Uniden Bearcat 125AT Scanner Replacement Speaker Installation
It's easy enough that you don't need a video, but here's a walkthrough just in case you want to fix it without worrying about the warranty.
Parts List: www.unidenparts.com/scanner-pa...
You can directly connect a Speaker wire terminal to another external speaker to test that it really is your internal speaker that's busted if you don't want to risk spending $15 buying a new one to replace it.