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Sound crackles, is distorted, has a loud hum or buzzing.

  1. Turn the iPod device or other source component’s volume down.
  2. Make sure that the iPod’s device EQ setting is set to “OFF.”
  3. Make sure that the iPad, iPhone, or iPod is docked properly with the iW4.
  4. Make sure that the audio cable is plugged all the way into the iW4’s Aux Input jack.
  5. Replace the aux-in cable.
  6. Unplug the power supply and connect it to a different AC outlet.
  7. Move unit away from potential sources of interference, such as microwave ovens, fluorescent lights, etc.

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