Scan-Speak Discovery 22W/4534G00
Woofer
8″ / 220 mm
Nominal diameter
30 Hz
Resonance
0.34
Q factor
90 dB
Sensitivity
± 5.7 mm
Linear excursion
120 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 89.7
- dB
- Frequency response
- 30 - 5000
- Hz
- Resonance frequency (free air)
- fS
- 30.0
- Hz
- Mechanical quality factor
- QMS
- 3.70
- Electrical quality factor
- QES
- 0.37
- Total quality factor
- QTS
- 0.34
- Maximum linear excursion
- xmax
- 5.7
- mm
- Maximum excursion before damage
- xlim
- 12.0
- mm
- Air volume displaced at xmax
- VD
- 134
- cm³
- Power handling
- P
- 70
- W
- Program power
- Pmax
- 120
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.0
- Ω
- Inductance (1kHz, estimated)
- LE
- 0.28
- mH
- VC Diameter
- 38
- mm
- Winding height
- HVC
- 17.3
- mm
- Force factor
- Bl
- 6.0
- N/A
- Motor constant
- Bl/√RE
- 3.46
- N/√W
- Air gap height
- HAG
- 6
- mm
- Effective diameter
- 173
- mm
- Effective area
- SD
- 235
- cm²
- Moving mass
- MMS
- 23.7
- g
- Moving mass (without air load)
- MMD
- 21
- g
- Material
- Coated Fibre Glass
- Stiffness
- KMS
- 0.81
- N/mm
- Compliance
- CMS
- 1230
- µm/N
- Equivalent volume to the compliance
- VAS
- 95
- L
- Mechanical resistance
- RMS
- 1.19
- N·s/m
- Surround material
- SBR Rubber
- Nominal diameter
- 8
- ″
- 220
- mm
- Volume occupied by the driver
- 0.55
- L
- Net weight
- 2.1
- kg
- Frame material
- Die cast Aluminium