Help With Potentiometer

I have had a slight center image shift to the left for some time. My listening room has been a such a mess that until now that I did not concern myself with it.

With music and SDA's I was not 100% sure that it is shifted so I found an old Maxell test cd with test tones to confirm. I also used my grandson to confirm that it is not my ears.

So I am on a quest to find the root cause. I have not finished the search but after talking to Musical Concepts (they rebuilt my Haflers) one cause could be the volume pot.

Currently it is a Bournes 50k pot.

My question is if turns out to be the volume pot what would you recommend as a replacement.
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"

Comments

  • F1nutF1nut Posts: 37,671
    Very high quality pots are bloody expensive, so take a look at what's available and fits your budget.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • txcoastal1txcoastal1 Posts: 7,792
    I also notice there is a balance POT on the Hafler DH-110 Preamp
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures, Simaudio 780D DAC
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Modwright LS100, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers
  • machonemachone Posts: 765
    Yeah,

    I plugged the SA8005 directly into the amp and ran the test disc. Everything seemed centered. Crossed the IC'S and double checked. All good.

    Put the preamp back in the loop and now everything seems centered!

    Must have been an oxidized cable connections?
    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"
  • jdjohnjdjohn Posts: 173
    As preventative maintenance for the future, you might consider spraying DeOxit on those connections AND inside that volume pot...unless it's totally sealed. Might as well hit the inside of the balance pot, tone controls, and rotary switches while in there, along with anything else that has contacts.
  • machonemachone Posts: 765
    jdjohn wrote: »
    As preventative maintenance for the future, you might consider spraying DeOxit on those connections AND inside that volume pot...unless it's totally sealed. Might as well hit the inside of the balance pot, tone controls, and rotary switches while in there, along with anything else that has contacts.

    I plan to open it this weekend and do just that.
    Also there are some ribbon connectors that need to be addressed.
    Last night the image was shifted again!
    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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