Image Dynamics ID8D4 V4
2x2Ω
2x4Ω
Subwoofer
| Nominal diameter | 8″ / 203 mm |
| Resonance | 31 Hz |
| Q factor | 0.67 |
| Sensitivity | 86.8 dB |
| Linear excursion | ± 12.5 mm |
| Program power | 300 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 86.8dB
- Frequency response 30 - 500Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 31Hz
- Mechanical quality factor QMS 4.37
- Electrical quality factor QES 0.80
- Total quality factor QTS 0.67
Large signal parameters
- Maximum linear excursion (one way) xmax 12.5mm
- Air volume displaced at xmax VD 301cm³
- Power handling P 150W
- Program power Pmax 300W
Voice Coil
- Nominal impedance Z 2 x 4Ω
- DC resistance (in series) RE 7.8Ω
- Inductance (1kHz, in series) LE 0.7mH
- VC Diameter 38.1mm
- Winding height HVC 33mm
- Winding material Copper
- Former material BASV
Magnet
- Force factor (in series) Bl 20.1N/A
- Motor constant Bl/√RE 5.09N/√W
- Air gap height HAG 8mm
- Diameter 120mm
- Weight 2.55kg
Diaphragm
- Effective diameter 175mm
- Effective area SD 241cm²
- Moving mass (including air load) MMS 73g
- Moving mass MMD 70.3g
- Material Poly/Mica
Suspensions
- Stiffness KMS 5.95N/mm
- Compliance CMS 168µm/N
- Equivalent volume to the compliance VAS 13.5L
- Mechanical resistance RMS 3.25N·s/m
- Surround material Santoprene
- Spider material Hybrid Progressive
Dimensions
- Nominal diameter 8″
- 203mm
- Overall diameter 213mm
- Baffle cutout diameter 181mm
- Overall depth 113mm
- Flange thickness 0mm
- Mounting depth 113mm
- Volume occupied by the driver 1.49L
- Net weight 3.04kg
Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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