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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 ysubs 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 dene 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 ysub/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 ysubs. 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 amplier, 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 conrmed through accurate measurements in-situ.
LIST OF PRESETS
From rmware version 20200826, IA 402D ampliers include the following presets to work with dierent
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 conguration to use with other passive
subwoofers. -
General Flat General conguration 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 specied in the table.
Factory presets provide natural sound and even frequency response between products in the
close distance.
