Lexicon DC-2 - Manual (Page 33)

25
DC-2 Digital Controller
System
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 fre-
quencies 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 performed in the digital
domain. You can select four different crossover points (OFF, 40, 80 or
120Hz) for the subwoofer. Although you can bypass the crossover and run
a full range output if your subwoofer has an internal crossover, it is
generally best to use the crossover in the DC-2.
NO mutes the subwoofer output and disables the Subwoofer Level param-
eter. For any 5.1 channel input, selecting NO routes the LFE (.1 channel) to
any front speaker set to LARGE.
Selecting THX CONFIG from the SPEAKER SETUP menu automatically
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. This configuration is not adjustable.
Selecting SURROUND EX from the SPEAKER SETUP menu (available only
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.
THX Configuration
When DC-2 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
DC-2’s internally generated calibration signal, adjust the level of each
output to the same relative level (75dB).
Setting
Output Levels
SETUP MENU
INPUT CONFIG
SPEAKER CONFIG
OUTPUT LEVELS
LISTENER POSITION
LOCK SETTINGS
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
SPEAKER SETUP MENU
CUSTOM CONFIG
THX CONFIG
SURROUND EX CONFIG
SURROUND EX
Configuration
SPEAKER SETUP MENU
CUSTOM CONFIG
THX CONFIG
SURROUND EX CONFIG