Data Sheet

ENGINEERING DATA SHEET
Primacoustic is a division of Radial Engineering Ltd. • 1845 Kingsway Ave. Port Coquitlam BC V3C 1S9 • Tel: [phone] Fax: [phone]
www.primacoustic.com • [e-mail] • Primacoustic Engineering Data Sheet • Part #R870 2200 00 • Copyright © 2016 • Subject to change without notice.
CUMULUS
ORDER NUMBER Z840-1210-XX (xx denotes color code 00=Black; 03= Beige; 08=Grey)
DIMENSIONS 24" (610mm) x 24" (610mm) x 24" (610mm)
PANEL DEPTH 2" (51mm)
CORE MATERIAL
DENSITY
Formed, semi-rigid inorganic glass bers, 6.0 lbs pcf (96 kg/m3)
WEIGHT 1.65 lbs / .75 kg
FABRIC FACING Acoustically transparent polyester
BACKING Sealed with acoustically transparent micromesh
EDGE TREATMENT Reverse bevel edge. Sealed and hardened with resin
RECYCLED CONTENT Up to 51%
LEED ELIGIBLE Yes
SPECIFICATIONS:
* Testing performance based on Broadway panel test results and 1/4 wavelength calculations.
PANEL DEPTH 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz
2" (51mm) Depth 1.23 1.15 1.24 1.2 1.14 1.11
ABSORPTION CHARACTERISTICS:*
Sound absorption coefcient data
The Cumulus™ is a triangular broadband acoustic corner trap that
effectively absorbs sound energy from 100Hz and up. Designed to t in
corners where the wall and ceiling meet, the Cumulus takes advantage of
the natural propagation of sound that occurs in all rooms. Sound waves
follow the wall and ceiling planes and accumulate in the corners, a well
known hot spot in small rooms.
The Cumulus is amazingly compact yet when in place, creates a 12" deep
cavity behind the panel that increases the bass absorption characteristics.
Mounting Cumulus traps in a room will generally yield a signicant
reduction in the problematic low-mid (100Hz - 200Hz) region while leaving
the architectural design of the room virtually intact.
Invisible mounting is achieved using spring-tensioned cleats and a single
eye-screw. Mounting literally takes minutes and because of the reverse
beveled edges Cumulus traps ush mount seamlessly into the room
esthetics. The Cumulus is available in 3 colors: black, grey and beige.
Sold in pairs.
2"
(51mm)
24" (610mm)
12"
(305mm)
APPLICATION:
MOUNTING:
Mounting is accomplished with spring tensioned cleats and a single
eye-scew.
125 Hz 150 Hz 200 Hz 250 Hz 300 Hz 350 Hz 400 Hz 450 Hz 500 Hz 550 Hz 600 Hz 700 Hz 800 Hz 900 Hz 1 kHz 2 kHz 3 kHz 4 kHz
0.1
0.0
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
Sound Absorption Coefficient
Frequency
FIRE & BURN PERFORMANCE:
COUNTRY TEST STANDARD CLASSIFICATION
Canada CAN/ULC-S102-03 Class A/1
USA ASTM E84-09 Class A/1
Europe EN 13501-1 A2-s1, d0
Australia / New Zealand AS/NZS 1530.3 (I)0, (S)0, (H)0, (Sm)5