It's about an 8-foot-long tube of metal, it's got a hundred or so holes on top, on that side is the speaker, and here is some lab tubing, and it's connected to this tank of propane.
E un tub metalic de 2,5 m, are vreo sută de orificii, pe partea asta e difuzorul, iar aici e tubulatură de laborator conectată la acest rezervor de propan.