I have a scorpion 12" bass speaker laying around and wanted to put it into an extension cabinet. I bought a Steelsound 12" cabinet with tweeter. Know for all of the things that I don't know!!! 1) The cabinet came with a grill with 4 clamps and screws. Is this all that is necessary to hold the speaker in? It seems to work but not sure for how long. 2) I have read that there should be some acoustic insulation. What kind and how much? 3) It came with a tweeter and a double jack. right know I just have the speaker wired to single jack. How does the tweeter fit in? What do I use for a crossover and how is it wired? Does wiring the tweeter parallel change the OHM's? Presently the Scorpion is 8 ohms. This is just a fun project and I plan to eventually give it to my aspiring 9 year old bass playing son!!!!