Resolving WiFi and Bluetooth problems caused by wireless interference 

Wireless interference can cause the connection to WiFi or Bluetooth devices to become severed or work improperly. But you can take steps to mitigate or prevent these issues.


Symptoms of wireless interference

The symptoms below can be caused by interference that disrupts the WiFi or Bluetooth signal: 

  • Device won’t connect or connection is severed 
  • Connection is slow and signal strength is weak 
  • Playback of audio via WiFi or Bluetooth stalls, stutters, cuts out, crackles or buzzes 


Decrease wireless interference 

You can create a better, stronger wireless signal with these general steps: 

  • Place your WiFi device and WiFi router closer together. Place the devices you are trying to connect closer together. 
  • Try not to use your wireless devices near common sources of interference, such as electric cables, microwaves, fluorescent tubes, wireless video cameras and wireless phones. 
  • Decrease the number of active devices using the same wireless frequency. Both Bluetooth and WiFi devices use the 2.4 GHz frequency, but many WiFi devices can also use the 5 GHz frequency. If your WiFi router supports both frequencies, it may help to connect more WiFi devices via the 5 GHz frequency. Some dual-band routers manage this automatically. 
  • Set your WiFi router to use another WiFi channel or let the router search for the channel with the least interference. Most routers perform this scan automatically when powering on or after a reset.


Prevent physical obstacles in the path of the wireless signal. A metal surface between your speaker and your source can make the audio cut out, for example, and a floor made of reinforced concrete between your WiFi router and your WiFi device can cause poor WiFi performance. 

  • Mild interference: wood, glass and many synthetic materials 
  • Moderate interference: water, brick, marble High interference: plaster, concrete, bullet-proof glass 
  • Very high interference: metal 


Also take a look at this article: Changing the SSID (WiFi network name). / Separating the 2.4 GHz and 5 GHz WiFi network frequency bands for a better casting experience,


NOTE: The Citation Bar, Citation AMP and Harman Kardon Surround set also can be connected with an ethernet cable.