Presonus ULT18s 18 "مضخم صوت نشط ، مضخم صوت مخصص 18 .
Presonus ULT18s 18" Active Subwoofer, 18" Custom Woofer, 2,000W Class D Power, 2 XLR/¼" Combo Inputs with Direct Outputs, Variable Low Pass Filter, Defeatable FrontPanel LED, Black | ULT18s model ULT18s Studio Monitors