However, in today’s vehicles, it can be harder to find a +12V wire for the remote on connection that turns on and off with the factory stereo or the ignition switch (normally the accessory position). In most vehicles, a +12V connection at the battery is relatively easy to find and route power wire to the amplifier mounting location you’ve chosen. An amplifier with a low-pass crossover feature and enough power to drive your subwoofer (150W RMS or above is recommended).An enclosure designed for bass to install the subwoofer in (or a preassembled subwoofer box).A speaker made for producing heavy bass (subwoofer).An audio signal source (radio/head unit) for the amplifier.+12V “remote on” lead to turn the amplifier on or off with the stereo or ignition.A good, solid connection to the car’s metal body.In order to help you understand the big picture I’ll explain the basic things we need for great sound and a successful installation: Electrical connections:
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