中音單元 | 120W 峰值功率 | 100 mm | 4Ω
 
AP 4 中低音單元提供極為寬廣的頻率響應，涵蓋高頻與低頻，同時具備高效率表現。採用 25 mm 純銅音圈，確保中高頻範圍的平衡音效。
 
Mid Range | 120 W Peak Power | 100 mm | 4 ohm
 
The AP 4 midbass offers very extended frequency response, both in high and low frequencies, combined with high efficiency and features a 25 mm pure copper voice coil to ensure more balance in mid-high frequency ranges.