Performance and Testing
Construction and Design
Each Rebel Sky Acoustics diffuser panel is meticulously crafted from 100% California Redwood, featuring a proprietary Quadratic 7 prime “skyline” diffractor. This advanced design is engineered to effectively target and neutralize problematic frequencies ranging from 2800Hz to 11kHz.
Acoustic Benefits:
The panels excel at eliminating unwanted echoes and reverberation, while preserving the clarity and integrity of sound produced by voices, instruments, amplifiers, or studio monitors. This ensures a pristine and balanced acoustic environment.
Certified Performance:
• Independently tested and certified by NWAA Labs and Riverbank Acoustical Labs.
• Validated for both Noise Reduction Coefficient (NRC) rating and diffusion efficacy, guaranteeing superior acoustic performance.
Rebel Sky Acoustics diffuser panels are designed and certified to deliver exceptional sound diffusion, making them an ideal choice for professional studios and acoustic spaces.
Testing Breakdown:
NWAA Labs, Inc -Ron Sauro
Address: 90 Tower Blvd. Elma, WA 98541
Phone: 253-973-1018
SOUND SURFACE REFLECTION TEST (Diffusion Testing)
The methods and procedures used in this test conform to the provisions and requirements of ASTM Preliminary Procedure, Standard Test Method for Surface Reflections by the Modified AES Standard AES-156.The test volume is a cuboid, 205.74 m (675.0 ft) long by 106.68 m (350.0 ft) wide by 18.29 m (60.0 ft) high, and volume is 401,391.3 m3 (14,175,000.0 ft3). There are six fixed surfaces in the test volume. There is a single source consisting of a SoundTube, 8inch speaker mounted in a pendant mount above the DUT on the microphone arc next to the #1 microphone about 3degree off to the side. We utilize nineteen Earthworks M-30 Omni directional microphones mounted in an arc, with the center of the arc located at the rotational origin of the DUT to gather the data. This test report relates only to the item(s) tested. Any advertisement that utilizes this test report or test data must not imply product certification or endorsement by NWAA Labs and must include all pages of the report.
DESCRIPTION OF TEST SPECIMEN
The test specimen consisted of one sample unit that is 121.92 cm (48.0 inch) long by 60.96 cm (24.0 inches) wide by 13.97 cm (5.5 inches) thick flat panel mounted in the DUT test position. These panel was made from a redwood material and stained. (See Pictures).
TEST RESULTS
Rated Bandwidth (-6Db): 2800Hz-11.0KHz
Coverage Angles (1.5KHz): 120 degree horizontally by 140 degree vertical
Material Construction: 4 ft by 2 ft (8 sq ft) redwood, stained.
Type of Surface Reflector: Quadratic 7 prime “skyline” diffractor
Product Imaging:
Phone: (630) 232-0104
Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method ASTM C423
Designation: Quadratic 7 prime “skyline” diffractor
Dimensions: 2.51 m x 2.51 m x 0.13 m Area: 6.32 m2
Weight 146.85 kg Mounting: A-Mount
Specimen Details: 4 panels 49.5"x49.5"x5"
Test Date: 2022-05-16
Test Conducted By: Riverbank Acoustical Laboratories - Test Interface: 1.3.3
Area Weight: 23.22 kg/m2 Edge Seal: No seal is used
Rebel Sky Acoustics diffuser panels have been meticulously tested and certified by the industry’s most respected acoustic testing laboratories, NWAA Labs and Riverbank Acoustical Labs. Renowned for their rigorous standards and expertise, these premier facilities have validated our panels’ exceptional performance, earning certifications for both Noise Reduction Coefficient (NRC) and diffusion efficacy. **NWAA Labs created the testing measures for identifying the effectiveness of acoustic panel sound diffusers.