Loudspeaker parameters

Loudspeaker that is used to illustrate speaker system responses is Visaton 170S whose parameters are:

Rated power 50 W, Maximum power 80 W

Nominal impedance Z 8 Ohm

Frequency response fu-8000 Hz (fu : Lower cut-off frequency depending on a cabinet)

Mean sound pressure level 86 dB (1 W/1 m), Opening angle (-6 dB) 72°/4000 Hz

Excursion limit ± 10 mm

Resonance frequency fs 36 Hz

Magnetic induction 1,0 T, Magnetic flux 314 µWb

Height of front pole-plate 4 mm, Voice coil diameter 25 mm

Height of winding 12,5 mm, Cutout diameter 148 mm

Net weight 1,1 kg

D.C. resistance Rdc 5,9 Ohm

Mechanical Q factor Qms 2,43, Electrical Q factor Qes 0,66, Total Q factor Qts 0,52

Equivalent volume Vas 38 l

E?ective piston area Sd 129 cm²

Dynamically moved mass Mms 13 g

Force factor Bl 5,4 Tm

Inductance of the voice coil L 1,2 mH