Lexicon
24
System
Configuration
Center
Systems that utilize a full-range center speaker should select LARGE to
direct center information to the center output with a full frequency
response. Select SMALL for installations where the center speaker is
smaller than the left and right front speakers. This will automatically
engage the Bass Split feature which takes the low frequency content
from the center, and distributes it to the left and right front speakers,
reducing the risk of damage to a small center speaker without loss of
bass information. When SMALL is highlighted, press SELECT to display
and adjust the crossover point for the low frequency redistribution.
Available crossover points are: 40, 80 and 120Hz. Press DONE to return
to the Speaker Configuration menu.
Sides
This menu sets the system for your particular side speaker configura-
tion. Systems with side speakers should be designated as STANDARD
(LARGE or SMALL) or DIPOLE (LARGE or SMALL). When STAN-
DARD SMALL or DIPOLE SMALL is highlighted, press SELECT to
display and adjust the highpass filter for the side outputs. Choices are
40, 80 or 120Hz. For any 5.1 channel inputs, selecting SMALL routes the
low frequency information to the subwoofer output.
Selecting NONE mutes the side outputs and directs all surround
information to the rear outputs.
Rears
The active selections are LARGE and SMALL. Systems that utilize full-
range rear speakers should select LARGE to direct a full-range signal
to them. SMALL should be selected when filtering is desired. (40, 80 and
120Hz are available as settings for the -3dB point). For any 5.1 channel
inputs, selecting SMALL routes the low frequency information to the
subwoofer output.
Selecting NONE mutes the rear outputs and directs all surround
information to the side outputs.
10
100
50
20
2k
1k
500
200
5k
10k
dBr
Hz
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
Bass Split rolls off frequencies at 12dB per
octave. The values given are at the -3dB point
of attenuation from the center speaker.
NOTE: When SIDE STANDARD
and REAR speakers are selected,
the output level of the side chan-
nels is decreased slightly while the
output level of the rear channels is
increased slightly. This helps pre-
vent the side speakers from over-
powering the rear speakers.
NOTE: In software Version 4, when
SIDE and REAR speakers are se-
lected, the following changes are
automatically made to THX 5.1 and
DTS THX effects:
• SURROUND EX is set to ON
• "EX" is added to the effect name
(for example, "THX 5.1 EX")
