55-5190

The WS 20-E is a hifi speaker with a polypropylene cone. Due to its balanced frequency response curve, it is suitable for 2-way-applications up to 2000 Hz and as a low-midrange driver for large 4-way speaker systems as well. Due to the special basket design it is also suitable as a replacement driver for many HiFi speakers.

• Rated power 80 W
• Maximum power 120 W
• Nominal impedance Z 8 Ohm
• Frequency response fu-7000 Hz
• (fu: Lower cut-off frequency depending on cabinet) .
• Mean sound pressure level 88 dB (1 W/1 m)
• Opening angle (-6 dB) 67°/4000 Hz
• Excursion limit +/- .24"
• Resonance frequency fs 47 Hz
• Magnetic induction 0,85 T
• Magnetic flux 400 µWb
• Height of front pole-plate .2"
• Voice coil diameter 1.18"
• Height of winding .43"
• Cutout diameter 7.32"
• Net weight 2.86 lbs
• D.C. resistance Rdc 6,8 Ohm
• Mechanical Q factor Qms 5,36
• Electrical Q factor Qes 1,59
• Total Q factor Qts 1,23
• Equivalent volume Vas 44 l
• Effective piston area Sd 37.2 in²
• Dynamically moved mass Mms .74 oz
• Force factor Bxl 5,5 T m
• Inductance of the voice coil L 1,0 mH