MaxTrap - Details And Specifications


Wood Frame
Air Space
Retention Rails
Diaphragm
Resin Edge
Glass Wool Panel
Micromesh
Fabric Cover

The Primacoustic MaxTrap is a combination full range absorber and diaphragmatic resonator designed to control all frequencies right down to the deepest bass.

This is achieved by combining a full-size high density glass wool panel (F) with a closed air space behind (B) created by the wood frame (A) to absorb sound below 100Hz. Lower frequencies pass through the front face and then cause the internal diaphragm (D) to resonate. The greater energy contained in low frequencies causes the limp-mass diaphragm to naturally migrate to the frequencies where room resonance is most prominent, thereby reducing the effect of powerful room modes.

Made from easy to clean black melamine coated wood composite frame (A), the MaxTrap ships flat in kit form to save freight costs and assembles in about fifteen minutes using standard household tools. Once together, the device hangs easily in the corner using supplied French cleats.

The MaxTrap may be ordered in a choice of black, grey or beige fabric covering to suit most color schemes.

Physical Specifications

Frame Material: Black melamine laminated MDF
Dimensions: 24” (610mm) x 48” (1219mm) x 19” (See detail dimensions)
Panel Material: Formed, semirigid inorganic glass fibers; Density 6.0 lbs. pcf. (96 kg/m3)
Fabric Facing Acoustically transparent polyester
Diaphragmatic Membrane: Loaded vinyl, 1.0 lbs. per square foot (4.88 Kg/m2)
Fabric Color Codes: Black=00, Beige=03, Grey=08
Order Number: Z840-1110-xx
(xx denotes color code 00=Black; 03= Beige; 08=Grey)
Mounting Hardware: Wall mounting cleat, wood screws and drywall anchors included.
Full Specifications: MaxTrap Engineering Data Sheet [610k]

Absorption Characteristics

40Hz 50Hz 63Hz 80Hz 100Hz 125Hz 250Hz 315Hz 500Hz 1kHz 2kHz 4kHz 5kHz Test Data Extended Freq. Test Data
0.37 1.28 0.57 2.76 2.48 1.76 1.27 1.40 1.33 1.23 1.18 1.13 0.80




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 particular 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 Coefficient 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 difficult 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 findings possible given the limitations of the facility and practical mounting methods.

Fire and Burn Performance for Broadway Panel Component

Test Class Flame Spread Smoke Density Test Data
ASTM E 85-05 1 or A 15 FSI 155 SD
CAN/UL-S102 1 or A 15 FSC1 155 SD

Test data provided by Bodycote Materials Testing Inc. This method, designated as ASTM E 84-05, "Standard Method of Test for Surface Burning Characteristics of Building Materials", is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire-hazard or fire-risk assessment under actual fire condition.

Fire and burn test data applies to the Broadway acoustic panel only and does not include the MDF wood encasement or the diaphragmatic membrane. For fire-hazard or fire-risk assessment, please consult your local building authority and/or insurance underwriter to ensure the product meets local building codes.

Primacoustic is a division of Radial Engineering Ltd. Copyright 2010. All rights reserved.