But did you know this is an easy fix with a stiffening capacitor? The dip in voltage is why the lights dim when there is a heavy bass note. This is a visual confirmation of what is going on with the electrical system. Without enough current to supply the amplifiers, not only causes your lights to dim but also your music to seem weak and flat plus it causes extra strain on the amplifier and electrical system.
Large wattage car stereo amplifiers draw large amounts of current from your vehicle's electrical system. Larger, multiple amp systems are even a bigger drain on your electrical system, in many cases depleting the system's current capacity thereby lowering the voltage far enough that it cannot properly supply the amplifier s. Adding capacitors can help solve this problem. Capacitors store electricity as instant power available for your amplifier. The battery is not overloaded and the car voltage remains steady.
A common query that we receive after the installation of a high-end aftermarket car audio system is about a lack of power affecting performance. People may find that their headlights are dimming or that their audio system is not performing as it should. Ideally, this is something that would have been discussed and anticipated when the car audio system was being planned but that is often not the case. The answer to this problem lies in choosing either a capacitor or an additional battery for your car, with both options having some pros and cons that need to be understood. For people that are not too familiar with demanding car audio systems, it can seem counter-intuitive to them that their car battery is not powerful enough to provide the necessary juice to their system.
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