What is PWR in car audio?
2 Answers
In car audio systems, PWR refers to the button indicator on the car stereo. PWR: Press this button to turn on the system (any key on the panel can also turn it on), and hold this button for more than 1 second to turn it off. Other button indicators: 1. MUT: Press this button to mute the player. 2. BND: Press this button to select between 3 FM or 2 AM radio bands. 3. AMS: In radio mode, hold this button for more than 2 seconds to automatically save the received station in preset stations [1—6]. A short press cycles through preset stations [1—6], staying on each for 5 seconds; in MP3 mode, press this button to select the MP3 menu. 4. LOU: Boosts low-frequency loudness. 5. SEL/AF: Selects between AM or FM bands. 6. DSP: Tone effect.
I've been playing with car audio for quite some time and found that PWR generally refers to the power switch button, simply put, it's the kind that turns on with one press and off with another. Some high-end audio setup panels allow switching to power modes, such as Economy and Performance. The Economy mode is the most power-efficient, especially during frequent start-stop driving in the city—it's best not to overlook the issue of fast battery drain for protecting the battery. I prefer to try higher power output for stronger bass during long trips, but it's prone to overheating. It's advisable to check the fuses regularly. Otherwise, the car battery might not last until the destination, which is very frustrating. It's essential to develop the habit of turning off the audio when parking and also to inspect the wiring for aging during regular maintenance to avoid short-circuit troubles.
