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Visaton Speaker Driver - TIW 250 XS - 8 Ohm High End Woofer
Art. No. 1342
Characteristics and Sound Properties
25 cm (10") high-end woofer. The extra-wide elastic
surround, the long voice coil and particularly large magnet arrangement give this speaker extremely long excursion.
Thanks to the multiple venting of the voice coil (pole piece hole, holes in the pole piece plate, cutouts in the aluminium
diecast basket to vent the spider from behind) losses and flow noise are minimised. The Kapton voice coil carrier and the
long voice coil enable the driver to withstand considerable loads.
The diaphragm is a sandwich construction made
up of layers of fibreglass and polyester fabric which makes it particularly and low in resonance. These design features
result in high level-accuracy and excellent low-range bass imaging.
Technical Specifications
| Rated power | 200 W |
| Maximum power | 300 W |
| Nominal impedance Z | 8 Ohm |
| Frequency response (fu: Lower cut-off frequency depending on cabinet) |
fu-3000 Hz |
| Mean sound pressure level | 89 dB (1W/1m) |
| Excursion limit | ± 14 mm |
| Resonance frequency fs | 33 Hz |
| Magnetic induction | 1.3 T |
| Magnetic flux | 1600 uWb |
| Height of front pole-plate | 8 mm |
| Voice coil diameter | 50 mm |
| Height of winding | 25 mm |
| Cutout diameter | 235 mm |
| Net weight | 5.3 kg |
| DC resistance Rdc | 5.6 Ohm |
| Mechanical Q factor Qms | 5.21 |
| Electrical Q factor Qes | 0.35 |
| Total Q factor Qts | 0.33 |
| Equivalent volume Vas | 66 litres |
| Effective piston area Sd | 314 cm2 |
| Dynamically moved mass Mms | 49 grams |
| Force factor Bxl | 13 Tm |
| Inductance of the voice coil L | 1.7 mH |
| Connections | Spring terminals |
Recommended Cabinet Sizes
| Volume / Principle | BR Port | fb | fc / QTC |
| 30 litre / closed | - | - | 59 Hz / 0.59 |
| 50 litre / closed | - | - | 50 Hz / 0.5 |
| 70 litre / closed | - | - | 46 Hz / 0.46 |
| 30 litre / bass reflex | BR 15.34 (length 13 cm) | 42 Hz | - |
| 50 litre / bass reflex | BR 15.34 (length 12 cm) | 36 Hz | - |
| 70 litre / bass reflex | BR 15.34 (length 9 cm) | 32 Hz | - |
fc = System resonance (sealed box system)
QTC = The system's Q at resonance (fc)
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