How many amps are necessary for a car stereo?
A typical car stereo contains 4 amps. It is rare to find a car stereo without amps. Cars usually can contain up 8 amps, but you could always add more.
It depends on the capacity of the battery and the power used by the stereo. To roughly calculate the time, divide the amount of charge in the battery (amps hours) by the amount of current (amps) used by the stereo. If you don't know the current, divide the power of the stereo (watts) by 12. That would give you the current at max power output (max volume).
Wrong question. I assume that this pertains to a car and not a house. All modern cars run on a 12-volt system. So what I think you meant to ask is "how many AMPS in 90 watts at 12 volts?". Watts divided by volts equals amps, so 90 watts divided by 12 volts equals 7.5 amps. If you are trying to wire in a car stereo amp, better go with a 10 amp fuse.
Amps and Watts measure different things. An Amp is a measure of electrical current and a Watt is a measure of Power. You can relate the two if you know the Voltage. For example, if your car has a 12V battery and your stereo draws 10 Amps of current, you are using 120 Watts of power. [Power in Watts] = [Voltage in Volts] x [Current in Amps]
You can easily remove your old car stereo without taking help of a car stereo expert. However, you need to follow some steps and need some tools to remove your old car stereo. You can save your money by following the steps for removing your car stereo otherwise you have to pay more money to the professional car stereo installer. Here are some steps to remove the car stereo safely. First of all, Read the…
Expensive. Home Amps require 120V AC power source. You will need a power inverter capable of running the amp that is run from the car battery (12V DC). Car Speakers are rated at different Ohms and Watts then home Stereo Speakers so using a home amp will fry your car speakers. Best to get a car amplifier that is made to run off the stereo power your speakers.