Bose QuietComfort 35 Earpad Cushion and Scrim Mat Replacement

Introduction

If the ear pads on your Bose QuietComfort 35 headphones become worn down and begin to break down or tear, use this guide to replace the ear cushions and scrim mats.

Ear pads influence noise isolation and audio quality in addition to offering comfort and providing grip. Worn down ear pads will reduce noise isolation and will provide less comfort while using your headphones. Depending on how often you use your headphones, you will need to replace the ear pads every 18 months to 2 years.

Before beginning, make sure to power off your headphones completely and disconnect from any external power source.

What you need

Step 1 Ear Cushion and Scrim Mat

Bose QuietComfort 35 Earpad Cushion and Scrim Mat Replacement, Ear Cushion and Scrim Mat: step 1, image 1 of 1

Slide the power button to the "off" position.
The power light color should be red.

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Step 2

Bose QuietComfort 35 Earpad Cushion and Scrim Mat Replacement: step 2, image 3 of 3

Firmly squeeze the torn portion of the ear cushion while grasping the plastic ear cup.
Pull the cushion toward the center and up to remove them from the fasteners.
Repeat this on all sides of the cushion until it's freed from the ear cup.
Repeat the above steps for the second ear cushion.

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Step 3

Bose QuietComfort 35 Earpad Cushion and Scrim Mat Replacement: step 3, image 3 of 3

Take the top end of the scrim mat while firmly holding the plastic earcup.
Peel it back and away from the plastic to break the adhesive and remove it from the ear cup.
Repeat the above steps with the second scrim mat.

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Step 4

Using your fingernail or a spudger, to scrape away remnants of the scrim mat from both sides of the plastic earcup.
Use a paper towel dipped in rubbing alcohol to scrub any excess adhesive from the plastic earcup.
Do not soak the paper towel as too much rubbing alcohol could flood the exposed speakers and interior electronics within the earcup permanently damaging them.

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Step 5

Bose QuietComfort 35 Earpad Cushion and Scrim Mat Replacement: step 5, image 3 of 3

Holding the replacement scrim mat firmly, peel the tab covering the new adhesive on each side of the new scrim mat.
Place the new scrim mat inside the empty earcup, covering the exposed speaker and interior electronics.
Repeat the above steps with the second replacement scrim mat.
It is easy to place the new scrim mats in the wrong earcup. The scrim mat labeled R should be placed in the earcup that has the power switch. The scrim mat labeled L goes in the opposite earcup.
A tiny R and L is also inscribed within the earcup.

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Step 6

On the inside rim of the earcup, there are small clips.
Align the cushion with the ear cup, and expose the plastic ring underneath the cushion by pulling the cushion back slightly.
Slide and press the plastic ring into the first clip until you hear a clicking sound. Repeat for the remaining clips.
Every time you insert a part of the cushion's plastic ring under one of the clips, you will hear a clicking sound which means it has been successfully placed behind the clip.
Repeat the above steps for the second ear cushion.
Confirm that the ear cushions are secure.