Lexicon MC-1 owner manual Input Configuration, Input Gain Analog Inputs Only

MC-1 Digital Controller

System Configuration

Input Configuration

SETUP MENU

INPUT CONFIG

SPEAKER CONFIG

OUTPUT LEVELS

LISTENER POSITIONINPUT CONFIG MENU LOCK SETTINGS

VCR

DVD

V-DISC

TV

AUX

CD

TUNER

TAPE

The MC-1 has eight inputs, each of which can be associated with any of the eight video and eight digital audio inputs. Selecting Input Configu- ration from the Setup menu displays a sub-menu which lists these inputs and allows you to select them individually for adjustment. Each input has an identical parameter sub-menu. V-DISC is shown below as an example.

INPUT CONFIG V-DISC		Adjust with ▲ or ▼
GAIN	OFF
		AUTO On/Off or MANUAL -18 to +12dB
NAME	V-DISC	RESTORE DEFAULT or EDIT NAME
PCM FX	LOGIC 7	USE LAST EFFECT or any PCM Effect
AC-3 FX	5.1 LOGIC 7	USE LAST EFFECT or any AC-3 Effect
DTS FX	DTS LOGIC 7
		USE LAST EFFECT or any DTS Effect
FX FORMAT AUTOMATIC
		AUTO, PCM ONLY, AC-3 ONLY, DTS ONLY
AUDIO IN	COAX-2
		Sources: ANALOG, COAX 1-2, OPTICAL 1-2
VIDEO IN	V-DISC
		Sources: NONE, VCR, DVD, V-DISC,TV, AUX
REC/ZONE2	ANALOG	Rec/Zone 2 Output: ANALOG, DIGITAL, BLOCKED
TRIGGER	ENABLE
		PGM Trigger Output: ENABLE/DISABLE

Input Gain (Analog Inputs Only)

The GAIN control is only available for analog inputs. Whenever a digi- tal input is selected under AUDIO

IN, this control is automatically set to OFF.

For optimal performance when using analog inputs, the unit must be driven to its full input level without clipping. Despite industry attempts at standardization, different analog sources have a wide range of output levels. To compensate for this, each of the eight MC-1 analog inputs can be assigned a different input gain, assuring optimum performance regardless of the source. For use with a calibration tone, the Dolby reference point is indicated by an enlarged tick mark on the Input Level meters.

The MC-1 GAIN function can be set to AUTOMATIC to monitor the analog input level and automatically optimizes the input gain. If the signal level is too high, input gain is automatically decreased to a point which does not cause clipping. When the signal level remains low (>12dB below clipping for 2.5 minutes), the input gain is increased in 1dB steps to maximize dynamic range.

When MANUAL is selected, the display shows the last auto level setting. (If the auto level feature has not been used, the display shows the last manually entered level.) The auto level setting indicates the optimum input level value as determined by the unit. The ▲ and ▼ buttons increase or decrease the input gain in 1dB increments for the selected input over a range of -18dB to +12 dB. The setting is displayed in dB along with horizontal bargraph meters on the on-screen display to indicate incoming signal level.

Note that if a level is set manually, then AUTOMATIC is engaged, the level will not go above the last value entered manually.

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