Focal ACCESS 25 A4
Subwoofer
10″ / 250 mm
Nominal diameter
24 Hz
Resonance
0.51
Q factor
83 dB
Sensitivity
± 8.5 mm
Linear excursion
400 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 82.7
- dB
- Frequency response
- 36 - 500
- Hz
- Resonance frequency (free air)
- fS
- 23.5
- Hz
- Mechanical quality factor
- QMS
- 5.06
- Electrical quality factor
- QES
- 0.56
- Total quality factor
- QTS
- 0.51
- Maximum linear excursion
- xmax
- 8.5
- mm
- Air volume displaced at xmax
- VD
- 281
- cm³
- Power handling
- P
- 200
- W
- Program power
- Pmax
- 400
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 4.2
- Ω
- Inductance (1kHz)
- LE
- 2.85
- mH
- VC Diameter
- 50
- mm
- Winding height
- HVC
- 25
- mm
- Winding material
- Copper
- Former material
- Kapton
- Flux density
- B
- 0.8
- T
- Force factor
- Bl
- 12.45
- N/A
- Motor constant
- Bl/√RE
- 6.08
- N/√W
- Air gap height
- HAG
- 8
- mm
- Diameter
- 120
- mm
- Height
- 30
- mm
- Weight
- 1.25
- kg
- Effective diameter
- 205
- mm
- Effective area
- SD
- 330
- cm²
- Moving mass
- MMS
- 140.8
- g
- Moving mass (without air load)
- MMD
- 136.3
- g
- Material
- Dual Fiberglass Structure
- Stiffness
- KMS
- 3.07
- N/mm
- Compliance
- CMS
- 326
- µm/N
- Equivalent volume to the compliance
- VAS
- 49.9
- L
- Mechanical resistance
- RMS
- 4.109
- N·s/m
- Surround material
- Butyl
- Nominal diameter
- 10
- ″
- 250
- mm
- Overall diameter
- 260
- mm
- Baffle cutout diameter
- 230
- mm
- Mounting depth
- 127
- mm
- Volume occupied by the driver (estimated)
- 1.5
- L
- Net weight
- 3.5
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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