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<blockquote data-quote="Amilli" data-source="post: 5189897" data-attributes="member: 603825">I am asking with regards to the efficiency of class AB amps. It is said that those amps are only about 50%-60% efficient so does that mean that given a 1000watt RMS Class AB system, my real total output is only 500-600watts ?I am asking this because my total system RMS is around 1320watts (3 class AB amplifiers all running at 2ohms, yes even the components (full active) are 2ohms each ) 70watts for the tweeters, 200watts for the mids and 780 watts for the sub and my installer said that we can just go with my existing gauge 4 power wires from a previous set-up.I&#039;m not out to play my system at 3/4 volume for an hour but I usually travel far distances so the stereo will be on for maybe 2-3hours continuously,4 times a week.What are your thoughts on this because if we need to rewire the power lines to gauge 2 or 0, we would need to change everything from BIG3 to ground wires as well + we have to remove the seats from the car again.Will gauge 4 be enoughthanks</blockquote>

[QUOTE="Amilli, post: 5189897, member: 603825"] I am asking with regards to the efficiency of class AB amps. It is said that those amps are only about 50%-60% efficient so does that mean that given a 1000watt RMS Class AB system, my real total output is only 500-600watts ? I am asking this because my total system RMS is around 1320watts (3 class AB amplifiers all running at 2ohms, yes even the components (full active) are 2ohms each ) 70watts for the tweeters, 200watts for the mids and 780 watts for the sub and my installer said that we can just go with my existing gauge 4 power wires from a previous set-up. I'm not out to play my system at 3/4 volume for an hour but I usually travel far distances so the stereo will be on for maybe 2-3hours continuously,4 times a week. What are your thoughts on this because if we need to rewire the power lines to gauge 2 or 0, we would need to change everything from BIG3 to ground wires as well + we have to remove the seats from the car again. Will gauge 4 be enough thanks [/QUOTE]

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