JBL SDP-40 manual Performing Manual Output Level Calibration, Setup, Note the following

SDP-40

SETUP

Performing Manual Output Level Calibration

SETUP SPEAKERS MANUAL LEVELS CALIBRATION

Selecting the MANUAL SPEAKER SETUP menu LEVELS CALIBRATION option opens the LEVELS CALIBRATION menu shown below, which can be used to manually calibrate output levels.

MAIN MENU

MODE ADJUST AUDIO CONTROLS SETUP

SETUP

INPUTS

SPEAKERS

REAR PANEL CONFIG DISPLAYS VOLUME CONTROLS TRIGGERS

LOCK OPTIONS

SPEAKER SETUP

CUSTOM SETUP SYNTHESIS 7CH SETUP SPEAKER DISTANCES LEVELS CALIBRATION

S

RRR

R

+0.0dB +0.0dB +0.0dB

	C
	+0.0dB
M	L	SL RL
SUB

+0.0dB +0.0dB +0.0dB +0.0dB

LEVELS CALIBRATION

INTERNAL NOISE TEST DACS CALIBRATION BASS PEAK LIMITERS

R SR RR

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
MONO SUB	+0.0dB
SUB RIGHT	N/A
LFE	N/A

-18.0 to +12.0dB

Note the following:

•It is recommended to use a Sound Pressure Level (SPL) meter to manually calibrate output levels. An SPL meter is a device that measures the relative loudness of the speakers to ensure accurate output level calibration. SPL meters are available at Radio Shack (catalog no. 33-2050).

•Output levels should be calibrated from the primary listening position, placing the SPL meter at the approximate location of the listener’s head during listening.

•Output levels for speakers that are not included in the speaker setup cannot be adjusted during the internal noise test. These output levels can be adjusted during the external noise test, but there is no need to do so.

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