Der LF21N551 Lautsprecher ist ein 53 cm Tieftöner mit einer Papier-Membran. Der Lautsprecher-Korb wurde mittels Druckgussverfahren hergestellt. Das Magnet-System, des Klanggebers besteht aus Neodym-Magneten die den Lautsprecher antreiben.
Features:
- 5.3 - inch Inside/Outside copper voice coil
- 4000 Watt continuous program power handling
- 97 dB Sensitivity
- 30 Hz - 1 kHz Frequency range
- Dual-forced air ventilation for minimum power compression
- Dual spider designed with silicon based damping control
- BL of 39 Txm to provide a faster and accurate low frequency
Specifications:
- Nominal Diameter: 530 / 21 mm/inch
- Rated Impedance: 8 Ω
- Program Power: 4000 W AES
- Power handling capacity: 2000 W AES
- Sensitivity: 97 dB
- Frequency Range: 30 Hz ÷ 1000 Hz
- Effective Piston Diameter: 470 / 18.5 mm/inch
- Max Excursion Before Damage (peak to peak): 72 / 2.83 mm/inch
- Minimum Impedance: 7.1 Ω
- Voice Coil Diameter: 135 / 5.3 mm/inch
- Voice Coil Material: Copper
- Voice Coil Winding Depth: 39 / 1.54 mm/inch
- Number of layers: 2
- Kind of layer: inside / outside
- Top Plate Thickness: 18 / 0.71 mm/inch
- Cone Material: No pressed pulp carbon fiber reinforced
- Cone Design: Curved
- Surround Material: Polycotton
- Surround Design: Triple roll
- Resonance frequency: 35 Hz
- DC resistance: 5.2Ω
- Mechanical factor: 6.2
- Electrical factor: 0.35
- Total factor: 0.33
- BL Factor: 39 T · m
- Effective Moving Mass: 434 g
- Equivalent Cas air load: 200 liters
- Effettive piston area: 0.173 m²
- Max. linear excursion (mathematical): 15 mm
- Voice - coil inductance @ 1kHz: 3.2 mH
- Half-space efficiency: 2.40%
- Overall Diameter: 547 / 21.5 mm/inch
- Bolt Circle Diameter: 527 / 20.7 mm/inch
- Bolt Hole Diameter: 6.5 / 0.25 mm/inch
- Front Mount Baffle Cut-out: 512 / 20.1 mm/inch
- Rear Mount Baffle Cut-out: 512 / 20.1 mm/inch
- Depth: 245 / 9.65 mm/inch
- Volume occupied by the driver: 7.2 / 0.25 liters/ft³
- Net Weight: 13.7 / 30.2 kg/lbs
