Jonny G said:
If subs broke, its fucked. You can't repair spekers.... check all wires ad connections before chucking them though!
You can repair speakers/ subs etc , well it depends if your speaker is High Quality !
If my sub ever breaks , it comes off piece by piece ! (Resonant Engineering)

previously known as Adire Audio
Normally most speakers are serviceable
e.g spiders, voice coil, tinsel wires, cones , magnet etc comes off piece by piece and can be replaced or upgraded!!
It depends if it will be worth doing this to the average value speaker!
Here is R.E Brahama and XXX in all it's glory