Been there, done that. If you want really strong super thin magnets, open up small hard drives. It's like 1/4" thick but it's powerful enough to stop most mechanical watches. If you ever stick it on a car's body, you'd have to use a screwdriver to get it off.
im not realyl sure what sub that is, but i left it outside in the sub a couple days ago, here where i live its been like 100 degrees everyday the past week and i came back out and the rubber outside of it melted and the cone fell in lol
pore gas on a sub and see what happens hehe. i bought a mega sound sub from walmart and well the rms on it was 60 i gave it around 900 and played it on a 30 hertz test tone just to see what would happen it actually took it for about 10 seconds i was amazed then it smoked and stopped
