Kenwood DPX792BH car deck for radio purposes, Marantz SR5010 AVR, Parasound HCA-1200II, Front SDA 2 modded with Larrys Rings and RD0-194-1 tweeters, Rear Onkyo SKF-4800 Towers, Center CSiA6, BOOM Tannoy TS2.12 Sub, Audioquest Evergreen interconnects just about everywhere except from AVR to amp, MIT Terminator 4, MIT AVT3 speaker cables with extra terminals covered up Monitor 5 Jr+ in the wings for a center channel.

Comments

  • DaveHoDaveHo Posts: 1,478
    I had that issue too. Wanted better power cords but needed to get rid of the ground hum. I had Patrick @ Cullen Cable make me some Gold cords with the ground disconnect at the IEC end of the cable.
  • tonybtonyb Posts: 27,373
    DaveHo wrote: »
    I had that issue too. Wanted better power cords but needed to get rid of the ground hum. I had Patrick @ Cullen Cable make me some Gold cords with the ground disconnect at the IEC end of the cable.

    Good idea.

    Ken, try the cheater plug with the AQ cables, cost ya 2 bucks to find out what you want to know.

    legacy Focus 20/20
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  • motorhead43026motorhead43026 Posts: 1,972
    PS Audio AC3's have a removable ground pin. Very good cable to boot.



    Main System: Anthem 225 Integrated amp; Parasound Ztuner; TechnicsTT SL1350; Vincent PHO-8 phono pre; Marantz CD6005 spinner; Polk Signature S60's
    Wire: Wireworld Eclipse IC, Audio Art IC3; Speaker cable LA International SS-800; PS Audio AC-3 power cords; All into a PS Audio Dectet Power center.

    All TV's sound enhanced by Polk Magnfi Mini's.

    Other; SDA2BTL's, M10 series II, M7C's, Hafler XL600 amp, Parasound HCA-1500 amp , P5 preamp, all in storage.
  • FTGVFTGV Posts: 3,513
    Looks like the SR5010 has a 2 prong IEC ac inlet so there is no safety ground connection. Which model Parasound?
  • Mikey081057Mikey081057 Posts: 4,674
    Did you try grounding the catv cable coming in to the house? or a noise filter on the cable itself?
    HT:Polk LSiM 706 LSiM 705's VR3 LSiM 703's LSiM 702's| Marantz AV7702 | Sunfire TGA-7401 | Oppo BDP-103D | Sony PS4 | Directv Genie HD DVR | Samsung 64" Plasma | SVS PB13 Ultra | MIT EXP 2's (Fronts & Center)

    ManCave: Parasound Halo A23 x2 Amps Parsound Halo A21 Amp & P5 Pre | Usher Dancer Mini-x DMD's| Usher BE-616 Center|KEF T100 Surrounds | SVS SB2000 Sub |Oppo UDP 203 | MIT Shotgun S3's | Marantz SA8004 SACD | Bluesound Node 2 | Music Hall MMF 5.3se TT w/ Soundsmith Carmen | Budgie Phono Pre | Samsung 50" SUHD TV

    Patio Polk Atrium 8's |Marantz 2252B |

    Office Bluesound Node | Audioengine P4 | Peachtree Nova 125SE |

    Closet | SDA SRS 2.3's | Monitor 5B's Yamaha M80 | Yaqin MC100B with Shuguang Treasures KT 88's & CV181Z's | Tesla E83CC's | Marantz 2385
  • FTGVFTGV Posts: 3,513
    https://www.amazon.com/TII-220-Ground-Isolator-applications/dp/B0070Q6URO
    This type of decice should help,Jensen makes one as well.


  • machonemachone Posts: 772
    ^^^^ THIS
    Mojo Audio Joule v5>>Quantum Byte w/JRiver 21 and Fidelizer>> Starlight 7 USB >> Marantz SA 8005>> Equinox 7>>
    Hafler DH-110 Preamp + (Musical Concepts LXII Elite Mod) >>Equinox 7>>
    Hafler DH-500 Amp+ (Musical Concepts PA-6 Elite Mod) >>Belden 5000 10 ga cables>>
    SRS 2.3TL (Fully Modified)...SDA-1A (Fully Modified with Dimensional Tweeter Delete)
    1KVA Dreadnought
    Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
    Yamaha TX-540 Tuner...Sony DVP-NS575P DVD Player

    Separate subpanel with four dedicated 20 amp circuits.
    1. Amplification 2. Analog 3. Digital 4. Video

    "All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
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