SpeakerCompare gives you a way of the sonic variations. But efficiency in the real earth is influenced through the acoustics of your vehicle or house, your decision of amplification, along with your source substance.L?ch quay m? th??ng x? s? Mi?n B?c theo th? t? t? th? 2 ??n Ch? Nh?t cho các t?nh trong tu?n ?ó là:x? s? tr?c ti?p mi?n b?c th? t?