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.

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
Show all data

sketch

frequency- and impedance response