What kind of amp/speaker is Josh using here at about 3:00? I have never seen anything like it before, but it gives off a really cool tone. Anybody know what it is?

My gear:
-Fender Jaguar HH
-Fender Fat Strat
-Guild GAD-G212
-Washburn D33S
-Vox AC30CC1 tube amp
-Vox 847 wah
-EH Big Muff
-EH Double Muff
-EH Small Clone
I don't know but it's pretty much an amp+blown speaker. It's basically what a Fuzz pedal is supposed to emulate, but it's the real deal. You'll get a similar tone by using a fuzz pedal, turning the dirt all the way up, and play around with the tone stack.

That sounds pretty much like his sig tone. He is known for using bass amps, so I guess that plus a fuzz pedal will get you a very similar tone.