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D
7
6
USE WITH
L 35 FS/R
L 35 FS/R allow to extend the low frequency range of L 35 or L 35 R line arrays and for that, IA 402D can
power up to two flysubs per channel. As shown before, there are two presets for L 35 FS/R: one to use
indoor with L 35 and, other to use outdoor with L 35 R.
These presets set the optimal crossover frequency between both systems but, in order to define the
balance of the total response, the gain of each way must be set as desired. Values below are a right basis
for further adjustments:
Pieces of L 35 FS
Pieces of L 35/R
L 35/R Gain
L 35/R Preset
1
2
-6 dB
2L35Sat/R
2
2
0 dB
2L35Sat/R
2
4
-6 dB
4L35Sat/R
In all those cases, L 35 FS gain is 0 dB, IA 402D Input Sensitivity is +4 dBu and the preset for each channel
powering L 35 FS flysub/s is L 35FS+Sat/R.
Some applications may comprise additional ground-based subwoofers to reproduce frequencies below
the range of L 35 FS/R flysubs. A good starting point for that adjustment would be:
Pieces of L 35 FS
Pieces of L 35/R
L 35 FS/R Gain
L 35/R Gain
1
2
0 dB
-3 dB
2
2
-3 dB
0 dB
2
4
0 dB
-3 dB
Additionally in the IA 402D amplifier, an Input Sensitivity of +4 dBu must be set and, a delay of 2.1 ms
should be applied to the L 35/R and L 35 FS/R channels, in order to align in time the array and the
additional subwoofer/s. This time alignment should be confirmed through accurate measurements in-situ.
LIST OF
PRESETS
From firmware version 20200826, IA 402D amplifiers include the following presets to work with different
SE AUDIOTECHNIK® products:
Product
Preset Name
Description
Units per channel
IC 32
IC 32
For powering up to
four
IC 32 columns.
1 - 4
IC 34
IC 34
For powering up to
two
IC 34 columns.
1 - 2
IC 38
IC 38X
For powering IC 38X columns.
1
L 35
2L35Sat
For array of up to
two
L 35 units, used indoor as
"satellite" and with additional subwoofer.
1 - 2
4L35Sat
For array of up to
four
L 35 units, used indoor as
"satellite" and with additional subwoofer.
3 - 4
8L35Sat
For array of up to
eight
L 35 units, used indoor
as "satellite" and with additional subwoofer.
3 – 4
(2 channels needed)
2L35FR
For indoor array of up to
two
L 35 units
full-range, without subwoofer.
1 - 2
4L35FR
For indoor array of up to
four
L 35 units
full-range, without subwoofer.
3 - 4
8L35FR
For indoor array of up to
eight
L 35 units
full-range, without subwoofer.
3 – 4
(2 channels needed)
L 35 R
2L35R
For outdoor array of up to
two
L 35 R units.
Additional subwoofer usage is recommended.
1 - 2
4L35R
For outdoor array of up to
four
L 35 R units.
Additional subwoofer usage is recommended.
3 - 4
8L35R
For outdoor array of up to
eight
L 35 R units.
Additional subwoofer usage is recommended.
3 – 4
(2 channels needed)
L 35 FS
L35FS+Sat
For up to
two
L 35 FS used in L 35 line arrays
indoor.
1 - 2
L 35 FS R
L35FS+R
For up to
two
L 35 FS R used in L 35 R line arrays
outdoor.
1 - 2
Subwoofer
Sub
General configuration to use with other passive
subwoofers.
-
General
Flat
General configuration to use with other
products or as a base for custom user presets.
-
Use each of these presets only with the corresponding product stated.
And do not connect more units to each IA 402D channel than those specified in the table.
Factory presets provide natural sound and even frequency response between products in the
close distance.
