13 KS Features:
 

130mm (5") subwoofer

40mm (1") Voice Coil

100mm (4") Magnet

180 Watts Max Power Handling

80 Watts Nominal Power Handling

85dB Sensitivity (2.8 V/1m)

50Hz-2kHz Frequency Response

Suitable For Closed Box Applications 5-8 Liters

27 KX Features:
 

11" Poly-Kevlar Subwoofer

2-1/2" voice coil

6" magnet

Max. power handling: 600W

Nominal power handling: 300W

Sensitivity (2.8 V/1m): 88dB

Frequency response: 35Hz-1.5kHz 

33 KX Features:
 

13" Poly-Kevlar Subwoofer

2.5" voice coil

Max. power handling: 800W

Nominal power handling: 400W

Sensitivity (2.8 V/1m): 90dB

Frequency response: 30Hz-1.0kHz