Speaker

21020214 and 21020834 - 6.0 Inch Round, VCS (vehicle Countour Speaker)
Nominal Impedance @ 400 HZ 10 Ohms +/-10%
Power Rating 15 Watts
Resonant Frequency 91 Hz +/-15%
Sensitivity 90.0 dB +/-2.0dB

21020210 - 6.0 Inch Round, COAXIAL
Nominal Impedance @ 400 HZ 6 Ohms +/-10%
Power Rating 25 Watts
Resonant Frequency 60 Hz +/-15%
Sensitivity 91.0 dB +/-2.0dB
Crossover Order: First
Crossover Frequency: 56 Hertz
Capacitor Value: 4.7micro
Inductor Value: None

21020354 - 6.0 Inch Round, ERS (Extended Range Speaker)
Nominal Impedance @ 400 HZ 6 Ohms +/-10%
Power Rating 25 Watts
Resonant Frequency 70 Hz +/-15%
Sensitivity 91.5 dB +/-2.0dB