KST-34 
Size 1.35"Voice coil
RMS Power:150w
Max Power:300w
Sensitivity:105dB
Magnet:12.5oz
Impedance:8Ω   

KST-35 
Size 1.75"Voice coil
RMS Power:150w
Max Power:300w
Sensitivity:107dB
Magnet:20oz
Impedance:8Ω