Manufacturer

BVS Akustik

BVS Akustik GmbH & Co. KG from Verl (East Westphalia) has been active in the furniture industry since 1990 and produces custom acoustic panels with CNC saws, purpose-built drilling lines and an in-house laser system. Almost all board materials are processed: solid wood, veneered, composite and decor boards, each cut, edge-finished and lacquered to the customer's specification. The range covers drilled (AKUSTIbohr), micro-perforated (AKUSTIpur), slotted (AKUSTIpan) and sound-absorbing partition elements (AKUSTItrenn), each in numerous hole patterns and build-up depths. The elements are available in fire classes B1 and B2 and, for sports halls, with certified ball-impact resistance. References include Princeton University, NYU and the Emser Therme.

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AKUSTIbohr Acoustic Panel

AKUSTIbohr

WallCeiling

Description

AKUSTIbohr is the BVS classic: a drilled acoustic panel made from almost any board material, whether solid wood with lively grain, veneered, composite or decor board. Drilling is based on a 32 mm grid, which allows a wide range of hole diameters, grids and hole patterns with clean hole edges and, on request, perforation on one side only. Cutting, edge margins, edge finishing and lacquering follow the specification for each project; with 8 mm perforation, concealed screw fixing with special dowels is possible. Acoustically, the panel only becomes effective through the interplay of perforation and the build-up behind it: acoustic fleece, insulation and an air gap behind the perforated panel form an absorber whose frequency response can be tuned through the hole pattern. Sound absorption is determined per hole pattern in the reverberation room to EN ISO 354 and rated to EN ISO 11654; for design work the full third-octave curve matters alongside the single-number rating. AKUSTIbohr is available in fire classes B1 and B2 and with certified ball-impact resistance for sports halls.

Technical data

Material: Carrier board of choice: solid wood, veneered, composite or decor boards; drilled perforation (clean hole edges, can also be perforated from one side)
Up to fire class: B1 and B2 per DIN 4102 / DIN EN 13501-1 (depending on the board material)
Application: Wall and ceiling cladding in offices, sports, education, culture and residential buildings

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 20 variants

Choose the look

Choose the hole pattern · Ø / pitch in mm · stepped bore “4-8”: 4 mm front, 8 mm rear

NRC
0.85

Frequency values

αp per octave band

f (Hz)1252505001k2k4k
αp0.300.900.900.800.800.85

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Test report: 12648

NRC: 0.85 (derived from ISO 354 lab data)

Institute: Swisscom (Schweiz) AG, Test Laboratory STS 121

Measurement date: 2008-05-06

Application: 20/0.6 in material thickness, acoustic fleece, 1.2 in insulation, 140/5.7 in air gap

Distance: h=7.5 in · 140/5.7 in air gap

Perforation: 4/8/8/P · 19,6 %

Terms of use
Measured values as a table (20 measurements)
AKUSTIbohr Acoustic Panel: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upNRC100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1000 Hz1250 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz
1,2-5/8/8/P · h=190 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.450.280.460.530.780.740.740.610.490.430.360.330.270.230.190.170.170.160.15
12/32/32/P · 11,0 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.550.270.370.500.770.730.730.690.600.550.490.470.490.470.460.460.510.630.80
3/8/8/P · h=50 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.800.100.200.220.590.730.881.021.071.070.970.890.760.680.600.510.510.500.55
4/10,67/10,67/P · h=100 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.700.250.230.520.660.600.690.720.720.760.730.720.710.700.680.740.730.820.87
4/10,67/10,67/P · h=200 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.650.310.270.660.650.640.690.650.640.660.660.620.680.690.690.670.690.690.67
4/10,67/10,67/P · h=300 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.650.470.370.610.590.570.690.670.640.640.650.720.680.700.690.690.670.680.67
4/8/8/P · 19,6 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.850.220.280.430.830.940.990.950.920.810.760.770.820.820.840.810.830.870.88
4-10/16/16/P · h=100 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.700.190.230.500.720.750.931.011.010.950.790.630.520.440.420.420.370.380.42
4-10/16/16/P · h=200 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.700.370.330.891.020.960.950.890.780.710.610.560.550.490.440.360.310.270.23
4-10/16/16/P · h=300 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.650.550.470.980.860.830.850.770.680.660.720.660.580.520.430.380.300.280.23
4-12/16/16/P · 4,9 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.650.230.340.470.860.850.940.860.730.660.610.600.570.480.420.380.360.290.26
4-8/16/16/P · h=100 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.700.200.200.500.670.690.900.880.880.850.790.680.570.490.460.480.430.440.47
4-8/16/16/P · h=200 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.650.420.340.810.830.840.860.740.730.710.600.590.600.540.500.420.390.330.28
4-8/16/16/P · h=300 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.650.580.520.820.730.730.810.760.680.640.700.670.590.550.490.450.370.330.28
5-9/16/16/P · h=50 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.850.120.200.240.570.680.770.940.980.980.980.990.930.870.780.710.660.570.59
6/16/16/P · 11,0 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.700.240.310.380.840.891.020.950.870.750.640.610.660.560.490.430.430.420.46
6/16/8/V · 22,0 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.850.220.310.450.860.891.040.970.930.840.750.750.790.790.800.860.840.900.93
6-10/16/16/P · h=100 mm · with 30 mm insulation · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.700.210.290.410.500.680.871.000.890.750.700.640.580.590.570.580.510.490.46
8/16/16/P · 19,6 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.800.240.290.420.840.940.980.930.820.740.670.690.750.740.770.770.780.830.90
8/32/32/P · 4,9 % · h=190 mm · 140/144 mm air gap · 20/16 mm material thickness, acoustic fleece, 30 mm insulation, 140/144 mm air gap0.400.300.460.520.660.600.550.470.370.340.280.280.280.270.270.310.300.340.44
Measured values as a table (20 measurements)

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References

Completed projects with AKUSTIbohr