Okay I have a Skar Audio ZVX 18" subwoofer 1800 watt rms powered by a Skar audio RP 2000.1 2000 watt rms. I set my gain with a multimeter using ohms law. To get the right volts(42.4) I had to drive my gain up all the way almost. I know this can't be good for the amp and it doesn't seem right. Should this be correct? My sub is wired down to 1 ohm