Sony STR-DH750 Help Manual page 237

Help Guide
MULTI CHANNEL AV RECEIVER
STR-DH750/STR-DH550
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/BI-AMP/FRONT HIGH/FRONT B terminals properly. For details, see
"Setting the assignment for the speaker terminals (SB Assign) (for STR-DH750
Set the speaker output to a setting other than [SPK OFF]. For details, see
STR-DH750 only)."
Disconnect the headphones.
Remove any obstructions between the optimizer microphone and the speakers.
For accurate measurement, make sure the environment is quiet and free from noise.
Note
The speakers emit very loud sound during the calibration and the volume cannot be adjusted. Be considerate
of your neighbor 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.
Related Topic
Confirming active subwoofer setup
Selecting the front speakers (for STR-DH750 only)
Connecting the optimizer microphone
Notes on use
4-488-933-11(1)
Copyright 2014 Sony Corporation
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only)."
"Selecting the front speakers (for