Scan-Speak Discovery 12W/8524G00
Mid Bass
4.5″ / 120 mm
Nominal diameter
52 Hz
Resonance
0.32
Q factor
87 dB
Sensitivity
± 3 mm
Linear excursion
70 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 86.9
- dB
- Frequency response
- 52 - 5000
- Hz
- Resonance frequency (free air)
- fS
- 52.0
- Hz
- Mechanical quality factor
- QMS
- 3.42
- Electrical quality factor
- QES
- 0.35
- Total quality factor
- QTS
- 0.32
- Maximum linear excursion
- xmax
- 3.0
- mm
- Maximum excursion before damage
- xlim
- 9.0
- mm
- Air volume displaced at xmax
- VD
- 18
- cm³
- Power handling
- P
- 40
- W
- Program power
- Pmax
- 70
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.7
- Ω
- Inductance (1kHz, estimated)
- LE
- 0.22
- mH
- VC Diameter
- 25
- mm
- Winding height
- HVC
- 10
- mm
- Force factor
- Bl
- 5.4
- N/A
- Motor constant
- Bl/√RE
- 2.26
- N/√W
- Air gap height
- HAG
- 4
- mm
- Effective diameter
- 86
- mm
- Effective area
- SD
- 59
- cm²
- Moving mass
- MMS
- 5.6
- g
- Moving mass (without air load)
- MMD
- 5.2
- g
- Material
- Coated Fibre Glass
- Stiffness
- KMS
- 0.6
- N/mm
- Compliance
- CMS
- 1670
- µm/N
- Equivalent volume to the compliance
- VAS
- 8.2
- L
- Mechanical resistance
- RMS
- 0.54
- N·s/m
- Surround material
- SBR Rubber
- Nominal diameter
- 4.5
- ″
- 120
- mm
- Volume occupied by the driver
- 0.12
- L
- Net weight
- 1.0
- kg
- Frame material
- Die cast Aluminium