2. Before you perform Auto Calibration

Before you perform Auto Calibration, check the following items:

  • Set up and connect the speakers.
  • Do not connect any microphones other than the supplied optimizer microphone to the AUTO CAL MIC jack.
  • If using a bi-amplifier connection or speakers with a front B connection, set the assignment for the SPEAKERS SURROUND BACK (FRONT B/BI-AMP/ZONE 2) terminals properly. For details, see “Assigning the surround back speaker terminals (SB Speaker Assign).”
  • Set the speaker output to a setting other than [SPEAKERS OFF]. For details, see “4. Selecting the front speakers.”
  • Remove any obstructions between the optimizer microphone and the speakers.
  • For accurate measurement, make sure the environment is quiet and free from noise.


  • The speakers emit very loud sound during the calibration and the volume cannot be adjusted. Be considerate of your neighbors and any children who are present.
  • If the muting function has been activated before you perform Auto Calibration, the muting function will shut off automatically.
  • It may not be possible to take the correct measurements or to perform Auto Calibration at all if special speakers such as dipole speakers are used.