Listen bro the lowest i have ever strapped was .5 and we got 154.5 on ac190 and it was quarter of the way up before protection happened. Just ask Tupac at the last show he was going into protect i told him to roll real slow yes you lose battery but the amps didnt go into protection. When you roll fast the amps will go into protection if strapped under 1ohm. Checo also rolls up real slow plus the amps have to be level matched perfect when using more then a pair strapped this is key if the subs are in common inclosure like Chriss van.