This is the rating that tells us how much amperage a battery can provide for exactly one hour.Ĥ8 amp hours is a common battery specification for car batteries. When the car is turned off, and the audio system is running off the battery, we must consider the battery's amp hour specification.
#New head unit or amp stock radio full
In this example, the alternator would need to deliver 100 amps of current output to maintain a full charge on the battery while the audio system is running. Lower efficiencies will draw more current. Class D amplifiers are becoming more popular as large car amplifiers, which have a theoretical limit of 100% capacity, so let's stick with this for our example. Now, this is assuming the amp is 100% efficient, which is rarely the case. Note that we're taking 12 volts in this calculation, which will actually give us higher current estimates. Power (watts) is equal to the product of current (amps) and voltage (volts). To keep numbers easy, we can say that a 1,200 watts RMS audio system (most of the power is required by the amplifiers) will require 100 amps of current. In this case, the power requirements of the audio system (most notably the subwoofer amplifier/s) demand more energy from the factory battery at a faster rate than the factory alternator is capable of recharging.Ī standard car battery will be labelled as 12 volts but will generally be able to provide 12.6 or more when fully charged and nearly 15 volts when the engine is running, and the alternator is charging. It could be the case that an aftermarket audio system is too powerful for the vehicle in question. Battery & Alternator Supply Specifications The actual touchscreens, radios, and control panels for the car audio system do require power, though it's very small compared to the requirements of the amplifiers.Īudio System Power Requirements Vs. Aftermarket amps and subwoofer amplifiers are often standalone devices. The amplifiers require the most power and are generally incorporated into the stereo/receiver. The speakers are passive, meaning they do not require power. There are three main components to a car audio system: the stereo, the amplifiers and the speakers. So then, the car's audio system will certainly drain the car's battery when left on while the engine and alternator are turned off. When the car is turned off, and the engine isn't running, any electrical components still running will drain the battery since the alternator is no longer charging it. There are cases where the audio system (particularly the amplifiers) will be too power-hungry for the battery and alternator to keep up with. Related article: Can A Car's Battery Charger Run A Car Stereo? When the car is on, and the engine is running, the alternator continually charges the battery to maintain a full charge to run the car's electrical components, including the audio system. Top 11 Best Car Audio Amplifier Brands In The WorldĬar audio systems are powered by the electrical energy stored in the battery.Top 11 Best Car Audio Speaker Brands In The World.Top 9 Best Car Stereo Brands In The World.
#New head unit or amp stock radio how to
In this article, we'll discuss how audio systems drain car batteries and how to keep batteries charged and healthy while still enjoying the audio/sound system. Aftermarket systems may draw too much power, and poor installation may cause parasitic draw. After finding a cause, you can start to look for solutions and answers to fix the problem with your battery.ĭo car audio systems drain batteries? Car audio systems draw power from the car battery and will drain the battery if the engine and alternator are off or if the alternator cannot charge at a rate faster than what the audio system requires. When you find that your car's battery is draining and dying on you often, looking for a cause to the problem is the best thing to do.
0 kommentar(er)
