Yazli music system The Android LCD Unit

Most modern units run a version of Android which acts as the "brain."

• Touchscreen: Usually 9 inches with an IPS or Gorilla Glass display. 

• Connectivity: Supports Bluetooth, Wi-Fi (for YouTube/Spotify), and often Wireless Android

• Subwoofer In the Android "Sound" or "EQ" menu, you can usually adjust the Subwoofer Gain and Low Pass Filter (LPF) to ensure only deep bass goes to the sub.

Speaker Surround Effect

Standard car systems are 4.1 (4 speakers + 1 sub), but you can simulate a surround environment:

• Equalizer (EQ): Use the "Field" or "Fader" settings to shift the sound toward the center of the cabin.

• Surround Modes: Many Android units have a "Surround" toggle. While not true 5.1 cinema sound, it uses phase-shifting to make the music feel like it's "widening" beyond the speakers.

• Speaker Placement: For the best effect, ensure your front speakers handle the mid-highs (vocals/instruments) while the rear speakers provide the fill.