RCF LF18N451
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Very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression
The LF18N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression.
Ultra fast time response. The LF18N451 uses a fibre loaded cone assembly along a large triple roll surround, this combination provides remarkable strength and control.
Double silicon spider sysetm ensures excellent control during large excursions.
A fully optimazed T-pole design generate the minimum amount of flux modulation.
The Dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression.
18" Leistung: 1500W RMS, 3000W Programmleistung Schalldruck SPL 1W/1m: 97.5dB Freq. Range 19-400 Hz
Features
* 4,5 - inch Inside/Outside copper voice coil
* 3000 Watt continuous program power handling
* 97.5 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 30.2 Txm to provide a faster and accurate low frequency
General Specifications
* Nominal Diameter: 460/18 mm/inch
* Rated Impedance: 8 Ω
* Program Power: 3000 W AES
* Power handling capacity: 1500 W AES
* Sensitivity: 97.5 dB
* Frequency Range: 30 Hz ÷ 1000 Hz
* Effective Piston Diameter: 395 / 15.6 mm/inch
* Max Excursion Before Damage (peak to peak): 60/2.36 mm/inch
* Minimum Impedance: 6.3 Ω
* Voice Coil Diameter: 115 / 4.5 mm/inch
* Voice Coil Material: Copper
* Voice Coil Winding Depth: 26 / 1.02 mm/inch
* Number of layers: 2
* Kind of layer: inside / outside
* Top Plate Thickness: 15 / 0.6 mm/inch
* Cone Material: No presed pulp
* Cone Design: Curved
* Surround Material: Polycotton
* Surround Design: Triple roll
Thiele/Small Parameters
* DC resistance: 5.0Ω
* Mechanical factor: 6.0
* Electrical factor: 0.25
* Total factor: 0.24
* BL Factor: 30.2 T · m
* Effective Moving Mass: 235 g
* Equivalent Cas air load: 245 liters
* Effettive piston area: 0.122 m²
* Max. linear excursion (mathematical): 8.8 mm
* Voice - coil inductance @ 1kHz: 2.6 mH
* Half-space efficiency: 2.54%
Mounting information
* Overall Diameter: 465 / 18.3 mm/inch
* Bolt Circle Diameter: 442-447 / 17.4-17.6 mm/inch
* Bolt Hole Diameter: 6.5 / 0.25 mm/inch
* Front Mount Baffle Cut-out: 424/16.7 mm/inch
* Rear Mount Baffle Cut-out: 424 / 16.7 mm/inch
* Depth: 205 / 8.1 mm/inch
* Volume occupied by the driver: 5.5/0.19 liters/ft³
* Net Weight: 10.6 / 23.3 kg/lbs
Shipping information
* Shipping weight: 11.8 / 26 kg/lbs
| Marke | RCF |
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