Well i have all three installed with a little less than 2 cube on each 1 with the 2000w alpine amp. The subs are currently at about ....2.5 or 2.6 ohms it sound GREAT nice clean hard hitting chest rattling bass just have the problem of it dropping my voltage down i have the big three and i am fixing to put my cap in in about an hour or so, so ill re-post and let u know how it goes. I will have my 300amp HO alternator and 2 2400 kinetik batts in less than a month so all my problems should be resolved soon!!