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 ST100 Front 1"*1 / 6. 5"*2 4 Ω 200W 87+/-3db 400HZ-20000HZ 1100HZ No SC100 Center 1"* 1 / 6. 5"*2 8 Ω 125W 90+/-3db 300HZ-28000HZ 1700HZ Yes SS100 Sat 1"*1 / 6. 5"*2 4 Ω 125W 87+/-3db 150HZ-20000HZ 1000HZ No