How to install a ceiling speaker into drop tile ceiling 

Hello. I used half inch drywall 2*2 you get from HD. Works great and lighter than the wood as I'm not sure how much weight the drop ceiling can support. Thank you for this idea! Oh I know it's a year old video, I feel bad when I see no comments.

i wish i have one in my house

Are those the $20 Parts Express ceiling speakers (that use GRS drivers)?