JBL AV1 manual Calibrating Output Levels, Internal Noise Test

AV1 Setup

CALIBRATING OUTPUT LEVELS

SETUP SPEAKERS LEVELS CALIBRATION

MAIN MENU

MODE ADJUST AUDIO CONTROLS

SETUP

SETUP

INPUTS

SPEAKERS

REAR PANEL CONFIG DISPLAYS VOLUME CONTROLS TRIGGER

LOCK OPTIONS

SPEAKER SETUP

CUSTOM SETUP THX SETUP SPEAKER DISTANCES LEVELS CALIBRATION

R SR RR

0.0 dB 0.0 dB 0.0 dB

	C
	0.0 dB
M	L	SL	RL
SUB
0.0 dB	0.0 dB	0.0 dB	0.0 dB

LEVELS CALIBRATION

INTERNAL NOISE TEST EXTERNAL NOISE TEST BASS PEAK LIMITER

INTERNAL NOISE

!CAUTION!

HIGH AUDIO LEVELS

SPEAKER LEVEL ADJUST

FRONT LEFT	+0.0dB
CENTER	+0.0dB
FRONT RIGHT	+0.0dB
SIDE RIGHT	+0.0dB
REAR RIGHT	+0.0dB
REAR LEFT	+0.0dB
SIDE LEFT	+0.0dB
SUBWOOFER	+0.0dB

Selecting the SPEAKER SETUP menu LEVELS CALIBRATION option opens the LEVELS CALIBRATION menu, which is used to calibrate output levels for the audio output connectors. Calibration ensures that output levels correspond to THX reference levels (75dB) for input sources such as DVDs.

Note the following to ensure accurate output level calibration:

•Use a Sound Pressure Level (SPL) meter to calibrate output lev- els. An SPL meter is a device that measures the relative loudness of the speakers to ensure accurate output level calibration.

•Before output level calibration begins, eliminate extraneous noises in the listening space, such as conversations, air condi- tioners, and sounds that filter in through open doors and win- dows.

•Before output level calibration begins, remove objects and peo- ple that obstruct the line-of-sight path between the SPL meter and the speaker being measured.

•Output levels should be calibrated from the primary listening position. Place the SPL meter at the approximate spot where the listener’s head will be during listening.

INTERNAL NOISE TEST

SETUP SPEAKERS LEVELS CALIBRATION INTERNAL NOISE TEST

Opens the INTERNAL NOISE message shown above, which indicates that the internal noise test produces loud calibration test signals.

When this message appears, press the arrow to open the

SPEAKER LEVEL ADJUST menu shown above and conduct the internal noise test or press the arrow to close the message without con- ducting the internal noise test. When the SPEAKER LEVEL ADJUST menu opens, the internal noise test automatically begins.

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