Eminence JS-1250
Guitar Speaker
12″ / 309 mm
Nominal diameter
92 Hz
Resonance
0.61
Q factor
100 dB
Sensitivity
± 0.79 mm
Linear excursion
100 W
Program Power
![Eminence JS-1250 Guitar Speaker](/Eminence/JS-1250/Eminence_JS-1250_(Photo_1).jpg)
![Eminence JS-1250 Guitar Speaker](/Eminence/JS-1250/Eminence_JS-1250_(Photo_2).jpg)
![Eminence JS-1250 Guitar Speaker](/Eminence/JS-1250/Eminence_JS-1250_(Photo_3).jpg)
- Amazon.com
- $$$
- Parts Express
- $$$
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 100.2
- dB
- Frequency response
- 80 - 5200
- Hz
- Resonance frequency (free air)
- fS
- 92.0
- Hz
- Mechanical quality factor
- QMS
- 15.69
- Electrical quality factor
- QES
- 0.63
- Total quality factor
- QTS
- 0.61
- Maximum linear excursion
- xmax
- 0.79
- mm
- Air volume displaced at xmax
- VD
- 41
- cm³
- Power handling
- P
- 50
- W
- Program power
- Pmax
- 100
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.4
- Ω
- Inductance (1kHz)
- LE
- 0.5
- mH
- VC Diameter
- 44
- mm
- Winding material
- Copper
- Former material
- Nomex
- Force factor
- Bl
- 12.91
- N/A
- Motor constant
- Bl/√RE
- 5.1
- N/√W
- Air gap height
- HAG
- 8
- mm
- Weight
- 1.077
- kg
- Material
- Ferrite
- Effective diameter
- 257
- mm
- Effective area
- SD
- 520
- cm²
- Moving mass
- MMS
- 28
- g
- Moving mass (without air load)
- MMD
- 19.6
- g
- Stiffness
- KMS
- 9.09
- N/mm
- Compliance
- CMS
- 110
- µm/N
- Equivalent volume to the compliance
- VAS
- 41.2
- L
- Mechanical resistance
- RMS
- 1.03
- N·s/m
- Surround material
- Full molded paper
- Nominal diameter
- 12
- ″
- 309
- mm
- Overall diameter
- 309
- mm
- Baffle cutout diameter
- 283
- mm
- Overall depth
- 133
- mm
- Volume occupied by the driver
- 2.0
- L
- Net weight
- 3.63
- kg
- Frame material
- Pressed steel
Available on (affiliate links)
Specifications
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Eminence JS-1250 SPL & Impedance](/Eminence/JS-1250/Eminence_JS-1250_(Frequency_response_+_Impedance).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)