Introduction
This guide involves further disassembly of the clock radio and will require using several different tools and techniques, including using a soldering iron. If you need help on how to use a soldering iron, consult this iFixit guide: How To Solder and Desolder Connections
Tools
Parts
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            Find the battery compartment on the bottom of the clock radio. 
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            Using your thumb, push the compartment cover latch toward the battery. 
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            With the latch pushed in, pull the compartment cover upward to remove it.. 
 
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            Lift the battery from the compartment. 
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            Pull the battery up and gently disconnect it from the battery connector. 
 
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            Using a Phillips #00 Screwdriver, unscrew the six 12mm screws from around the bottom of the clock radio. 
 
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            Lift the top off. Two gray, plastic internal pieces will fall out when you do this; set them aside. 
 
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            The red wire is the + and the tan wire is the -. These wires are connected with solder. 
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            Apply the hot soldering iron tip to the speaker connection solder. 
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            Pull the speaker away from the wires. 
 
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            Attach a new 65 mm speaker, model #115048352530, with the wire connectors. Match the red wire to the + and the tan wire to the -. 
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            Solder the wires to connect. Let the solder cool. 
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            Reverse Step 6 to insert the new speaker in holder. 
 
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To reassemble your device, follow these instructions in reverse order.