Check out the McDSP Futzbox. Lots of cool emulations of speakers, mostly "lo-fi", and telephones and stuff. If I'm correct I think there's even a few broken or torn speaker emulations but don't hold me to it.
Great thread. I was looking for something that can re-create this weird broken speaker bass sound that opens this obscure Rundgren track from the late 70s. Luckily, I have Trash2 that I got for free once and haven't used.