What does REM mean in car subwoofers?
2 Answers
To be precise, it should be called the controller interface, which is the interface that controls the turning on and off of the subwoofer. More details about the REM in car subwoofers are as follows: 1. Introduction: REM is the interface that controls the turning on and off of the subwoofer; generally, the REM should be connected to the AMP or REM output of the player's main unit, which controls its turning on and off. If the main unit does not have this, it should be connected to the ACC. 2. Disadvantages: Although shorting it to a 12-volt interface can forcibly turn on the subwoofer, if it is a subwoofer for small cars, this connection method will continuously consume the battery's power. Over time, it may burn out the audio system and could also prevent the car from starting, so it is best to connect it to the main unit controller.
In car audio systems, especially when installing a subwoofer, the term REM is often mentioned. It actually refers to the Remote Turn-On Lead. Simply put, REM is a small wire that connects your car radio or head unit to the subwoofer amplifier, acting as a switch signal. When the radio is turned on, REM sends a low-voltage signal to tell the amplifier to power on as well, allowing the subwoofer to start working. When the radio is turned off, it ensures the amplifier shuts down promptly. This design prevents the amplifier from draining the battery after the vehicle is turned off, avoiding premature battery failure. When installing a subwoofer, correctly connecting the REM wire is crucial—it’s usually connected to a port labeled REM behind the radio. Improper handling or damaged wiring may cause the subwoofer to work intermittently or even affect overall sound quality. Having installed it a few times myself, I’ve found that using the right gauge of wire and ensuring secure connections can save a lot of trouble, as the bass effect while driving relies entirely on this. Regular checks of the wiring are recommended, especially after long trips.
