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Message: <blockquote data-quote="Deiimos" data-source="post: 8757981" data-attributes="member: 682903">Fuse rating is what will pass through it without blowing. A fuse will pass a fair bit more current before it actually blows, so on music the 120a will likely work just fine, and give the amp slight protection if that is what the manufacturer included / recommends for that model.What size wire are you running?Edit: I should also add that in real world use on subwoofers, it is even less likely to pull that much current compared to the Dyno that feeds into resistors which don't change impedance like music through subwoofers / enclosure will. The Dyno is great in that it shows what an amp can do, but again with impedance rise, voltage fluctuations, you may not see that high current other than briefly.</blockquote>

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