Treblab HD77 Surround Replacement
Matthew Szabo and 2 other contributors
Last updated on Dec 30, 2025
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Introduction
Go to step 1 ↓In this guide you will learn how to replace the surrounds on the Treblab HD77. Surrounds are the rubber membrane on the sides of the speaker and they are responsible for keeping the audio quality under control. The surrounds help to keep the speaker diaphragm in a controlled range of motion which improves audio quality and creates bass. Without the surrounds, the diaphragm will move in and out too much which will cause for very poor audio quality and may even damage the speaker as a result. This guide aims to assist in replacing the surrounds in the event that they become damaged or break.
Note that the speaker is water resistant and as a result there is a water resistant adhesive used to hold some components in place, including the surrounds. In order to restore the water resistance of the speaker, this adhesive will need to be reapplied to its original location before reassembly.
Make sure the device is powered off before disassembly.
What you need
Tools
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waterproof glueOptional
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Remove the outer casing of the speaker by prying at the edges to unlock each prong holding the casing to the speaker.
Ask FixBot
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Remove the plastic ring on top of the rubber surround on the side of the speaker by lifting it gently.
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Insert the blade of a small precision knife between the edge of the rubber surround and the plastic edge.
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Gently apply pressure and slide the blade in a circle along the entire circumference until the surround loosens and can be removed.
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To reassemble your device, follow these instructions in reverse order.
Team
UMass Dartmouth, Team 3-5, Biswokarma Fall 2025 Member of UMass Dartmouth, Team 3-5, Biswokarma Fall 2025
UMASSD-BISWOKARMA-F25S3G5
5 Members
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