MA 200 2D creates in combination with chosen Creation Panel square separate diffuser modules, that diffuses in two dimensions. By aid of known number theory the MA modules are placed at different depth and creates a diffuser inside a diffuser. The advantage with this construction, that can be compared to a 2-way loudspeaker with a dividing filter at 1200 Hz, is that narrow deep compartments are avoided and that the periodical effects are minimised ( different number series can be mixed))
The separate modules are delivered with or without 16mm partition walls.
The MA 200 2D is delivered with or without bass absorption, which make them unique on the world market. The bass absorption is carried out effectively with the Helmholtz principle. Since the volume behind chosen MA module varies a broad banded bass absorption with a high absorption coefficient (>0,7) is obtained. The lowest frequency for absorption is determined by the chosen maximum depth of the MA module. The lowest grade of diffusion is determined by the total width in combination with the maximal depth.
Large areas can be diffused (for example concert halls).
Narrow and deep compartments are avoided which brings low absorption in the area that are to be diffused.
Different Creation panels are available
Since each module is free standing it is possible to place the partition walls between an optional number of MA200 2D modules
Possibilities to adjust the bass absorption upper limit to the lower frequency limit of the diffusers
Variable acoustics can be obtained by AC 200
Cost efficient
Different alternatives to MA200 2D
Creation Panel
TP 200, AD30, AD40, SP 200
AC Modules
AC 200
Specifications:
Diffuser range: 150-16000 Hz (at maximum depth 1800
mm)
Width/module = 224 mm
length/module = max 224 mm
Standard depth = 400 mm
Other depths = 300-1800 mm
Weight/module = 8-20 Kg/m
Standard foil = white, birch or oak
As option most wood foils are available
Absorption coefficient for 4 MA 200 2D Helmholtz 0.4 m max depth
Hz Absorption coefficient
50....... 0.5
63....... 0.7
80 .......0.80
100..... 0.80
125..... 0.78
160 .....0.80
200..... 0.82
250..... 0.70
400 .....0.33
500..... 0.34
1000... 0.20
2000... 0.24
4000 ...0.22
The diffusion coefficient is depending of chosen number
serie (Schröder, Hoffman, primitive root)