Morel Ultimate UW 1258
Subwoofer
12″ / 305 mm
Nominal diameter
21 Hz
Resonance
0.43
Q factor
86 dB
Sensitivity
± 12.5 mm
Linear excursion
1600 W
Program Power
![Morel UW 1258 Subwoofer](/Morel/UW_1258/Morel_UW_1258_(Photo_1).jpg)
![Morel UW 1258 Subwoofer](/Morel/UW_1258/Morel_UW_1258_(Photo_2).jpg)
![Morel UW 1258 Subwoofer](/Morel/UW_1258/Morel_UW_1258_(Photo_4).jpg)
- Parts Express
- $$$
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 85.9
- dB
- Resonance frequency (free air)
- fS
- 21.0
- Hz
- Mechanical quality factor
- QMS
- 1.88
- Electrical quality factor
- QES
- 0.56
- Total quality factor
- QTS
- 0.43
- Maximum linear excursion
- xmax
- 12.5
- mm
- Air volume displaced at xmax
- VD
- 546
- cm³
- Power handling
- P
- 800
- W
- Program power
- Pmax
- 1600
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.8
- Ω
- Inductance (1kHz)
- LE
- 1.33
- mH
- VC Diameter
- 130
- mm
- Winding height
- HVC
- 37
- mm
- Winding material
- Hexatech™ Aluminum
- Former material
- Aluminum
- Flux density
- B
- 0.64
- T
- Force factor
- Bl
- 13.67
- N/A
- Motor constant
- Bl/√RE
- 5.24
- N/√W
- Air gap height
- HAG
- 12
- mm
- Material
- High flux double ferrite vented
- Effective diameter
- 236
- mm
- Effective area
- SD
- 437
- cm²
- Moving mass
- MMS
- 105.5
- g
- Moving mass (without air load)
- MMD
- 98.6
- g
- Material
- Composite cellular fiber
- Stiffness
- KMS
- 2.27
- N/mm
- Compliance
- CMS
- 440
- µm/N
- Equivalent volume to the compliance
- VAS
- 138
- L
- Mechanical resistance
- RMS
- 8.15
- N·s/m
- Nominal diameter
- 12
- ″
- 305
- mm
- Overall diameter
- 305
- mm
- Baffle cutout diameter
- 270
- mm
- Overall depth
- 154
- mm
- Flange thickness
- 6
- mm
- Mounting depth
- 148
- mm
- Volume occupied by the driver (estimated)
- 2.8
- L
- Net weight
- 6.3
- kg
Available on (affiliate link)
Specifications
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Morel UW 1258 Impedance](/Morel/UW_1258/Morel_UW_1258_(Impedance).jpg)
![Morel UW 1258 SPL](/Morel/UW_1258/Morel_UW_1258_(Frequency_response).jpg)
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)