When I watch TV on my iPad I constantly hold my hand behind the speaker so I can actually hear it. This morning I made this awesome reflector on my 3D printer that magnetically connects to my iPad 3. It worked so well tonight that I actually had to turn down the volume. I had to share it with you.
Some assembly required and magnets not included. You will need two and they can be found here. http://www.gaussboys.com/store/index.php/c0303.html
Superglue or hot glue works great. Just make sure you put them in the right way so they stick to the iPad. It should work on the iPad 2, iPad 3, and iPad 4. Not tested with the iPad mini.