Will a fuse limit power to an amp?

Im trying to figure out why my brand new amp that should be doing 4000 RMS (true RMS not a garbage Boss unit) . Cost $1300.

Anyhow, i cant clamp any more then 1000 watts out of it and im trying to rule things out. Then I remembered my inline fuse is 250 amps. Should be bigger i know that, but will that alone

Im trying to figure out why my brand new amp that should be doing 4000 RMS (true RMS not a garbage Boss unit) . Cost $1300.

Anyhow, i cant clamp any more then 1000 watts out of it and im trying to rule things out. Then I remembered my inline fuse is 250 amps. Should be bigger i know that, but will that alone hold back power?

I don't have a local shop that carries 350a ANL so you just saying "put one in and find out " wont work in this case.

Thanks

Other answer:

3timeFelonWithAnswers:
The fuse is just there to protect the wire and the amplifier. If something goes wrong, the fuse will blow out.

Too big of a fuse can cause a fire, it will not blow. What will happen is that the fuse and the wire will get very hot which can cause a hazard and a fire. I have no idea what size (gauge) wire you're using. You did not mention it to me. So I would NOT recommend using a bigger fuse at this point.

4kw RMS is a lot of power for a car with a stock electrical system. For that much power, you will need to invest into a high output alternator and a good battery like XS Power.

don r:
Just because the amp is capable of producing a certain amount of power doesn't mean it can create this out of the clear blue sky. This requires a power source capable of feeding it at least that much power. Go back to your car and see how much power the battery has and do not depend on the alternator to make up the difference. You cannot get 4 kilowatts out if you don't have 4 kilowatts to put in. The rest of the car needs power and don't leave that out of the equation . The fuse does not control voltage or current except to burn out when too much of either is being drawn through the circuit. Figure out how many batteries contain 4 kilowatts of power; Lets say your battery has 100 amper hours of current. Get 40 of them and you'll make 4 kilowatts with them- for an hour anyway. Your alternator will turn up needing more than 5 horsepower just to keep the batteries charged. Well there is a real problem, if you're driving around a ton of batteries just to make the biggest disturbance in the neighborhood.
?:
>"Anyhow, i cant clamp any more then 1000 watts out of it"<
How do you know this? How are you measuring it?

But no. A fuse won't limit power – not until it blows anyway.

I'm sure that your amplifier is not a true 4,000 watts. Even though it is not a cheap Boss amp, power numbers sell so manufacturers exaggerate them. It may be RMS watts but these are most assuredly RMS watts at ideal output impedance and peak output. A true 4,000 watt amp needs to be, by necessity, a very large, heavy unit – something like you would see in a rack at a rock concert.

If anything is limiting that amp, it is the power supply – the car's battery and alternator.

Frank:
I think you are mistaken on the purpose of a fuse. Fuses are a safety measure to keep things from getting damaged if too much power is coming through. With too much power the fuse will blow, thus severing the connection and stopping the flow of electricity. They don't limit power (like a resistor/capacitor).

I think Octep has your answer. It is a power supply issue.

Robert:
A fuse will blow or a breaker will trip if it carries more current than it was rated for. If the fuse is not your problem check the voltage drops in your grounding and supply leads by parallel connecting voltmeter with them. Often electrical problems are sorted if all connections are sound, dropping the minimum voltage possible.
JetDoc:
If the fuse carries more power than it was designed for, it will blow. Other than that, a fuse won't limit the current flow in a circuit. The FUSE is not your problem.