Wavecor MR120BD02
4Ω
8Ω
Mid-range
4.75″ / 120 mm
Nominal diameter
72 Hz
Resonance
0.55
Q factor
85 dB
Sensitivity
± 1.5 mm
Linear excursion
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 84.8
- dB
- Frequency response
- 200 - 4000
- Hz
- Resonance frequency (free air)
- fS
- 72.0
- Hz
- Mechanical quality factor
- QMS
- 8.30
- Electrical quality factor
- QES
- 0.59
- Total quality factor
- QTS
- 0.55
- Maximum linear excursion
- xmax
- 1.5
- mm
- Air volume displaced at xmax
- VD
- 7.5
- cm³
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.4
- Ω
- Inductance (1kHz, estimated)
- LE
- 0.25
- mH
- VC Diameter
- 25
- mm
- Winding height
- HVC
- 7
- mm
- Former material
- Black fiber glass
- Force factor
- Bl
- 5.2
- N/A
- Motor constant
- Bl/√RE
- 2.06
- N/√W
- Air gap height
- HAG
- 4
- mm
- Diameter
- 90
- mm
- Weight
- 0.44
- kg
- Effective diameter
- 80
- mm
- Effective area
- SD
- 50
- cm²
- Moving mass
- MMS
- 5.5
- g
- Moving mass (without air load)
- MMD
- 5.2
- g
- Material
- Kevlar/Carbon fiber
- Stiffness
- KMS
- 1.11
- N/mm
- Compliance
- CMS
- 900
- µm/N
- Equivalent volume to the compliance
- VAS
- 3.2
- L
- Mechanical resistance
- RMS
- 0.3
- N·s/m
- Nominal diameter
- 4.75
- ″
- 120
- mm
- Overall diameter
- 120
- mm
- Baffle cutout diameter
- 98
- mm
- Mounting depth
- 64
- mm
- Volume occupied by the driver (estimated)
- 0.44
- L
- Net weight
- 1.1
- kg
- Frame material
- Die cast aluminum
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
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