JL Audio 12TW3-D4
2x4Ω
2x8ΩSubwoofer
12″ / 300 mm
Nominal diameter
26 Hz
Resonance
0.53
Q factor
84 dB
Sensitivity
± 15.2 mm
Linear excursion
800 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 84.0
- dB
- Resonance frequency (free air)
- fS
- 26.5
- Hz
- Mechanical quality factor
- QMS
- 10.77
- Electrical quality factor
- QES
- 0.56
- Total quality factor
- QTS
- 0.53
- Maximum linear excursion
- xmax
- 15.2
- mm
- Air volume displaced at xmax
- VD
- 819
- cm³
- Power handling
- P
- 400
- W
- Program power
- Pmax
- 800
- W
- Nominal impedance
- Z
- 2 x 4
- Ω
- DC resistance (in series)
- RE
- 9.3
- Ω
- Inductance (1kHz, in series, estimated)
- LE
- 4.26
- mH
- Force factor (in series)
- Bl
- 29.1
- N/A
- Motor constant
- Bl/√RE
- 9.55
- N/√W
- Diameter
- 156
- mm
- Effective diameter
- 262
- mm
- Effective area
- SD
- 539
- cm²
- Moving mass
- MMS
- 306.6
- g
- Moving mass (without air load)
- MMD
- 297.6
- g
- Stiffness
- KMS
- 8.48
- N/mm
- Compliance
- CMS
- 118
- µm/N
- Equivalent volume to the compliance
- VAS
- 48.7
- L
- Mechanical resistance
- RMS
- 4.73
- N·s/m
- Nominal diameter
- 12
- ″
- 300
- mm
- Overall diameter
- 318
- mm
- Baffle cutout diameter
- 295
- mm
- Mounting depth
- 89
- mm
- Volume occupied by the driver
- 0.82
- L
- Net weight
- 6.8
- kg