Spesifikasi RCF LF18N451 3000 Watt 18 Inch Speaker Woofer

RCF LF18N451 3000 Watt 18 Inch Speaker Woofer

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

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
•  

Specifications
Nominal Diameter
18 inch / 457 mm
Rated Impedance
8 ohm
Program Power (watt)
3000 W
Power handling capacity
1500 W
Sensitivity
97.5 dB
Frequency range
30 - 1000 Hz
Effective piston diameter
395 mm / 15.55 inch
Max. Excursion Before Damage
60 mm / 2.36 inch
Minimum Impedance (ohm)
6.3 ohm
Voice Coil Diameter
4.5 inch / 114 mm
Voice Coil Winding Material
Copper
Voice Coil Length
26 mm / 1.02 inch
Number of layers
2
Kind of layers
inside/outside
Top Plate Thickness
15 mm / 0.59 inch
Cone Design
Curved
Surround Material
Polycotton
Surround Design
Triple roll
Magnets
Neodymium
Dual-force air ventilation
Yes
Spider
03
Thiele - small parameters
Resonance frequency (Fs)
31 Hz
DC resistance (Re) (ohm)
5.00 ohm
Mechanical factor
6.00 Qms
Electrical factor
0.25 Qes
Total factor
0.24 Qts
Bl factor (Bl) (T x m)
30.20 T x m
Effective moving mass (Mms)
235.0 g
Equivalent Cas air loaded (Vas)
245.0 liters
Effective piston area (Sd)
0.120 m2
Max. linear excursion (Xmax)
9 mm
Voice coil inductance @ 1kHz (Le1k)
2.60 mH
Half-space efficency (Eff)
2.54%
Mounting information
Overall diameter
465 mm / 18.31 inches
Bolt circle diameter
442-447 mm / 17.4-17.6 inch
Bolt hole diameter
7 mm / 0.28 inch
Front mount baffle cut-out
424 mm / 16.69 inch
Rear mount baffle cut-out
425 mm / 16.73 inch
Volume occupied by the driver
5.5 liters / 0.22 ft3
Standard compliance
Safety agency
CE compliant
Size / Weight
Height
223 mm / 8.78 inches
Diameter
465 mm / 18.31 inches
Weight
10.5 kg / 23.15 lbs
Shipping information
Package Height
240 mm / 9.45 inches
Package Width
510 mm / 20.08 inches
Package Depth
480 mm / 18.9 inches
Package Weight
12.5 kg / 27.56 lbs