I decided to upgrade the sub and amp in my car and bought an Infinity Kappa 120.9W (12 in) and Kappa One amp. The amp can put out 800 watts rms at 2 ohms and 500 watts rms at 4 ohms with a peak of 1600 watts. The sub has an rms of 350 watts and is 2 or 4 ohms select-able with a peak of 1400 watts. My head unit is Pioneer DEH-P8400BH. What do you think the best settings are for a good balance between sql and spl?