Click here to return to the library. Customers often ask us if they need to add an extra battery or two when installing a large car audio system that includes multiple amps, speakers, and subwoofers? Deciding to add an extra battery is dictated by the system and how it will be used, and an alternator upgrade may be a more important consideration. Your car is setup from the factory with a battery whose primary function is to start the engine. The car has an alternator that keeps the battery charged and supplies power to anything on the electrical system, while the engine is running. Adding a battery to your current car electrical system will store more power, but it will also increase the load to the alternator.
6 Ways to Install a Multiple Component Car Audio System - wikiHow
Installing Multiple Amplifiers There seems to be some confusion when it comes to installing more than one amplifier. Should you use one power wire or multiple wires? Do you ground everything to the same point? How do you split the low level signal? Let me share my thoughts on the topic of installing multiple amplifiers.
Certain after-market stereo head units may feature several RCA output connections, located at the rear of the device, specifically design for external amplifiers. Connecting multiple amplifiers to an RCA audio source will provide superior signal quality over speaker level connections from the stereo head unit. Preparation Turn off the vehicle and open the hood. Certain head units may include one or several RCA outputs, providing separate signals for the front and rear speaker channels, while a third subwoofer channel will handle low frequency sounds. Refer to the installation and removal instructions for the head unit for specific guidelines needed to slide the unit out from the mounting chassis.