Rcf lf18G400 Woofer Details
Key Features
- Remarkable linearity and power handling
- 4″ diameter inside/outside copper voice coil on fibreglass former
- 2,000-watt continuous program power handling
- 9 mm linear excursion, 50 mm peak to peak
- Unique T-pole, curved on top, and 14 mm top plate for minimum power compression
- Triple-roll surround and fibre-loaded corrugated straight cone geometry
- Dual spider design with silicon-based damping control
Rcf lf18G400 resonant frequency | fS | 28 | Hz |
Electrical Q | QES | 0.29 | |
Mechanical Q | QMS | 4.60 | |
Total Q factor | QTS | 0.27 | |
Suspension equivalent air volume | VAS | 360 | litres |
DC resistance | RE | 5.1 | Ω |
Minimum impedance | Zmin | 6.0 | Ω |
Voice coil inductance | LE | 1.2 | mH |
Force factor | B·l | 24.2 | T·m |
Suspension mechanical resistance | RMS | 7.3 | N·s/m |
Suspension mechanical compliance | CMS | 176 | µm/N |
Moving mass | MMD | 160.7 | g |
Moving mass (including airload) | MMS | 190 | g |
Surface of the diaphragm | SD | 1200 | cm² |
Effective diaphragm diameter | Ø | 39.5 | cm |
Maximum linear excursion | Xmax | ± 9 | mm |
Excursion limit | Xlim | ± 25 | mm |
Displacement volume at Xmax | VD | 1080 | cm³ |
Efficiency | η₀ | 2.63 | % |
Efficiency bandwidth product | EBP | 96 |
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Rcf lf18G400 Dimension
Volume occupied | 7 | liters |
Overall diameter | 465 | mm |
Baffle hole diameter | 424 | mm |
Overall depth | 228 | mm |
Flange thickness | 14 | mm |
Net weight | 13.3 | kg |
Diaphragm shape | Straight Cone | |
Surround material | Polycotton | |
Voice coil diameter | 102 | mm |
Voice coil height (HVC) | 25 | mm |
Coil material | Copper | |
Magnet | Ceramic |
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