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<blockquote data-quote="grtn316" data-source="post: 1424749" data-attributes="member: 564704">I used these calculations to figure out the size of fuse I needed, but it still blew.Gain Setting:Sqrt(1800 watts *1 ohm) = 42.3 voltsFuse Size:1800 watts/ 42.3 volts = 42.3 ampsI set my gain around 40-50 volts (The knob was maybe turned up a quarter). I then hooked up the speakers and played it for about 15 minutes and blew a 60amp fuse. Did I do something wrong? How come i hit 42.3 volts at a quarter of the way up on my amp? Shouldn&#039;t this be a little over 50% turned on a 3000 watt amp?I went to a local store and found a 100 amp fuse. I am going to try this tonight. It would be a bad idea to raise the gain any higher than 42.3 volts right? My two subs are 900 watts rms, so 1800 watts should be perfect. Just a little confused on why the gain is so low but my volts are so high...Can anyone clear this up for me?Thanks</blockquote>

[QUOTE="grtn316, post: 1424749, member: 564704"] I used these calculations to figure out the size of fuse I needed, but it still blew. Gain Setting: Sqrt(1800 watts *1 ohm) = 42.3 volts Fuse Size: 1800 watts/ 42.3 volts = 42.3 amps I set my gain around 40-50 volts (The knob was maybe turned up a quarter). I then hooked up the speakers and played it for about 15 minutes and blew a 60amp fuse. Did I do something wrong? How come i hit 42.3 volts at a quarter of the way up on my amp? Shouldn't this be a little over 50% turned on a 3000 watt amp? I went to a local store and found a 100 amp fuse. I am going to try this tonight. It would be a bad idea to raise the gain any higher than 42.3 volts right? My two subs are 900 watts rms, so 1800 watts should be perfect. Just a little confused on why the gain is so low but my volts are so high... Can anyone clear this up for me? Thanks [/QUOTE]

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