ooja3k said:what kind of wattage are you throwing to those kappas, they are two ohms so the amp i have would be givin em 150rms, and how do they sound do you like them??, thats the sub im thinking about getting too how does the whole system sound and let me know what u are running to each speaker please!!! also what are those cornfed spacers for?? audio or 4x4ing??