Speaker Aktif GMC Suaranya Kecil Banget

The GMC active speaker produces very low sound, almost no sound at all. When connected to an external sound source, such as via a cable from a smartphone, the sound is inaudible even at maximum volume. However, when using a card reader, the sound is faint, meaning all potential sources are not functioning. Here are the steps to fix it and restore normal sound. I hope this is helpful. Thanks for watching.