Nominal diameter | 4.75″ / 121 mm |
Resonance | 70 Hz |
Q factor | 0.37 |
Sensitivity | 85.7 dB |
Program Power | 100 W |
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
- Sensitivity (1W, 1m, infinite baffle) SPL1W 85.7dB
- Frequency response 70 - 4000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 70Hz
- Mechanical quality factor QMS 6.00
- Electrical quality factor QES 0.40
- Total quality factor QTS 0.37
Large signal parameters
- Power handling P 50W
- Program power Pmax 100W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.2Ω
- Inductance (1kHz) LE 0.086mH
- VC Diameter 26mm
- Winding height HVC 12mm
Magnet
- Force factor Bl 4.5N/A
- Motor constant Bl/√RE 2.52N/√W
- Air gap height HAG 4mm
- Weight 0.43kg
Diaphragm
- Effective diameter 83mm
- Effective area SD 54cm²
- Moving mass MMS 6.55g
- Moving mass (without air load) MMD 6.2g
Suspensions
- Stiffness KMS 0.971N/mm
- Compliance CMS 1030µm/N
- Equivalent volume to the compliance VAS 4.25L
- Mechanical resistance RMS 0.42N·s/m
Dimensions
- Nominal diameter 4.75″
- 121mm
- Volume occupied by the driver (estimated) 0.41L
- Net weight 1.04kg
Similar speaker drivers to Wavecor WF120BD03/07
MONACOR SP-100/88 Ω |
---|
4″ Mid-range |
fS | 61 Hz |
SD | 52 cm² |
61 - 7000 Hz |
QTS | 0.37 |
xmax | 2.5 mm |
SPL1W | 85.5 dB |
Bl/√RE | 2.18 |
Pmax | 60 W |
Morel EW 4288 Ω |
---|
4″ Woofer |
fS | 62 Hz |
SD | 57 cm² |
|
QTS | 0.35 |
xmax | 4.5 mm |
SPL1W | 86.3 dB |
Bl/√RE | 2.43 |
Pmax | 300 W |