I got inspired to make this indestructible a couple of days ago when I stumbled across a set of really nice set of audiobahn subwoofers at a yard sale. The only problem was that the speaker cones were badly cracked from the previous owner pushing to many watts through them. I bought them, took them home, and discovered a cool trick to fixing the cracks which you are about to learn about.
Don't blame me if you break your broken speaker cones lol.
This wont properly work on metal or plastic cones.
This fix will likely not make your speakers sound better than they did before they cracked. It should however sound better than they did when they were cracked.
Step 1: Required Tools
Here is what you will need to fix your speaker.
Elmer's glue, gorilla glue (this stuff also works great for fixing cracks in speaker dust covers), or another type of semi flexible wood glue
A regular coffee filter.
A paint brush. I recommend a semi stiff bristled brush as it helps to rub the glue into the speaker cone
and last but not least a broken speaker...Duh