Lexicon SDP-40 manual Audio Controls Treble, Audio Controls Tilt EQ

SDP-40

The AUDIO CONTROLS Menu

TREBLE	(-6.0 to +6.0dB)
AUDIO CONTROLS	TREBLE

TREBLE controls the amount of boost or cut applied to the FRONT L/R and CENTER outputs. When TREBLE is selected, a horizontal graph will appear on the screen below the parameter. This graph illustrates the position at which the current setting falls within the -6.0 to +6.0dB parameter range. Press the up and down MENU arrows to increase and decrease the setting in 0.5dB increments. Press the left MENU arrow to close the graph and return to the AUDIO CONTROLS menu.

The graph pictured below shows the frequency response of all TREBLE settings.

+6.0

+5.5

+5.0

+4.5

TILT EQ	(-3.0 to +3.0dB)
AUDIO CONTROLS	TILT EQ

TILT EQ controls the amount of tilt equalization applied to the FRONT L/R, CENTER, SUBWOOFER L/R, and LFE outputs. When TILT EQ is selected, a horizontal graph will appear on the screen below the parameter. This graph illustrates the position at which the current setting falls within the -3.0 to +3.0dB parameter range. Press the up and down MENU arrows to increase and decrease the setting in 0.5dB increments. Press the left MENU arrow to close the graph and return to the AUDIO CONTROLS menu.

TILT EQ affects the entire frequency spectrum with a hinge point at 1kHz. As it is increased, frequencies above 1kHz are boosted, while frequencies below 1kHz are simultaneously cut. As it is decreased, frequencies above 1kHz are cut, while frequencies below 1kHz are simultaneously boosted. The graph pictured below shows the frequency response of all TILT EQ settings.

										+4.0
										+3.5
										+3.0
										+2.5
										+2.0
										+1.5
										+1.0
										+0.5
+0.0										+0.0
										-0.5
										-1.0
										-1.5
										-2.0
										-2.5
										-3.0
										-3.5
										-4.0
										-4.5
										-5.0
										-5.5
										-6.0
10	20	50	100	200	500	1k	2k	5k	10k	20k
					Hz

-3.0 -2.8 -2.6 -2.4 -2.2 -2.0 -1.8 -1.6 -1.4 -1.2 -1.0 -0.8 -0.6 -0.4 -0.2 +0.0 +0.2 +0.4 +0.6 +0.8 +1.0 +1.2 +1.4 +1.6 +1.8 +2.0 +2.2 +2.4 +2.6 +2.8 +3.0

10	20	50	100	200	500	1k	2k
					Hz

+3.0

+2.8

+2.6

+2.4

+2.2

+2.0

+1.8

+1.6

+1.4

+1.2

+1.0

+0.8

+0.6

+0.4

+0.2

+0.0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 -1.6 -1.8 -2.0 -2.2 -2.4 -2.6 -2.8

-3.0

5k 10k 20k

4-3