Popping sound


There’s an intermittent popping (electronic) sound coming from my left speaker only. It occurs at intervals of maybe 20 minutes or longer. I can live with it but I think it’s odd that it only emanates from one channel.

 Any ideas?

rvpiano

Showing 2 responses by ghdprentice

@gdaddy1 

Yes, it looks that way. I just used the OPs question as posted. 

It’s good to know it that level of detail works. I must admit I am using AI more and more, and it is becoming so much more useful. 

Thanks for the tips.

 

I use it all the time to find out how to do things on my computer, usually just google. And the step by step instructions are so much better that a list of possible sites and posts that talk about it. 

I use it the most for history and philosophy. Great for summaries. 

@gdaddy1

That was a great idea. So, I had to do it. It asks at the end for a component list. 

 

Possible Causes:

  1. Loose or Oxidized Connections:

    • Speaker cable connection at the amp or speaker might be loose or dirty.

    • Interconnect cable (RCA/XLR) between the source and the amp (or preamp) could be partially failing.

  2. Faulty Component in the Signal Chain:

    • The left output stage of a preamp, DAC, or source device could be unstable.

    • If it's a tube amp or preamp, a tube in the left channel might be going noisy with heat cycling.

  3. Dirty or Aging Potentiometer or Switches:

    • Balance knobsinput selectors, or volume controls (especially analog ones) sometimes arc or pop intermittently when oxidized.

  4. Interference or Ground Loop (less likely if infrequent and only in one channel):

    • A nearby device or power fluctuation could be inducing noise—but these usually affect both channels or are more frequent.

  5. Amplifier Issue (Left Channel Only):

    • The left power amp channel might have a capacitor or solder joint failing, causing momentary instability as things warm up.


🧪 Diagnostic Steps:

  1. Swap the Left and Right Speaker Wires at the amp:

    • If the popping moves to the right speaker, the problem is upstream from the amp.

    • If it stays in the left speaker, the issue is likely in the speaker or amplifier.

  2. Swap Interconnects (Left ↔ Right) from your source (DAC, CD player, etc.) to the amp or preamp.

    • Does the popping follow the cable?

    • This can isolate the problem to a particular input device or cable.

  3. Try a Different Source or Bypass Components:

    • If you're using a preamp + power amp, try running a DAC directly to the amp if possible.

    • Or vice versa: bypass the DAC if using digital gear.

  4. Monitor for Changes with Heat:

    • If it always happens after ~20 minutes, it could be a heat-related issue with a solder jointtube, or aging component.


🛠 What to Do Next:

  • Clean all connections (interconnects, speaker terminals) with contact cleaner like DeoxIT.

  • Inspect tubes if you're using a tube system—try swapping left/right tubes to see if the issue follows.

  • Check your cables—they can go intermittent internally without being visibly damaged.

  • If it only occurs at long intervals, consider setting up a recorder or monitoring app to capture the pop and correlate it with system use or temperature.


Let me know the type of gear you're using (amp, preamp, DAC, etc.), and I can give you more targeted advice.