Calculate First Reflections & Wall Absorber Positions

Wall absorber positions?

At what positions should wall absorbers be attached to mitigate early reflections?

The point ...

… at which the angle of incidence equals the angle of reflection of the sound on the walls is the same represents the suitable position for the wall absorbers. These remove the first reflections and thus improve the spatial sound. Additional absorbers before and after can help to further optimize the room acoustics.
 
Unit of measurement:
Decimal separator:
Room width (mm):
Valid range: 3000 - 12000 mm
Seating distance to the wall (mm):
Seating distance to the front wall.
Valid range: 2000 - 10000 mm
Seating distance to front speakers (mm):
Seating distance to the front speakers.
Valid range: 2000 - 10000 mm
Front speakers distance (mm):
Distance of the front speakers to each other
Valid range: 500 - 4000 mm
Note
Absorber position 1
Absorber position 2
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