Ceiling raft LMD-DS 320
Sabins/unit 7.5–38 at 1 kHz
Manufacturer
Lindner Group
Lindner Group, Arnstorf: metal ceilings, heating and cooling ceilings, raised floors, wall and ceiling linings and the MUTE+ sound absorber line.
Description
Metal ceiling raft as an individual module suspended freely in the room, with tool-free inspection access. Between the rafts, the structural shell remains accessible for luminaires and services. The absorption results from perforation, acoustic fleece and an optional acoustic insert. Recycled content 24.6 percent.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 14 variants
Frequency values
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| Compare | Value | ||||
|---|---|---|---|---|---|
| Rd 1.6 - 25 | 16 in | ceiling raft 94 x 47 in | 0.79 in Acustica | Sabins/unit38 | |
| Rd 1.6 - 25 | 7.9 in | ceiling raft 94 x 47 in | 0.79 in Acustica | Sabins/unit33 | |
| Rd 1.6 - 25 | 16 in | ceiling raft 71 x 47 in | 0.79 in Acustica | Sabins/unit28 | |
| Rg 0.8 - 5 | 7.9 in | ceiling raft 94 x 47 in | 0.79 in Insula B2 / Acustica | Sabins/unit27 | |
| Rd 1.6 - 25 | 7.9 in | ceiling raft 71 x 47 in | 0.79 in Acustica | Sabins/unit26 | |
| Rg 0.8 - 5 | 7.9 in | ceiling raft 94 x 47 in | — | Sabins/unit22 | |
| Rd 1.6 - 25 | 16 in | ceiling raft 47 x 47 in | 0.79 in Acustica | Sabins/unit19 | |
| Rd 1.6 - 25 | 7.9 in | ceiling raft 94 x 47 in | — | Sabins/unit18 | |
| Rd 1.6 - 25 | 7.9 in | ceiling raft 47 x 47 in | 0.79 in Acustica | Sabins/unit17 | |
| Rd 1.6 - 25 | 16 in | ceiling raft 94 x 47 in | — | Sabins/unit16 | |
| Rg 0.8 - 5 | 7.9 in | ceiling raft 47 x 47 in | 0.79 in Insula B2 / Acustica | Sabins/unit15 | |
| Rg 0.8 - 5 | 7.9 in | ceiling raft 47 x 47 in | — | Sabins/unit12 | |
| Rd 1.6 - 25 | 7.9 in | ceiling raft 47 x 47 in | — | Sabins/unit9.7 | |
| Rd 1.6 - 25 | 16 in | ceiling raft 47 x 47 in | — | Sabins/unit7.5 |
Test report: H231016P1/1b_rev00
Institute: GiB mbH, Arnstorf
Measurement date: 10/16/2023
Room volume: 7,363 cu ft
Test setup: ceiling raft 94 x 47 in
Absorber: 0.79 in Acustica
Measured values as a table (14 measurements)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rd 1.6 - 25 · 16 in · ceiling raft 47 x 47 in (sabins/unit) | – | 1.1 | 5.4 | 6.5 | 7.5 | 11 | 11 | 8.6 | 5.4 | 7.5 | 8.6 | 7.5 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 9.7 | 11 |
| Rd 1.6 - 25 · 7.9 in · ceiling raft 47 x 47 in (sabins/unit) | – | – | – | – | 9.7 | 12 | 15 | 18 | 19 | 20 | 18 | 17 | 19 | 19 | 18 | 19 | 19 | 19 | 19 |
| Rd 1.6 - 25 · 7.9 in · ceiling raft 94 x 47 in (sabins/unit) | – | – | – | 17 | 18 | 22 | 27 | 36 | 37 | 38 | 36 | 33 | 38 | 39 | 36 | 36 | 34 | 34 | 34 |
| Rd 1.6 - 25 · 16 in · ceiling raft 94 x 47 in (sabins/unit) | – | 4.3 | 6.5 | 11 | 16 | 20 | 22 | 16 | 12 | 13 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 18 | 18 |
| Rg 0.8 - 5 · 7.9 in · ceiling raft 47 x 47 in (sabins/unit) | – | 1.1 | 3.2 | 5.4 | 7.5 | 11 | 14 | 15 | 17 | 17 | 15 | 15 | 18 | 17 | 17 | 17 | 16 | 14 | 12 |
| Rg 0.8 - 5 · 7.9 in · ceiling raft 94 x 47 in (sabins/unit) | – | 3.2 | 6.5 | 9.7 | 14 | 20 | 25 | 28 | 33 | 32 | 29 | 27 | 32 | 33 | 33 | 32 | 31 | 30 | 30 |
| Rg 0.8 - 5 · 7.9 in · ceiling raft 94 x 47 in (sabins/unit) | – | 4.3 | 7.5 | 9.7 | 15 | 20 | 26 | 26 | 28 | 29 | 25 | 22 | 24 | 25 | 23 | 24 | 24 | 26 | 27 |
| Rg 0.8 - 5 · 7.9 in · ceiling raft 47 x 47 in (sabins/unit) | – | 2.2 | 4.3 | 6.5 | 8.6 | 9.7 | 13 | 14 | 15 | 15 | 13 | 12 | 13 | 12 | 12 | 13 | 13 | 14 | 15 |
| Rd 1.6 - 25 · 7.9 in · ceiling raft 94 x 47 in (sabins/unit) | – | – | – | – | – | 13 | 16 | 22 | 25 | 27 | 23 | 18 | 19 | 23 | 19 | 20 | 20 | 19 | 20 |
| Rd 1.6 - 25 · 7.9 in · ceiling raft 71 x 47 in (sabins/unit) | – | – | – | 13 | 15 | 17 | 17 | 27 | 29 | 30 | 27 | 26 | 29 | 29 | 28 | 28 | 26 | 26 | 28 |
| Rd 1.6 - 25 · 16 in · ceiling raft 71 x 47 in (sabins/unit) | – | – | 12 | 18 | 19 | 22 | 19 | 24 | 22 | 28 | 29 | 28 | 30 | 29 | 30 | 30 | 30 | 30 | 33 |
| Rd 1.6 - 25 · 7.9 in · ceiling raft 47 x 47 in (sabins/unit) | – | – | – | – | 6.5 | 7.5 | 9.7 | 11 | 13 | 14 | 12 | 9.7 | 12 | 12 | 11 | 11 | 11 | 11 | 11 |
| Rd 1.6 - 25 · 16 in · ceiling raft 94 x 47 in (sabins/unit) | – | – | 12 | 26 | 26 | 26 | 26 | 30 | 28 | 36 | 38 | 38 | 38 | 39 | 39 | 40 | 39 | 40 | 43 |
| Rd 1.6 - 25 · 16 in · ceiling raft 47 x 47 in (sabins/unit) | – | – | – | 9.7 | 13 | 14 | 15 | 15 | 14 | 17 | 19 | 19 | 20 | 20 | 19 | 22 | 22 | 20 | 23 |
Measured values as a table (14 measurements)
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