Price List Rp.4.640.000
RCF Low Frequency Tranduscer LF18X400
Incredibly linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 18-inch transducer within its application range.
The LF18X400 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround. A fully optimised T-pole design generate the minimum amount of flux modulation. The T-pole also features RCF Precision’s spaced gap demodulation technology, progressively braking the voice coil, providing a much smoother transition for the moving mass as it reaches its maximum excursion limits. Forced air venting system.
FEATURES
- 4-inch, fiberglass inside/outside copper voice coil
- 2000W continuous program power handling
- 97.5 dB Sensitivity
- 25 Hz – 1 kHz Frequency range
- Progressive, spaced, aluminum demodulation rings
- Forced air ventilation and 14 mm top plate for minimum power compression
- Dual spider design with silicon based dampening control
- Triple roll surround and corrugated straight cone geometry
GENERAL SPECIFICATIONS
- Nominal Diameter:460 / 18 mm/inch
- Rated Impedance:8 Ω
- 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 / 15.6 mm/inch
- Max Excursion Before Damage (peak to peak):50 / 2.0 mm/inch
- Minimum Impedance:6.0 Ω
- Voice Coil Diameter:100 / 4 mm/inch
- Voice Coil Material:Copper
- Voice Coil Winding Depth:25 / 1.0 mm/inch
- Number of layers:2
- Kind of layer:inside / outside
- Top Plate Thickness:14/0.55 mm/inch
- Cone Material:No pressed pulp
- Cone Design:Straight
- Surround Material:Polycotton
- Surround Design:Triple roll
THIELE/SMALL PARAMETERS
- Resonance frequency:28 Hz
- DC resistance:5.1Ω
- Mechanical factor:6.5
- Electrical factor:0.29
- Total factor:0.27
- BL Factor:25 T · m
- Effective Moving Mass:192 g
- Equivalent Cas air load:340 liters
- Effettive piston area:0.122 m²
- Max. linear excursion (mathematical):9.0 mm
- Voice - coil inductance @ 1kHz:2.3 mH
- Half-space efficiency:2.64%
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:210/8.3 mm/inch
- Volume occupied by the driver:7.0/0.25 liters/ft³
- Net Weight:13.3 / 29.3 kg/lbs
SHIPPING INFORMATION
- Shipping weight:14.3 / 31.5 kg/lbs
