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Visaton Speaker Driver - W 170 S - 8 Ohm HiFi Woofer
Art. No. 9025
Characteristics and Sound Properties
17 cm (6.5") HiFi woofer with coated paper cone, powerful drive and extended rear pole plate. Special voice-coil and elastic rubber surround for long strokes.
Technical Specifications
| Rated power | 50 W |
| Maximum power | 80 W |
| Nominal impedance Z | 8 Ohm |
| Frequency response (fu: Lower cut-off frequency depending on cabinet) |
fu-8000 Hz |
| Mean sound pressure level | 86 dB (1W/1m) |
| Dispersion angle (-6 dB) | 72°/4000 Hz |
| Excursion limit | ± 10 mm |
| Resonance frequency fs | 36 Hz |
| Magnetic induction | 1.0 T |
| Magnetic flux | 314 uWb |
| 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 |
| DC 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 litres |
| Effective piston area Sd | 129 cm2 |
| Dynamically moved mass Mms | 13 grams |
| Force factor Bxl | 5.4 Tm |
| Inductance of the voice coil L | 1.2 mH |
| Connections | 4.8 x 0.8 mm (+) 2.8 x 0.8 mm (-) |
Recommended Cabinet Sizes
| Volume / Principle | BR Port | fb | fc / QTC |
| 20 litre / closed | - | - | 61 Hz / 0.88 |
| 20 litre / bass reflex | BR 19.24 (length 14 cm) | 44 Hz | - |
| 30 litre / bass reflex | BR 15.34 (length 12 cm) | 39 Hz | - |
| 50 litre / bass reflex | BR 15.34 | 33 Hz | - |
fc = System resonance (sealed box system)
QTC = The system's Q at resonance (fc)
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