Full-range
4″ / 102 mm
Nominal diameter
75 Hz
Resonance
0.38
Q factor
89 dB
Sensitivity
± 3 mm
Linear excursion
50 W
Program Power
![Tang Band W4-1320SJF Full-range](/TangBand/W4-1320SJF/TangBand_W4-1320SJF_(Photo_1).png)
![Tang Band W4-1320SJF Full-range](/TangBand/W4-1320SJF/TangBand_W4-1320SJF_(Photo_2).png)
![Tang Band W4-1320SJF Full-range](/TangBand/W4-1320SJF/TangBand_W4-1320SJF_(Photo_3).png)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 89.3
- dB
- Frequency response
- 75 - 20000
- Hz
- Resonance frequency (free air)
- fS
- 75.0
- Hz
- Mechanical quality factor
- QMS
- 2.40
- Electrical quality factor
- QES
- 0.45
- Total quality factor
- QTS
- 0.38
- Maximum linear excursion
- xmax
- 3.0
- mm
- Air volume displaced at xmax
- VD
- 17
- cm³
- Power handling
- P
- 25
- W
- Program power
- Pmax
- 50
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.3
- Ω
- Inductance (1kHz)
- LE
- 0.02
- mH
- VC Diameter
- 25
- mm
- Force factor
- Bl
- 5.14
- N/A
- Motor constant
- Bl/√RE
- 2.05
- N/√W
- Air gap height
- HAG
- 10
- mm
- Material
- Ferrite
- Effective diameter
- 85
- mm
- Effective area
- SD
- 57
- cm²
- Moving mass
- MMS
- 4
- g
- Moving mass (without air load)
- MMD
- 3.7
- g
- Material
- Paper
- Stiffness
- KMS
- 0.88
- N/mm
- Compliance
- CMS
- 1134
- µm/N
- Equivalent volume to the compliance
- VAS
- 5.23
- L
- Mechanical resistance
- RMS
- 0.78
- N·s/m
- Surround material
- Rubber
- Nominal diameter
- 4
- ″
- 102
- mm
- Volume occupied by the driver (estimated)
- 0.75
- L
- Net weight
- 1.823
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Tang Band W4-1320SJF SPL & Impedance](/TangBand/W4-1320SJF/TangBand_W4-1320SJF_(Frequency_response_+_Impedance).png)
![Tang Band W4-1320SJF Dimensions](/TangBand/W4-1320SJF/TangBand_W4-1320SJF_(Dimensions).png)
Export this driver to a simulation software:
![WinISD](/images/export/WinISD.png)
![Basta!](/images/export/Basta.png)
![Hornresp](/images/export/Hornresp.png)
![QSpeakers](/images/export/QSpeakers.png)
![SpeakerSim](/images/export/SpeakerSim.png)
![MfbLabs](/images/export/MfbLabs.png)
![Speakerbench](/images/export/Speakerbench.png)