SDP-3 Digital Surround Processor/Controller
S
ystem
Configuration
25
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 SDP-
3. 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. When
used with ALL JBL Synthesis systems, this setting should be on yes.
THX Configuration
Selecting THX SPEAKER CONFIG from the SPEAKER SETUP menu
automatically sets the speaker selections to the appropriate configura-
tion for 5.1-channel THX listening. This setting is not recommended for
7.1-channel configuration. This configuration is not adjustable.
Setting Output Levels
When SDP-3 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 SDP-3’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 +6dB
LAST LVL, -80 to +12dB
▲
▼
Adjust with or
+15dB
-30dB
-30dB
-30dB
OUTPUT LEVELS MENU
Select INTERNAL NOISE TEST or EXTERNAL NOISE TEST from the
Output Levels menu.
The INTERNAL NOISE TEST disables any EQ functions, centers the
Balance and Fader controls, and sets the system volume to +00dB. The
test signal circles the room according to the speaker configuration you
have defined in the Speaker Configuration menu. For a full complement
of speakers, the order is: Left Front, Center, Right Front, Right Side, Left
Side, Subwoofer, Right Rear, Left Rear.
SETUP MENU
INPUT CONFIG
SPEAKER CONFIG
OUTPUT LEVELS
LISTENER POSITION
LOCK SETTINGS
SPEAKER SETUP MENU
CUSTOM CONFIG
THX SPEAKER CONFIG
