**Contents**show

A typical stereo head unit will need about 5 amps of power. If you want to crank up the volume for parties and plan on using a powerful amplifier, then 5 amps likely won’t be enough either. We do have power supplies available that offer up to 30 amps.

## How much electricity does a car radio use?

The maximum output power per channel for average car stereos ranks at about 10 watts RMS. It’s a decent setup to shun out usual traffic noise without causing too much distortion.

## How many amps does it take to power a car stereo?

Typical car stereos (depending on the design, features, etc) draw about 2 to 5 amps or so at full power.

## What power supply do I need to run a car stereo?

You need a 12V power cord to use your car stereo power supply for home use, but you can easily get that from a hardware store. Cut the end of the power cord and connect the black wire with the line of white around the stereo’s red and yellow wires. Make sure every wire is completely covered before you plug it in.

## How many watts does a stereo use?

Most times, the wattage is low, somewhere around 8 to 10 watts RMS per chanel. To find out the power of your head unit, type in the make and model to google search. Most standard factory car stereos usually have no more than about 10 watts RMS maximum output power per channel.

## How many watts does a radio take?

Most handheld two-way radios on the market today use between 0.5-5 watts of power to broadcast a signal. Some business radios are designed to run on slightly more power – between 1-5 watts depending on the model. In general, a higher wattage allows for greater range.

## How many amps does a 1000w amp draw?

Watts To Amps At 120V (Standard Outlet)

Watts: | Amps (at 120V): |
---|---|

800 Watts to amps at 120V: | 6.67 Amps |

900 Watts to amps at 120V: | 7.50 Amps |

1000 Watts to amps at 120V: | 8.33 Amps |

1100 Watts to amps at 120V: | 9.17 Amps |

## Can a computer power supply run a car amp?

Yes, it’s possible to use a PC computer power supply for powering a car amp. There are a few things you’ll need to know though. For example, unless you’ve got a higher-power model supply you won’t be able to drive speakers with the same power you could when installed in a car.

## Can I hook up my car stereo directly to battery?

Yes. Although it will drain the battery over time. If just for testing purposes, on aftermarket radio, hook the yellow and red wire to positive on battery, black to ground.

## Is 50 watts per channel enough car audio?

Generally a speaker rating of 50 Watts means it can stand average 50 watts before it breaks or melts from too much power. So more than 50 Watt rating for a speaker would mean that it works fine with more power rating with a amplifier that can deliver at most 50 watts to that channel.

## How many watts should my car speakers be?

RMS ratings realistically measure how much power the speaker can handle on a continuous basis, not just for a short period of time. A speaker rated at “up to 50 watts RMS” will make a better match for your low-powered stereo than another speaker rated “10-80 watts RMS.”

## How many kWh does a stereo use?

Appliance Energy Use Chart

Detail | Estimated Energy Usage* | Estimated Energy Costs** |
---|---|---|

Stereo | 0.05 kWh per hour | Less than $0.01 per hour |

Radio, CD player | 0.02 kWh per hour | Less than $0.01 per hour |

Tablet | 12 kWh per year | $1.56 per year |

Lighting |