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Thread: quick question about using a larger fuse on alpine amp

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    quick question about using a larger fuse on alpine amp

    ok im going to be installing an older alpine amp in my car soon. the manual says to install a 25 amp fuse. would using anything higher be detrimental? or should i strictly use a 25 amp fuse? most install kits come with at least a 30 amp. its not a problem to buy a 25 amp one just want to be sure.

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    If it says to use 25, then use 25. Going bigger means providing less protection for the system.
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    alright thanks just what i wanted to hear

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    if there is a 25 amp fuse on the amp, i don't feel that it is too big of a deal to run a 30 amp fuse at the battery (this would is primarily for 'worst case scenario' things-- you get in a wreck and the power cable gets cut/pinched...). if the amp is not fused(as some aren't...), i would highly recommend using only what they recommend, any higher could allow the amp to hurt itself.

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    thanks guys

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    As per soundman and others - if the unit has its own fusing - which it will have (surely!?) - the upstream fuses are irrelevant.

    Equipment fusing is to protect itself (else fail in a "safe" manner").
    Other fuses are to protect downstream wiring only (ignoring discrimination; and undersized fuses that economically match the load).

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    Quote Originally Posted by OldSpark View Post
    As per soundman and others - if the unit has its own fusing - which it will have (surely!?) - the upstream fuses are irrelevant.

    Equipment fusing is to protect itself (else fail in a "safe" manner").
    Other fuses are to protect downstream wiring only (ignoring discrimination; and undersized fuses that economically match the load).
    not all amps have fuses on the amp-- some very old amps, some cheap amps, and some newer, very high powered amps do not have integrated fuses(the first that comes to mind is Orions competition sub amps.).

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    yes the amp has its own fuse. i was talking about the inline fuse for the power wire to said amp. should have been more specific. youre saying the size of fuse there wont make a difference? thanks again.

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    it should be as close as possible.

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