TIW 250 XS - 8 Ohm

Art. No. 1342

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 capton 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.

Volume/Principle BR-Channel fb fc/QTC
30 l/closed - - 59 Hz/0,59
50 l/closed - - 50 Hz/0,5
70 l/closed - - 46 Hz/0,46
30 l/bass reflex BR 15.34 (length 13 cm) 42 Hz -
50 l/bass reflex BR 15.34 (length 12 cm) 36 Hz -
70 l/bass reflex BR 15.34 (length 9 cm) 32 Hz -

Technical Data

Rated power
200 W
Maximum power
300 W
Nominal impedance Z
8 Ohm
Frequency response
fu–3000 Hz
(fu: Lower cut-off frequency depending on cabinet)
Mean sound pressure level
89 dB (1 W/1 m)
Excursion limit
+/−14 mm
Resonance frequency fs
33 Hz
Magnetic induction
1.3 T
Magnetic flux
1600 µWb
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
D.C. resistance Rdc
5.6 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
66 l
Effective piston area Sd
314 cm²
Dynamically moved mass Mms
49 g
Force factor Bxl
13 Tm
Inductance of the voice coil L
1.7 mH
Frequency- and impedance response
Waterfall spectrum