Model No. Application Tweeter Mid-Range Woofer Impedance Max Power Sensitivity Frequency Response Crossover Frequency Magnetic Shielding Product Dimension (H*W*D)mm Net Weight DT300 Front 20φ / 3" *3 4 Ω 65W 87+/-3db 100HZ-20000HZ Yes (1200*115*119)mm DC300 Center 20φ / 3" * 2 4 Ω 50W 83+/-3db 120HZ-20000HZ Yes (115*400*119)mm DS300 Sat 20φ / 3" *2 4 Ω 50W 83+/-3db 120HZ-20000HZ Yes (1200*115*119)mm DSUB300 SUB Woofer / / 8" * 1 4 Ω 100W 85+/-3db 48HZ-180HZ No (395*380*395)mm