Nominal impedance

•  4 Ohm (1)
•  16 Ohm (1)

Voice coil diameter

•  1" (25mm) (1)
•  1,4" (36mm) (1)
•  1,5" (38mm) (1)
•  1,7" (44,4mm) (2)
•  2" (51mm) (3)
•  2,5" (65mm) (2)
•  3" (75mm) (7)
•  4" (100mm) (8)
•  4,5" (115mm) (1)