lildragon45 Posted March 7, 2020 Report Share Posted March 7, 2020 Hi so I just picked up a Rockford Fosgate Prime R400-4D. Its 4 x 75 @ 4 ohms Class D. So they recommend having a 40A inline fuse. Would it be ok to run say a 60A or 100A instead? Pros and cons please. Also this what I have readily available at home. But if I should stick to the 40A then I will. Any input will help thanks. Link to comment Share on other sites More sharing options...
kirill007 Posted March 7, 2020 Report Share Posted March 7, 2020 Stick with 40A and the correct size wiring. Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
Ron36 Posted March 7, 2020 Report Share Posted March 7, 2020 Fuses are made to blow before the amp blows and possibly burns your car down , use what the manufacturers recommend . Also if your fuse is to high for the wire your using it will burn up and not pop the fuse. 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery Link to comment Share on other sites More sharing options...
Kain91 Posted April 25, 2020 Report Share Posted April 25, 2020 On 3/6/2020 at 9:43 PM, lildragon45 said: Hi so I just picked up a Rockford Fosgate Prime R400-4D. Its 4 x 75 @ 4 ohms Class D. So they recommend having a 40A inline fuse. Would it be ok to run say a 60A or 100A instead? Pros and cons please. Also this what I have readily available at home. But if I should stick to the 40A then I will. Any input will help thanks. No absolutely no. The online fuse is a fire protection. If you replace it with a higher amp fuse and the power wire grounds out it will not break before damage is done to your power wires or worse a fire. Changing to a larger fuse is not going to change the performance of the amp. If you want better performance by feeding more power, look into things like big 3 upgrade or more effective active cooling setups. Link to comment Share on other sites More sharing options...
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