How to connect audio input without an aux interface in the car?
2 Answers
If there is no aux interface in the car, you can use a cigarette lighter to aux interface converter, and then connect the audio input. Here are the specific details about the aux interface: 1. Introduction: The AUX interface (Auxiliary) refers to an audio input interface that can output audio from electronic audio devices including mp3 (generally a headphone jack), allowing the music from these devices to be played through the car's sound system. 2. Usage: In general audio equipment, in addition to the official output and input terminals, there are often several terminals labeled "Aux" as standby connection terminals. When there is a special application, such as needing additional sound output or input, these terminals can be used. These standby terminals or lines, regardless of input or output, are collectively referred to as Aux.
I remember when cars didn't have AUX ports, we had to find alternative ways to connect audio inputs. As someone who loves tinkering with tech, I recommend a few methods: First, use an FM transmitter plugged into the cigarette lighter. Connect your phone via Bluetooth or a 3.5mm cable to the transmitter, which sends the signal to a quiet frequency on your car radio, like around 87.5MHz, to avoid interference with local stations. This is the cheapest and easiest solution, costing around 30 yuan, but the signal quality depends on the surrounding electromagnetic environment. Second, a Bluetooth receiver powered by the cigarette lighter pairs with your phone for wireless playback—simple to use and great for daily commutes. Third, if your car has a USB port, you can directly connect your phone to play music files, but make sure the head unit supports audio input. Advanced methods include using a cigarette lighter expander with AUX or modifying the head unit, but these are costly and may require professional help. In short, spending a little on the right adapter makes listening to music while driving much easier.
