Ground Loop /Balanced Interconnects!

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wingnut4772
wingnut4772 Posts: 7,519
edited August 2006 in Troubleshooting
:eek:

I am still in the process of re-doing my HT and I finally got my balanced DH Labs Air Matrix interconnects. I hook them up and....Hummmmm.:eek:

So, I go throught the whole thing of unplugging everything. The first suspect the Sat box. I unplugged everything with no improvement. The only thing in my system that made a difference was removing the HDMI cable from the Anthem D2 that is coming from the Sat but there is still an audible hum. I never got any noise with my RCAs. Dead quiet. So, unless anyone here knows why this is happening I am returning the XLRs for my good ole' RCAs. They sound phenominal anyway...I don't know why I felt the need to try the balanced.
Sharp Elite 70
Anthem D2V 3D
Parasound 5250
Parasound HCA 1000 A
Parasound HCA 1000
Oppo BDP 95
Von Schweikert VR4 Jr R/L Fronts
Von Schweikert LCR 4 Center
Totem Mask Surrounds X4
Hsu ULS-15 Quad Drive Subwoofers
Sony PS3
Squeezebox Touch

Polk Atrium 7s on the patio just to keep my foot in the door.
Post edited by wingnut4772 on
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  • wingnut4772
    wingnut4772 Posts: 7,519
    edited August 2006
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    I don't think I have that switch....:confused: I will look
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.
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  • george daniel
    george daniel Posts: 12,096
    edited August 2006
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    anonymouse wrote:
    I would use XLR only if you have very long runs. Having said this, on my Rotel amp there is a switch to go from balanced to unbalanced. Do you have the same? Is it in the right position?


    Good suggestion, had the same problem with my amp,after moving it one of the switches was inadvertently flipped on the right channel,went through 2 sets of IC's before I figured it out :o
    JC approves....he told me so. (F-1 nut)
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  • wingnut4772
    wingnut4772 Posts: 7,519
    edited August 2006
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    Nope. No switches
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.
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  • wingnut4772
    wingnut4772 Posts: 7,519
    edited August 2006
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    Screw it. They are going back.:mad:
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.
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  • faster100
    faster100 Posts: 6,124
    edited August 2006
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    Stick with the Rca's darla and put your mind on more important things in the system :)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • wingnut4772
    wingnut4772 Posts: 7,519
    edited August 2006
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    The only reason I got the XLRs is because another D2 owner recommended them over the RCAs but I really can not imagine that they sound better over a 1 meter run and in my system thery certainly don't.:p
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.
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  • schwarcw
    schwarcw Posts: 7,328
    edited August 2006
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    Let us know if you get the hum with the RCA's, even if you didn't have it before. Ground loop hums can drive you crazy to find. They are usually cheap to fix once they are finally found.
    Carl

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  • fredv
    fredv Posts: 923
    edited August 2006
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    I hate fighting ground loops. My gears are all RCAs. Everything I switching, the battle starts. I thought XLRs are immuned to ground loops, no? Or XLR has it's own quirky daemon?

    -fredv-
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  • Grimster74
    Grimster74 Posts: 2,564
    edited August 2006
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    See, I was in a different boat. I have the hum if I use the RCA's. Once I went to the XLR cables, hum was gone.
    Money Talks, Mine says Goodbye Rob!!!!
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  • wingnut4772
    wingnut4772 Posts: 7,519
    edited August 2006
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    schwarcw wrote:
    Let us know if you get the hum with the RCA's, even if you didn't have it before. Ground loop hums can drive you crazy to find. They are usually cheap to fix once they are finally found.
    RCAs are super duper quiet.
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.
    · Share on FacebookShare on Twitter