Precision Devices PD.184C002
Subwoofer
18″ / 457 mm
Nominal diameter
40 Hz
Resonance
0.34
Q factor
98 dB
Sensitivity
± 9.7 mm
Linear excursion
1800 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 97.6
- dB
- Frequency response
- 30 - 500
- Hz
- Resonance frequency (free air)
- fS
- 40.0
- Hz
- Mechanical quality factor
- QMS
- 5.67
- Electrical quality factor
- QES
- 0.36
- Total quality factor
- QTS
- 0.34
- Maximum linear excursion
- xmax
- 9.7
- mm
- Air volume displaced at xmax
- VD
- 1117
- cm³
- Power handling
- P
- 900
- W
- Program power
- Pmax
- 1800
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.2
- Ω
- Inductance (1kHz)
- LE
- 2.31
- mH
- VC Diameter
- 102
- mm
- Winding height
- HVC
- 26
- mm
- Winding material
- Copper Flat Wire
- Former material
- Glass Fibre
- Flux density
- B
- 1.1
- T
- Force factor
- Bl
- 21.0
- N/A
- Motor constant
- Bl/√RE
- 9.21
- N/√W
- Air gap height
- HAG
- 13
- mm
- Weight
- 3.3
- kg
- Material
- Ceramic
- Effective diameter
- 383
- mm
- Effective area
- SD
- 1152
- cm²
- Moving mass
- MMS
- 112
- g
- Moving mass (without air load)
- MMD
- 83.5
- g
- Material
- Fibre loaded Paper
- Stiffness
- KMS
- 7.09
- N/mm
- Compliance
- CMS
- 141
- µm/N
- Equivalent volume to the compliance
- VAS
- 268
- L
- Mechanical resistance
- RMS
- 4.96
- N·s/m
- Nominal diameter
- 18
- ″
- 457
- mm
- Overall diameter
- 474
- mm
- Baffle cutout diameter
- 414
- mm
- Overall depth
- 176
- mm
- Flange thickness
- 15
- mm
- Mounting depth
- 161
- mm
- Volume occupied by the driver (estimated)
- 7.3
- L
- Net weight
- 15.5
- kg