Internal Chassis Damping Strips

As AV RoomService continues to address unwanted vibrations starting from large for structural (RoomDamp2), down to medium for equipment (EVP and CVP), we are now down to smaller chassis resonances.

Many equipment chassis ring, buzz and/or rattle. Chassis ringing can be especially perceptual. A light rap of a pencil eraser tip on the chassis, or even a hand clap near it will allow this unwanted vibration to be heard. You can stop this by applying our constrained-layer damping strip to the inside of the chassis lid.

Not only does it create airborne energy, but it can transfer mechanical vibrations to electronic components, as well as electrical contacts on the PC board, and/or chassis.

Chassis lids have natural resonant frequency modes like plates. Plates have modes which are not harmonically related to the fundamental mode, and these over-tones are typically much higher than the fundamental. They can vibrate in both clamped and free edge conditions.

AV RoomService’s Internal Chassis Damping Strips are a constrained-layer of metal backed with a viscoelastic bonding material that prevents deformation of the chassis, thus damping the natural resonance of the chassis and converting the mechanical energy into thermal energy. What was a ring, is now a short thud.

In addition, the AVRS Internal Chassis Damping Strip acts as an electromagnetic shield keeping stray EMI/RFI fields at bay.

The damping properties of the AVRS Internal Chassis Damping Strip were developed and tested using an Oberst beam. The Oberst Beam Method is widely used for the measurement of the mechanical vibration properties of damping materials.

This test method is a classical method based on a multilayer cantilever beam which consists of a base beam and one or two layers of other materials. The beam is excited mechanically, and the movement and duration is recorded via an accelerometer sensor.

Demonstration of Mechanical damping and Electrical shielding benefits (Electrical 40Hz.-100kHz. and Radio 600MHz.-6GHz. from a typical AC extension cord).

Internal Chassis Damping are available in 2"x12" and 4"x 12" lengths



Test Report Coming Soon

Patent Pending - Made in The USA

AV Roomservice, Ltd.
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Refund Policy

We want you to be completely satisfied with your EVPs’. If there is an issue for example: damage from shipping, the order is not correct, etc., please email us at, so that we can work with you to make it right.

Note that EVPs’ are handmade and that molded fiberglass may have some imperfections. We reject pads that will not comply with performance standards prior to placing into inventory.

Please inform us of damage or order error within 5 days of receiving.

Thirty (30) day money back guarantee (from receive date) is our policy. If you feel the product has not performed as claimed, please follow these instructions:

  • Request a Return Authorization by emailing us within 30 days of receive date and inform us of the reason for the refund request, and include your Invoice number.
  • Ship the product back to us via any carrier you prefer.

  We reserve the right to charge a 10% restocking fee.