B&C Speaker 21IPAL
Subwoofer
21″ / 530 mm
Nominal diameter
37 Hz
Resonance
0.21
Q factor
97 dB
Sensitivity
± 22 mm
Linear excursion
5000 W
Program Power
![B&C Speaker 21IPAL Subwoofer](/BC/21IPAL/BC_21IPAL_(Photo_1).png)
![B&C Speaker 21IPAL Subwoofer](/BC/21IPAL/BC_21IPAL_(Photo_2).png)
![B&C Speaker 21IPAL Subwoofer](/BC/21IPAL/BC_21IPAL_(Photo_3).png)
- Amazon.com
- $$$$
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 96.6
- dB
- Frequency response
- 37 - 1000
- Hz
- Resonance frequency (free air)
- fS
- 37.0
- Hz
- Mechanical quality factor
- QMS
- 4.90
- Electrical quality factor
- QES
- 0.22
- Total quality factor
- QTS
- 0.21
- Maximum linear excursion
- xmax
- 22.0
- mm
- Air volume displaced at xmax
- VD
- 3696
- cm³
- Power handling
- P
- 2500
- W
- Program power
- Pmax
- 5000
- W
- Nominal impedance
- Z
- 1
- Ω
- DC resistance
- RE
- 0.7
- Ω
- Inductance (1kHz)
- LE
- 0.5
- mH
- VC Diameter
- 153
- mm
- Winding height
- HVC
- 48
- mm
- Winding material
- Aluminium
- Former material
- Glass Fibre
- Flux density
- B
- 1.35
- T
- Force factor
- Bl
- 19.1
- N/A
- Motor constant
- Bl/√RE
- 22.8
- N/√W
- Air gap height
- HAG
- 18
- mm
- Material
- Neodymium Inside Slug
- Effective diameter
- 462
- mm
- Effective area
- SD
- 1680
- cm²
- Moving mass
- MMS
- 487
- g
- Moving mass (without air load)
- MMD
- 438.8
- g
- Material
- Waterproof Both Sides
- Stiffness
- KMS
- 26.32
- N/mm
- Compliance
- CMS
- 38
- µm/N
- Equivalent volume to the compliance
- VAS
- 155
- L
- Mechanical resistance
- RMS
- 23.11
- N·s/m
- Spider material
- Silicone
- Nominal diameter
- 21
- ″
- 530
- mm
- Overall diameter
- 547
- mm
- Baffle cutout diameter
- 508
- mm
- Overall depth
- 269
- mm
- Flange thickness
- 13
- mm
- Mounting depth
- 256
- mm
- Volume occupied by the driver
- 16.0
- L
- Net weight
- 23.0
- kg
Available on (affiliate link)
Specifications
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![B&C Speaker 21IPAL Impedance](/BC/21IPAL/BC_21IPAL_(Impedance).png)
![B&C Speaker 21IPAL SPL](/BC/21IPAL/BC_21IPAL_(Frequency_response).png)
![B&C Speaker 21IPAL Dimensions](/BC/21IPAL/BC_21IPAL_(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)