Woofer 18", 1000W AES, 2000W Program |  |
|
|
|
Incredibly fast time response characteristic, very high power handling, low power compression.
The LF18N402 uses a fibre loaded cone assembly along with a small triple roll, progressive geometry surround. This combination provides remarkable strength and surround control. A fully optimised T-pole design generate the minimum amount of flux modulation, the unique Dual-forced air venting system guarantee a very efficient voice coil ventilation for minimum power compression and higher power handling.
Applications
The LF18N402 is ideal for use in applications where incredible BL, very high power handling, light weight is required. Specially designed for touring, perfect for high quality professional bandpass and horn-loaded systems. The transducer’s low frequency extension and control also makes it ideal for use within critical listening applications such as studio monitoring subwoofer systems. |
|
| - |
4-inch Inside/outside copper voice coil |
| - |
2000 Watt continuous program power handling |
| - |
98.5 dB Sensitivity |
| - |
30 Hz - 1 kHz Frequency range |
| - |
BL/Re maximized for loaded applications |
| - |
Dual-forced air ventilation and 15 mm top plate for
minimum power compression |
| - |
Dual spider design with silicon based dampening
control |
| - |
Triple-roll surround and corrugated straight cone
geometry |
|
|
|
| Woofer 18", 1000W AES, 2000W Program |
|
Nominal Diameter
|
460/18
|
mm/inch
|
|
Rated Impedance
|
8
|
Ohm
|
|
Program Power
|
2000
|
Watts
|
|
Power handling capacity
|
1000
|
Watts
|
|
Sensitivity 1W, 1m
|
98.5
|
dB
|
|
Frequency Range
|
30-1000
|
Hz
|
|
Effective Piston Diameter
|
395/15.6
|
mm/inch
|
|
Maximum Excursion Before Damage
|
54/2.1
|
mm/inch
|
|
Minimum Impedance
|
6.8
|
Ohm
|
|
Voice Coil Diameter
|
100/4
|
mm/inch
|
|
Voice Coil Material
|
Copper
|
|
|
Voice Coil Winding Depth
|
20.5/0.8
|
mm/inch
|
|
Number of layers
|
2
|
|
|
Kind of layer
|
Inside/Outside
|
|
|
Thickness Top Plate Depth
|
15/0.6
|
mm/inch
|
|
Cone Material
|
No pressed pulp
|
|
|
Cone Design
|
Straight
|
|
|
Surround Material
|
Polycotton
|
|
|
Surround Design
|
Triple roll
|
|
| THIELE - SMALL PARAMETERS |
|
Resonance frequency
|
Fs
|
36
|
Hz
|
|
DC resistance
|
Re
|
5.6
|
Ohm
|
|
Mechanical factor
|
Qms
|
7.1
|
|
|
Electrical factor
|
Qes
|
0.25
|
|
|
Total factor
|
Qts
|
0.24
|
|
|
BL factor
|
BL
|
29
|
T - m
|
|
Effective Moving Mass
|
Mms
|
165
|
gr
|
|
Equivalent Cas air load
|
Vas
|
247
|
liters
|
|
Effective piston area
|
Sd
|
0.122
|
m2
|
|
Max. linear excursion
|
Xmax
|
7.3
|
mm
|
|
Voice - coil inductance @ 1KHz
|
Le1k
|
2.6
|
mH
|
|
Half-space efficiency
|
Eff
|
4.4
|
%
|
|
Overall Diameter
|
465/18.3
|
mm/inch
|
|
Bolt Circle Diameter
|
442-447
|
mm
|
|
Bolt Hole Diameter
|
6.5/0.3
|
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
|
liters/ft3
|
|
Net Weight
|
9.1/20.2
|
Kg/lbs
|
|
Shipping Weight
|
9.8/21.8
|
Kg/lbs
|
|
|
| Woofer 18", 1000W AES, 2000W Program |
|
|
