to anyone that has the infintity system, the front 6x9s are actually a 1 way subwoofer. I tried to replace mine with the infinity reference 3 ways, they work but the stock amp could not push the so it sounded like crap. So if you guys want to upgrade your front speakers, you will have to get a seperate amp to power them. I found this out after I installed one and brought it to my local audio shop.