Have you ever noticed that your smartphone loses charge over a long car journey, even when you’ve had it plugged in to the cigarette lighter? Remember: Your car audio system is running mainly off your alternator, not your battery because its voltage potential is 12.7 V, whereas your alternator supplies 14.5 V. Since the alternator has the highest potential, it will supply the demanded current up to its point of saturation, whereby the battery takes over to supply the extra spikes of current demand.
Kicker amps (and the car speakers for bass , subwoofers , and competition sound equipment that Kicker produces) are also available at almost unbelievably low prices – and incredibly accessible since pretty much every Walmart on the planet sells this merchandise.
Even though this 800-watt Rockford Fosgate P2D4-12 Punch car sub-woofer is not as powerful as some models listed herein, its reliability, sound quality, and dependable 12-inch design has earned it a permanent spot among the best of the best in this industry.
Before doing absolutely anything else (and especially before pulling the trigger on the purchase of any Kicker amplifiers, speakers, or other sound equipment from any other brand), you need to be completely certain that your car is in perfect shape of electrically.
Using a mains transformer with a secondary winding rated at the common value of 25 + 25V (or 24 + 24V) and 100/120VA power, two amplifiers can be driven at 45W and 69W output power into 8 and 4 Ohms respectively, with very low distortion (less than 0.01% @ 1kHz and 20W into 8 Ohms).