Updated: 4/22/08

© Dynamic Control of North America, Inc. All Rights Reserved.

Appearance:

4-layer acoustic foam barrier with black urethane surface

Thickness:

0.392 inches" (10.0mm)

Mass:

1.5 lb./ft2

Tensile Strength:

18 psi

Tear Strength:

1.5

Thermal Conductivity Random Incidence Acoustical Thermal Resistivity (R):

0.25 (hr-ft2-deg.F/BTU)

Sound Absorption Coefficients (Using Reverberation Room Method -ASTM C423-84a and E-795-83 - Mounting A):

0.09 @ 125 Hz

0.11 @ 250 Hz

0.18 @ 500 Hz

0.24 @ 1000 Hz

0.43 @ 2000 Hz

0.70 @ 4000 Hz

Chemical Resistance:

Resistant to water and mineral oils

Federal Standard Tests:

Meets HF-1

Temperature Range (Optimal Performance):

  -45ºF to +212ºF (-43ºC to +100ºC) continuous

Temperature Range (Resistance):

Available by request

Handling and Application:

Store material at room temperature for best application

Storage Information:

Number of sheets in stack: 200 maximum

Material must be stored horizontally in its wrapping

EXTREMELINER

Description:

Extremeliner is a composite material with four parts.

•        Bottom layer of 1/8" neoprene foam that damps the material it is mounted against and decouples the vibrating panel from the other layers of material.

•        15 mils of acoustic lead, the ultimate low- frequency barrier that not only provides strong low-frequency attenuation, but also enables Extremeliner to conform to irregular or uneven surfaces.

•        1/4" of high-efficiency, open/closed cell acoustic foam optimized for absorbing low- frequency sound. The open cells are designed to accept sound waves while the closed cells dissipate them.

•        3 mil urethane top facing with a random pattern for a tough outer coating that minimizes reflections and dramatically improves system performance, especially in the lower mid-range and mid-bass frequencies where normal acoustic foam becomes less effective.

Acoustic Properties:

Extremeliner provides high acoustic absorption and excellent thermal insulation for a variety of automotive uses--from getting the most out of a mobile audio system, to reducing low-frequency road noise, to attenuating a noisy engine or drivetrain. Extremeliner is considered the ultimate low-frequency sound attenuator because its four- part lead septum composite acts as a sound barrier. Dynamic Control recommends using Extremeliner with a layer of Dynamat for best results.

Applications:

Extremeliner is for use under carpeting, behind interior panels, and inside speaker enclosures to eliminate resonance and vibrations in the enclosure. It can also be used for other applications requiring a significant reduction in airborne noise.

Installation:

Extremeliner comes in six-foot square pieces measuring 24" x 36". Use scissors, knife or die to cut Extremeliner to the desired size and shape before installation. Next, remove dust, grease, moisture, and other foreign matter from the application surface. When used under carpeting, no spray adhesive is needed. For other locations, spray adhesive on the application surface and on the back of the Extremeliner. The simplest application technique is to bend the Extremeliner slightly and attach it along its shortest edge. Press Extremeliner firmly into place.