Lexicon MC-1 - Manual (Page 33)

25
MC-1 Digital Controller
S ystem
Configuration
10 100 50 20 1k 500 200
dBr
Hz
+1.000
0.0
-1.000
-2.000
-3.000
-4.000
-5.000
-6.000
-7.000
-8.000
-9.000
-10.00
-11.00
-12.00
-13.00
-14.00
-15.00
-16.00
-17.00
-18.00
Subwoofer Frequency Response
The low pass filter attenuates high frequencies
at 24dB per octave. The values given are for the
6dB point.
Subwoofer Output
Use of the subwoofer output is specified here. Selecting YES, then
pressing SELECT allows you to display and adjust the crossover
frequency for the subwoofer output. All summing and filtering is per-
formed in the digital domain. You can select three different crossover
points (40, 80 or 120Hz) for the subwoofer. Although you can bypass the
crossover (OFF) and run a full range output if your subwoofer has an
internal crossover, it is generally best to use the crossover in the
MC-1.
NO mutes the subwoofer output and disables the Subwoofer Level
parameter. For any 5.1 channel input, selecting NO routes the LFE
(.1 channel) to any front, side or rear speakers set to LARGE.
THX Configuration
Selecting THX CONFIG from the SPEAKER SETUP menu automati-
cally sets the speaker selections to the traditional configuration for THX
listening. This configuration automatically sets REARS to NONE and all
of the filters to 80Hz. These settings are not adjustable.
SURROUND EX Configuration
Selecting SURROUND EX from the SPEAKER SETUP menu (available
in software Version 4) automatically sets the speaker selections for a
THX SURROUND EX setup with two side and two rear speakers, and
with all filters set to 80Hz. These settings are not adjustable.
Setting Output Levels
When MC-1 input and output levels are set properly, the entire system
will be calibrated to play films at the level intended by the director.
Setting the output levels is easy with a Sound Pressure Level (SPL)
meter. Using the MC-1’s internally generated calibration signal, adjust
the level of each output to the same relative level (75dB "C" weighting).
INTERNAL NOISE TEST
EXTERNAL NOISE TEST
SUB PEAK LIMIT
MUTE LEVEL
PWR-ON VOL
Z-2 PWR-ON Noise signal sent sequentially to all speakers
Pro Logic effect w/current input as source
-5 to +35dB
-10dB, -20dB, -30dB, -40dB, FULL MUTE
LAST LVL, -80 to +12dB
LAST LVL, -80 to +12dB
▲ ▼
Adjust with or
+15dB
-30dB
-30dB
-30dB
OUTPUT LEVELS MENU
SETUP MENU
INPUT CONFIG
SPEAKER CONFIG
OUTPUT LEVELS
LISTENER POSITION
LOCK SETTINGS
SPEAKER SETUP MENU
CUSTOM CONFIG
THX CONFIG
SURROUND EX CONFIG
SPEAKER SETUP MENU
CUSTOM CONFIG
THX CONFIG
SURROUND EX CONFIG