Lexicon SDP-40 - Manual (Page 59)

3-26
The SETUP Menu
JBL
LEVELS CALIBRATION
Properly calibrated output levels are critical. Setting output levels is
a simple procedure using a Sound Pressure Level (SPL) meter. This
device measures the relative loudness of the speakers so that
output levels can be calibrated accurately. An SPL meter can be
purchased at Radio Shack (catalog no. 33-2050).
To ensure the most accurate calibration levels:
• Eliminate extraneous noises in the listening space, such as
conversation, air conditioners, and sounds that filter in from
open doors and windows.
• Remove objects (including people) that obstruct the
line-of-sight path between the SPL meter and the speaker
being measured.
• Measure output levels from the primary listening position,
placing the SPL meter at the approximate spot where the
listener’s head will be during listening.
INTERNAL NOISE TEST
Selecting either INTERNAL NOISE TEST or DACS CALIBRATION
accesses the SPEAKER LEVEL ADJUST menu
(pictured above). When INTERNAL NOISE
TEST is selected, a cautionary message
(pictured at the right) will appear on the
screen. This serves as a reminder that the INTERNAL NOISE TEST
generates loud calibration noises. When the message appears,
press the right MENU arrow to proceed to the SPEAKER LEVEL
ADJUST menu. Press the left MENU arrow to return to the LEVELS
CALIBRATION menu.
As the INTERNAL NOISE TEST is conducted, a noise signal will
move from output to output following the order on the SPEAKER
INTERNAL NOISE
!CAUTION!
HIGH AUDIO LEVELS
LEVELS CALIBRATION
INTERNAL NOISE TEST
DACS CALIBRATION
SUB LIMITERS
SPEAKER SETUP
CUSTOM SETUP
SYNTHESIS 7CH SETUP
SPEAKER DISTANCES
LEVELS CALIBRATION
SPEAKER LEVEL ADJUST
FRONT LEFT +0.0dB
CENTER +0.0dB
FRONT RIGHT +0.0dB
SIDE RIGHT +0.0dB
REAR RIGHT +0.0dB
REAR LEFT +0.0dB
SIDE LEFT +0.0dB
SUB (MONO) * +0.0dB
SUB RIGHT +0.0dB
LFE SUB +0.0dB
SETUP
INPUTS
SPEAKERS
REAR PANEL CONFIG
DISPLAYS
VOLUME CONTROLS
TRIGGERS
LOCK OPTIONS
MAIN MENU
MODE ADJUST
AUDIO CONTROLS
SETUP
0.0dB
M
SUB L
0.0dB
C
0.0dB
R
0.0dB
SR
0.0dB
0.0dB
SL
0.0dB
RR
0.0dB
RL
Note:
Front panel and remote control buttons - except the MENU
button and MENU arrows - will not function while the
SPEAKER LEVEL ADJUST menu is selected. All buttons will
regain functionality when the menu is exited.
SETUP SPEAKERS LEVELS CALIBRATION
When SUB L/R is set to
STERE0 or NONE (see page
3-22), the SUB MONO
parameter will appear as
SUB LEFT. *