MULTI CHANNEL AV RECEIVERSTR-DH750/STR-DH550

Severe humming or noise (for STR-DH750 only).

  • If there are obstructions between the receiver and your BLUETOOTH device, remove them or move the receiver and/or device avoid them.
  • If there is a device that generates electromagnetic radiation, such as a wireless LAN, other BLUETOOTH device, or a microwave oven nearby, move it away.
  • Turn down the volume of the connected BLUETOOTH device.