Here are a few things you can try to fix it:
Check the Connection: Make sure the headphone jack is fully and securely plugged in. Sometimes a loose connection can cause audio imbalances.
Inspect the Cable: Look for any visible damage or kinks in the headphone cable. A damaged cable can sometimes cause issues with audio balance.
Test with Different Devices: Try your headphones with different devices to see if the problem persists. This can help determine if the issue is with the headphones or the device you're using.
Clean the Jack: Dirt or lint in the headphone jack can cause connection issues. Gently clean both the headphone plug and the device’s jack with a dry, soft brush or a can of compressed air.
Adjust Audio Settings: Check the audio balance settings on your device. On many devices, you can adjust the left-right balance in the sound settings.
Windows: Go to Settings > System > Sound > Advanced sound options > App volume and device preferences.
Mac: Go to System Preferences > Sound > Output, and check the balance slider.
Smartphones: Audio balance settings can usually be found in the accessibility settings.
Try a Different Pair: If possible, test with another pair of wired headphones to see if they exhibit the same issue. This can help confirm if the problem is with your headphones or the audio source.
Replace the Headphones: If none of the above steps work and the issue seems persistent across different devices and cables, it might be time to consider replacing the headphones.
This may or may not apply to you, but ...
I had the same problem a few years ago with an MP3 player. But when I swapped the earphones to the other ears, the lower volume stayed in the same side. That's how I found my hearing in my right ear was weaker than in my left.
