While no one is likely to use it for critical music listening, the iPad’s built-in speaker is perfectly serviceable for watching video. But you might sometimes find yourself in need of just a little more volume than it can provide—for those occasions, there’s a cheap solution: passive amplification. Since the iPad 2 and third-gen iPad speakers point backwards rather than forwards, you can increase their volume by redirecting their sound waves. Simply cut an iPad corner-sized hole in the closed end of a cup, insert the iPad with the speaker aiming towards the rear of the cup, and voila—your iPad should sound noticeably louder, if not necessarily better. Make sure you cut the hole in a place that will let your iPad stand upright, and at a size that captures as much of the audio as possible from the rear speaker for redirection. [via Reddit | Lifehacker]
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