Manufacturer

alpha AKUSTIK

alpha AKUSTIK is the acoustics brand of Staudigel GmbH from Veitshöchheim — a family business with over 70 years of experience in wood processing. On around 7,500 m² of production area the company manufactures sound-absorbing perforated, slotted and micro-perforated panels (NANOLITE) on an MDF base for wall and ceiling. The panels are built up with a backing acoustic fleece (SoundTex) and mineral insulation into acoustically effective claddings. The range spans from discreetly perforated visible surfaces to highly absorbent slot-and-hole patterns and is broadly documented by accredited reverberation-chamber measurements (Fraunhofer IBP, BAE Fiedler, ita).

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alpha AKUSTIK Slotted Panel (Inner Groove)

Name: alpha AKUSTIK Slotted Panel (Inner Groove)
Brand: alpha AKUSTIK

ALPHA-AKUSTIK Slotted Panel (inner groove 20/N10) & WAVY

WallCeiling

Description

The slotted acoustic panel of the inner-groove type (20/N10) by alpha AKUSTIK: an MDF panel with narrow visible slots and a rear groove, backed with acoustic fleece. The fine line look stays calm while the rear groove enlarges the sound-absorbing area. Tunable via slot pattern (e.g. 20/N10-16-2) and backing, from medium to very high absorption. This range also includes the three-dimensional WAVY wall lining.

Technical data

Material: MDF carrier board with a rear inner groove and SoundTex acoustic fleece; backed with mineral wool (Rockwool Sonorock) or an air gap

Surface: slotted (visible slots), rear inner groove; raw, veneered or coated; WAVY as a three-dimensional surface

Application: sound-absorbing wall and ceiling lining; also as a closed element and cabinet door

Certifications: Accredited reverberation-chamber measurements per DIN EN ISO 354 (evaluated per DIN EN ISO 11654): Fraunhofer Institute for Building Physics (IBP, Stuttgart), BAE Fiedler (Lahnau), ita Ingenieurgesellschaft (Wiesbaden) and test centre STS 121 (CH)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 29 variants

Choose perforation

NRC

0.85

Frequency values

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.25	0.70	1.00	0.90	0.70	0.80

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Compare		Value
	1.6 in Sonorock	NRC0.85
	1.6 in Sonorock + 5.5 in air gap	NRC0.90
	15 in air gap	NRC0.65

Test report: P-BA 193/2006

NRC: 0.85 (derived from ISO 354 lab data)

Institute: Fraunhofer Institute for Building Physics (IBP), Stuttgart

Measurement date: 2006-09-14

Perforation: 20/N10-10,66-2

Measured values as a table (29 measurements)

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Last updated: 09/14/2026