Lexicon SDP-40 manual Levels Calibration, Dacs Calibration, SUB Limiters

The SETUP Menu

JBL

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

		R	SR	RR
		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 SUB LIMITERS

SUB LIMITERS

CAL NOISE	ON
L/R LIMITER	OFF
L/R LIMIT ADJ	100dB
LFE LIMITER	OFF
LFE LIMIT ADJ	100dB

!CAUTION!

HIGH AUDIO LEVELS

LEVELS CALIBRATION (continued)

SETUP SPEAKERS LEVELS CALIBRATION

DACS CALIBRATION (continued)

Before making adjustments, set the SPL meter according to the DACS® Installers Manual or audio calibration disc instructions. If no setting is recommended, set the SPL meter to “C” weighting and “SLOW” response. Use the up and down MENU arrows to manually scroll through menu items. Press the right MENU arrow to select an output for adjustment, then use the up and down MENU arrows to increase and decrease the level of the selected output in 0.5dB increments within a range of -18 to +12dB. Adjust all output levels to achieve the appropriate reading on the SPL meter from the primary listening position. Press the left MENU arrow to exit the selected output and return to the SPEAKER LEVEL ADJUST menu.

Note:

SDP-40 Balanced output levels must be recalibrated when output connections are changed from unbalanced to balanced or vice versa. The balanced outputs are approximately 6dB louder than the unbalanced outputs.

SUB LIMITERS

Dolby Digital and dts(-ES) input types can produce low-frequency peaks at much higher levels than 2-channel input types. In home listening spaces, the subwoofer and its associated amplifier are sometimes unable to reproduce these levels without overloading. For this reason, the unit is equipped with internal sub limiters that help prevent subwoofer signals from exceeding a designated value. This parameter can be adjusted within a 75 to 115dB range. Separate limiters are provided for the SUBWOOFER L/R and the LFE outputs.

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