Can I mix 2 ohm and 4 ohm speakers in the same system? What I have is the stock head unit, Power Acoustic RZ4 2000D 4 channel amp (identical to SS PN 4.520D) and Infinity Kappa 6.11 2 ohm speakers. These are mounted in the fairing stock location and wired to the front channels of the amp. If I were to add speakers in the lower fairings do I need to stay with 2 ohm or can it be wired in a way to use 4 ohm speakers along with the 2 ohm up top? Also, do I just use the rear channels for the lowers or does the h/u need to be flashed for the rear channels as well? This is on an FLTRX. I'm not much on wiring but can follow directions.