W 170 4 OHM

17 cm (6.5") HiFi woofer with very good price/performance ratio. Suitable for simple 2-way speakers and car rear tray systems. Especially suited als replacement driver for many HiFi speakers.

No longer available.

sketch

frequency- and impedance response

Technical Data:
Rated power	40 W
Maximum power	70 W
Nominal impedance Z	4 Ohm
Frequency response	fu–6000 Hz
(fu: Lower cut-off frequency depending on cabinet)	.
Mean sound pressure level	87 dB (1 W/1 m)
Excursion limit	15 mm
Resonance frequency fs	68 Hz
Magnetic induction	1,0 T
Magnetic flux	240 µWb
Height of front pole-plate	3 mm
Voice coil diameter	25 mm
Height of winding	7 mm
Cutout diameter	143 mm
Net weight	0,77 kg
D.C. resistance Rdc	3,7 Ohm
Mechanical Q factor Qms	3,84
Electrical Q factor Qes	0,95
Total Q factor Qts	0,76
Equivalent volume Vas	17,3 l
Effective piston area Sd	137 cm²
Dynamically moved mass Mms	8,3 g
Force factor Bxl	3,7 T m
Inductance of the voice coil L	0,47 mH

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