Dotech MKII woofer features a double magnet drive motor and a large 54mm (2 1/8") diameter aluminum Hexatech voice coil, providing better cone support and higher power handling. The use of Morel 's CAR Filter technology improves the Dotech MKII acoustical loading and enhances the woofer 's ability to perform well in free-air environments.

The Dotech MKII woofers are available in 4", 5" and 6" diameter.

SPECIFICATIONS	DOTECH MKII 4" WOOFER	DOTECH MKII 5" WOOFER	DOTECH MKII 6" WOOFER
Nominal Impedance	4 Ohm	4 Ohm	4 Ohm
Power Handling	100W	120W	140W
Max. Transient Power Handling	300W	300W	300W
Sensitivity (2.83V/1M)	88dB	90dB	90dB
Frequency Response	50-4000Hz	45-4500Hz	40-4000Hz
FS	95Hz	70Hz	57Hz
Voice Coil Diameter	54mm (2 1/8")	54mm (2 1/8")	54mm (2 1/8")
Voice Coil Height	8mm (5/16")	10.5mm (3/8")	10.5mm (3/8")
Voice Coil Type/Former	Aluminum	Aluminum	Aluminum
Voice Coil Wire	Hexatech Aluminum	Hexatech Aluminum	Hexatech Aluminum
DC Resistance	3.0 Ohm	3.2 Ohm	3.2 Ohm
Voice Coil Inductance @1kHz	0.17 MH	0.20 MH	0.20 MH
Magnet System	Double ferrite rear vented	Double ferrite rear vented	Double ferrite rear vented
HE-Magnetic Gap Height	4mm (1/5")	4mm (1/5")	4mm (1/5")
B-Flux Density	0.65T	0.65T	0.65T
BL Product/BXL	2.53	2.76	2.97
Max. Linear Excursion/Xmax	4mm (±2mm)	5.5mm (±2.75mm)	5.5mm (±2.75mm)
Suspension Compliance CMS	456	629	767
Mechanical Q Factor QES	1.41	1.38	1.35
Total Q Factor Q/T	0.98	1.04	1.09
QMS	3.29	4.19	5.60
Mechanical Resistance RMS	0.39kgS¹	0.36kgS¹	0.32kgS¹
Moving Mass MMS	4.35gr (0.15oz)	6.95gr (0.25oz)	10.0gr (0.35oz)
Equivalent Car Air Load VAS	2.68L (0.09ft³)	7.16L (0.25ft³)	15.30L (0.54ft³)
Effective Pison Area SD	64cm² (9.92in²)	90cm² (13.95in²)	119cm² (18.45in²)
Cone Material	Composite cellular fiber	Composite cellular fiber	Composite cellular fiber
Unit Diameter	104mm (4")	135mm (5¼")	165mm (6½")
Mounting Depth	50mm (2")	60mm (2.36")	60mm (2.36")
Mounting Cutout	95mm (3¾")	120mm (4¾")	141mm (5½")
Net Weight	0.54kg (1.91lb)	0.55kg (1.21lb)	0.60kg (1.32lb)