Restore the paper that goes in the active speaker

Paper circle on the active speaker open easily exposed to dirt and touch from the outside. When exposed to touch that could make paper should stand out even protrude into the can be an eyesore. Speakers will look less good. It can also damage the speakers,  the speaker sound will break.

how to restore the paper that goes in the active speaker

• See the black paper on the incoming speaker.
• Torn bit by a black circle line, carefully.
• Press the paper into the forward direction with a finger.
• Paste it rips with glue.
• You can practice.