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RCF LF18G400 - 18" 1000W 8 Ohm
The LF18G400 is a 18-inch woofer with linear frequency response cheracteristics and very high power handling.
The LF18G400 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround.
This combination provides remarkable strength and peak to peak maximum excursion of 50mm.
Special features of this 18" are the unique T-pole, curved against voice coil over-driving and 14mm top plate for best control and power handling.
Applications:
The LF18G400 is ideal for use in applications where incredible power handling, long excursion and perfect control is required.
Ideal for high quality professional bass reflex and bass-horn system.
The robust machanical design and optimised weight of the device make it desiderable for use in fixed installation or portable professional loudspeaker system.
Main Features:
- 4-inch, fiberglass inside/outside copper voice coil
- 2000W continuous program power handling
- 97.5 dB Sensitivity
- 25 Hz – 1 kHz Frequency range
- T-pole, curved on top. 14mm top plate for minimum power compression
- Dual spider design with silicon based dampening control
- Triple-roll surround and corrugated straight cone geometry
This product has been discontinued - please do not try to order this item we will not be able to supply it - the product details are here for reference only. Please contact a member of staff, and we may be able to find an equivalent product for you.
General Specifications
- Nominal Diameter: 460 mm / 18 inch
- Rated Impedance: 8 O
- Program Power: 2000 W AES
- Power handling capacity: 1000 W AES
- Sensitivity: 97.5 dB
- Frequency Range: 25 Hz - 1000 Hz
- Effective Piston Diameter: 395 mm / 15.6 inch
- Max Excursion Before Damage (peak to peak): 50 mm / 2.0 inch
- Minimum Impedance: 6.0 O
- Voice Coil Diameter: 100 mm / 4 inch
- Voice Coil Material: Copper
- Voice Coil Winding Depth: 25 mm / 1.0 inch
- Number of layers: 2
- Kind of layer: Inside / outside
- Top Plate Thickness: 14 mm / 0.55 inch
- Cone Material: No pressed pulp
- Cone Design: Straight
- Surround Material: Polycotton
- Surround Design: Triple roll
Thiele/Small Parameters
- Resonance (fs): 28 Hz
- DC resistance: 5.1 Ohms
- Mechanical factor: 4.6
- Electrical factor: 0.29
- Total factor: 0.27
- BL Factor: 24.2 T · m
- Effective Moving Mass: 190 g
- Equivalent Cas air load: 360 liters
- Effettive piston area: 0.122 m²
- Max. linear excursion (mathematical): 9.0 mm
- Voice - coil inductance @ 1kHz: 2.5 mH
- Half-space efficiency: 2.63%
Mounting information
- Overall Diameter: 465 mm / 18.3 inch
- Bolt Circle Diameter: 442-447 mm / 17.4-17.6 inch
- Bolt Hole Diameter: 6.5 mm / 0.3 inch
- Front Mount Baffle Cut-out: 424 mm / 16.7 inch
- Rear Mount Baffle Cut-out: 424 mm / 16.7 inch
- Depth: 210 mm / 8.3 inch
- Volume occupied by the driver: 7.0 litres / 0.25 ft³
- Net Weight: 13.3 kg / 29.3 lbs
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