Data Sheet

ENGINEERING DATA SHEET
Primacoustic is a division of Radial Engineering Ltd. • 1588 Kebet Way Port Coquitlam, BC V3C 5M5 • Tel: [phone] Fax: [phone]
www.primacoustic.com • [e-mail] • Primacoustic Engineering Data Sheet • Part #R870 2200 00 • Copyright © 2016 • Subject to change without notice.
The FullTrap™ is a combination broadband absorber and bass trap that
is mounted on a wall surface to control excessive bass in a room. This
is achieved by combining three acoustical principles into a single device.
To handle mid-range and upper frequencies, a 3” thick front absorptive
panel made from 6 lbs. per cubic foot high-density encapsulated glass
wool is employed. Behind the acoustic panel is a diaphragmatic dense-
mass membrane that acts as a low frequency resonator to absorb bass
below 75Hz. Behind the membrane is an air cavity that is created by the
wood composite enclosure which serves to further attenuate bass in the
troublesome 100Hz region.
The FullTrap enclosure is made from MDF wood composite with a black,
easy to clean melamine nish and ships at to reduce freight costs. Final
assembly is performed on site using a simple household screwdriver.
Building a FullTrap takes about 15 minutes from start to nish! The FullTrap
is available in a choice of three panel colors: black, beige and grey.
FulltRAP
SPECIFICATIONS:
ORDER NUMBER Z840-1100-xx (xx denotes color code 00=Black; 03= Beige; 08=Grey)
FRAME MATERIAL Black melamine laminated MDF
DIMENSIONS 24” (610mm) x 48” (1219mm) x 8” (203mm)
PANEL MATERIAL Formed, semi-rigid inorganic glass bers, 6.0 pcf. (96 kg/m3)
WEIGHT (ASSEMBLED) 39.7 lbs (18 kg)
FABRIC FACING Acoustically transparent polyester
DIAPHRAGMATIC
MEMBRANE
Loaded vinyl, 1 pcf (16 kg/m3)
RECYCLED CONTENT Over 50%
LEED ELIGIBLE Yes
Acoustically transparent fabric covering presents
a professional architecturally attractive look.
Resin treated edges work with the micromesh to
fully contain glass bers from escaping.
High density glass wool panel absorbs high
frequencies and helps eliminate utter echo.
Diaphragmatic membrane vibrates to absorb
lower bass frequencies without resonating.
Deep 8” cavity assists in trapping bass and
controls lower mid range frequencies and standing
waves.
Black melamine nish provides a tough durable
coat that is easy to clean and looks great!
High density wood ber composite construction
provides rigid structure of outer frame.
CORNER MOUNTING ABSORPTION CHARACTERISTICS:
Sound absorption coefcient data
100Hz
80Hz 63Hz 50Hz 40Hz
125Hz 160Hz 200Hz 250Hz 315Hz 400Hz 500Hz 630Hz 800Hz
1kHz
1.25kHz
1.6kHz
2kHz
2.5kHz
3.15kHz
4kHz 5kHz
FREQUENCY (Hz)
2.2
2.4
2.6
2.8
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SOUND ABSORPTION COEFFICIENT
Wall Mounted
Corner Mounted
Due to the broadband nature of the diaphragmatic limp mass used in both the MaxTrap and FullTrap, the device will
naturally vibrate at the room’s resonant frequency. This will result in greater effectiveness at the peak frequency, in par-
ticular when corner mounted. This is clearly demonstrated in the Corner Placement Test where the resonant frequency
in the laboratory is 80Hz. For reference, the standard Sound Absorption Coefcient wall-mount test was also performed.
Although limited in scope, it provides typical data down to 100Hz and expected performance at lower frequencies as
calculated by the laboratory. It should be noted that bass absorption tests are difcult to produce due to the extremely
long wavelengths of lower frequencies and available room size. The tests, as described above, are as a result of our
working with Riverbank Laboratories to deliver the most accurate ndings possible given the limitations of the facility and
practical mounting methods.
WALL MOUNTING ABSORPTION CHARACTERISTICS:
Sound absorption coefcient data
40Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 5kHz
.20 .57 1.76 1.27 1.33 1.23 1.19 1.13 1.13
40Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 5kHz
.37 .59 .83 .80 1.00 1.02 .98 .94 .95
48” (1219mm)
24” (610mm)
8” (203mm)
10” (254mm)
Front Rear