SEAS RM 120 L0021-04S
Mid-range
4.5″ / 120 mm
Nominal diameter
72 Hz
Resonance
0.35
Q factor
87 dB
Sensitivity
± 1.7 mm
Linear excursion
400 W
Program Power
.jpg)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 87.2
- dB
- Frequency response
- 300 - 5000
- Hz
- Resonance frequency (free air)
- fS
- 72.0
- Hz
- Mechanical quality factor
- QMS
- 2.95
- Electrical quality factor
- QES
- 0.40
- Total quality factor
- QTS
- 0.35
- Maximum linear excursion
- xmax
- 1.7
- mm
- Air volume displaced at xmax
- VD
- 8.5
- cm³
- Power handling
- P
- 110
- W
- Program power
- Pmax
- 400
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.0
- Ω
- Inductance (1kHz)
- LE
- 0.25
- mH
- VC Diameter
- 26
- mm
- Winding height
- HVC
- 9.4
- mm
- Flux density
- B
- 1.1
- T
- Force factor
- Bl
- 4.0
- N/A
- Motor constant
- Bl/√RE
- 2.31
- N/√W
- Air gap height
- HAG
- 6
- mm
- Weight
- 0.42
- kg
- Effective diameter
- 80
- mm
- Effective area
- SD
- 50
- cm²
- Moving mass
- MMS
- 4.6
- g
- Moving mass (without air load)
- MMD
- 4.3
- g
- Stiffness
- KMS
- 0.91
- N/mm
- Compliance
- CMS
- 1100
- µm/N
- Equivalent volume to the compliance
- VAS
- 4
- L
- Mechanical resistance
- RMS
- 0.73
- N·s/m
- Nominal diameter
- 4.5
- ″
- 120
- mm
- Volume occupied by the driver (estimated)
- 0.52
- L
- Net weight
- 1.3
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
.png)
.png)
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
Speakerbench.jpg.webp)
.jpg.webp)
.png.webp)