BACK
Fabric
Wrapped Acoustical Panel CSI Specifications
A The Fabric Wrapped Acoustical Panel shall
be the BAD™ Panel as manufactured by RPG® Diffusor Systems, Inc.
B The Fabric Wrapped Acoustical Panel shall
be fabricated from molded fiberglass cores covered with a rigid template. Edges
shall be square and plum to within a tolerance of 1/16". The Fabric Wrapped
Acoustical Panel shall be of the thickness and sizes specified.
C Fiberglass cores shall have a minimum
density of not less than 6lbs/ft cubed (or specify other desired density).
D Provide mechanical clip mounting system
(or specify other desired mounting such as construction adhesive or hook and
loop fasteners) as per manufacturer’s recommendations.
E Absorption Coefficients and Noise Reduction
Coefficient for the product shall be measured by an independent, accredited
NVLAP facility according to the test methods as defined by ASTM C 423 and ASTM
E 795. Random incidence Absorption Coefficients for a 1" thick, 6lbs/ft cubed
density product in a Type A mounting shall be as follows:
| 125Hz |
250Hz |
500Hz |
1000Hz |
2000Hz |
4000Hz |
NRC |
| 0.07 |
0.30 |
1.00 |
1.19 |
1.03 |
0.91 |
0.80 |
F Diffusion Coefficients for the product shall
be measured in accordance with the recommendations of the Audio Engineering Society
Working Group SC-04-02 boundary measurement technique. The directional diffusion
coefficient is given by the standard deviation of the 1/3-octave polar response,
for a given angle of incidence, and normalized by the response of a flat panel
of similar size. The average incidence diffusion coefficients determined at 5°
intervals between ± 85° are listed below at octave-band centers. The
mean and standard deviation (SD) of the 1/3 octave-band coefficients are also
tabulated.
| 1000Hz |
2000Hz |
4000Hz |
8000Hz |
16000Hz |
MEAN |
SD |
| 0.61 |
0.51 |
0.42 |
0.43 |
0.38 |
0.47 |
0.09 |
G Flame Spread and Smoke Developed shall be
tested by an independent, accredited NVLAP facility according to the test methods
as defined by ASTM E 84 and NFPA 255. The BAD™ Panel shall have a composite
Flame Spread Rating of less than 25 and a Smoke Development of less than 450.
H The Fabric Wrapped Acoustical Panel shall
be supplied in a Guilford of Maine FR701 fabric, color to be as specified.
I The overall dimensions shall be 1' 11-5/8"(H)
x 1' 11-5/8"(W) x 1"(D) (specify other dimensions if desired) and weigh no more
than 4 pounds.
BACK