Guitar Speaker
12″ / 306 mm
Nominal diameter
74 Hz
Resonance
0.9
Q factor
95 dB
Sensitivity
± 1.5 mm
Linear excursion
140 W
Program Power
![Jensen Mod 12-70 Guitar Speaker](/Jensen/Mod12-70_4Ω/Jensen_Mod12-70_4Ω_(Photo_1).png)
![Jensen Mod 12-70 Guitar Speaker](/Jensen/Mod12-70_4Ω/Jensen_Mod12-70_4Ω_(Photo_2).png)
![Jensen Mod 12-70 Guitar Speaker](/Jensen/Mod12-70_4Ω/Jensen_Mod12-70_4Ω_(Photo_3).png)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 95.1
- dB
- Resonance frequency (free air)
- fS
- 74.0
- Hz
- Mechanical quality factor
- QMS
- 14.63
- Electrical quality factor
- QES
- 0.96
- Total quality factor
- QTS
- 0.90
- Maximum linear excursion
- xmax
- 1.5
- mm
- Air volume displaced at xmax
- VD
- 74
- cm³
- Power handling
- P
- 70
- W
- Program power
- Pmax
- 140
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.5
- Ω
- Inductance (1kHz)
- LE
- 0.43
- mH
- VC Diameter
- 38
- mm
- Winding material
- Copper
- Former material
- Epotex
- Flux density
- B
- 1.16
- T
- Force factor
- Bl
- 7.23
- N/A
- Motor constant
- Bl/√RE
- 3.85
- N/√W
- Weight
- 0.64
- kg
- Material
- Ferrite
- Effective diameter
- 250
- mm
- Effective area
- SD
- 491
- cm²
- Moving mass
- MMS
- 30.6
- g
- Moving mass (without air load)
- MMD
- 22.8
- g
- Material
- Paper
- Stiffness
- KMS
- 6.62
- N/mm
- Compliance
- CMS
- 151
- µm/N
- Equivalent volume to the compliance
- VAS
- 51.7
- L
- Mechanical resistance
- RMS
- 0.97
- N·s/m
- Surround material
- Integrated Paper
- Nominal diameter
- 12
- ″
- 306
- mm
- Overall diameter
- 306
- mm
- Volume occupied by the driver (estimated)
- 1.0
- L
- Net weight
- 2.4
- kg
- Frame material
- Pressed Sheet
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Jensen Mod 12-70 Dimensions](/Jensen/Mod12-70_4Ω/Jensen_Mod12-70_4Ω_(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)