T 250 4 OHM

Art. No. -
25 cm (10") woofer with red foam surround, coated cone, magnet vent and extended rear pole plate. High power handling and excellent value for money.No longer available.

Technical Data

Rated power
90 Watt
Maximum power
130 Watt
Nominal impedance Z
4 Ohm
Frequency response
31 - 2000 Hz
Mean sound pressure level
88 dB (1 W/ 1m)
Excursion limit
20 mm
Resonance frequency fs
31 Hz
Magnetic induction
1 Tesla
Magnetic flux
660 µ Weber
Height of front pole-plate
6 mm
Voice coil diameter
3.5 cm
Height of winding
1.2 cm
Cutout diameter
23.6 cm
Net weight
1.5 kg
D.C. resistance Rdc
3.8 Ohm
Mechanical Q factor Qms
3.31
Electrical Q factor Qes
0.78
Total Q factor Qts
0.63
Equivalent volume Vas
159 l
Effective piston area Sd
353 cm2
Dynamically moved mass Mms
29 g
Force factor Bxl
5.2 T · m
Inductance of the voice coil L
0.52 mH
Frequency- and impedance response