Jeffdachef 5,000+ posts
Gunz That Turn on Nunz
By the time you hear that, its already too late, you normally cant tell distortion from normal bass thats why you use an oscilloscope to actually see the wave form for precise gain settings.some people set it manually by slowly turning the gain up checking for signs of distortion or popping, cracking, and smells. I think that a lot of shops do this, as well as people in general although it's the least safe method
2 ohm gets you more power from your amp. You arent gonna burn anything as long as you set the gains properly. You can have a 5000 watt amp on a 300 watt sub as long as the input levels are set properly.