RCF L18S801 18″ Bass Speaker 700 watt RMS power

The L18S801 is the RCF classical high efficiency 18" woofer.

A perfect blend of voice coil length, moving mass weight and suspensions control makes this transducer the preferred solution for many speakers and rental companies.
Voice coil construction, suspension and cone materials are upgrade in order to withstand up to 700 watt RMS power.   FEATURES

• 4-inch, fiberglass inside/outside copper voice coil
• 1400W continuous program power handling
• 99.5 dB Sensitivity
• 38 Hz – 1 kHz Frequency range
• Dual spider design with silicon based dampening control
• M-roll surround and exponential cone geometry

GENERAL SPECIFICATIONS

• Nominal Diameter:460 / 18mm/inch
• Rated Impedance:8Ω
• Program Power:1400W AES
• Power handling capacity:700W AES
• Sensitivity:5dB
• Frequency Range:38Hz ÷ 1000 Hz
• Effective Piston Diameter:380 / 15mm/inch
• Max Excursion Before Damage (peak to peak):40 / 1.6mm/inch
• Minimum Impedance:3Ω
• Voice Coil Diameter:100 / 4mm/inch
• Voice Coil Material:Copper
• Voice Coil Winding Depth:5 / 0.7mm/inch
• Number of layers:2
• Kind of layer:inside / outside
• Top Plate Thickness:10 / 0.4mm/inch
• Cone Material:No pressed pulp
• Cone Design:Curved
• Surround Material:Polycotton
• Surround Design:M - roll

THIELE/SMALL PARAMETERS

• Resonance frequency:39Hz
• DC resistance:9Ω
• Mechanical factor:3
• Electrical factor:30
• Total factor:29
• BL Factor:5T · m
• Effective Moving Mass:148g
• Equivalent Cas air load:206liters
• Effettive piston area:113m²
• linear excursion (mathematical):6.8mm
• Voice - coil inductance @ 1kHz:7mH
• Half-space efficiency:93%

MOUNTING INFORMATION

• Overall Diameter:470 / 18.5mm/inch
• Bolt Circle Diameter:438 / 17.2mm/inch
• Bolt Hole Diameter:8 / 0.3mm/inch
• Front Mount Baffle Cut-out:416 / 16.4mm/inch
• Rear Mount Baffle Cut-out:416 / 16.4mm/inch
• Depth:209 / 8.3mm/inch
• Volume occupied by the driver:5 / 0.23liters/ft³
• Net Weight:1 / 29.1kg/lbs

Nominal Specifications

    Nominal Diameter 18“, 460 mm
    Overall Diameter 18.11“, 460 mm
    Bolt Circle Diameter 17.32“, 440 mm
    Baffle Cutout Diameter 16.61“, 422 mm
    Depth 7.95“, 202 mm
    Flange and Gasket Thickness 0.55“, 13.9 mm


Electrical Specifications

    Minimum Impedance 6.6 Ohm
    Nominal Impedance 8 Ohm
    Nominal Power Handling*** 1,000 W
    Maximum Power Handling**** 2,000 W
    Sensitivity (1W/1m) 99 dB
    Frequency Range 38 - 2500 Hz
    Voice Coil Diameter 4“, 100 mm
    Winding Material Aluminium
    Former Material Glass Fiber
    Winding Depth 0.9“, 23 mm
    Magnetic Gap Depth 0.47“, 12 mm
    Flux Density 1.3 T


THIELE & SMALL Parameters

    Resonant Frequency (fs) 38 Hz
    DC Resistance (Re) 5.5 Ohm
    BL Product (BL) 24.5 N/A
    Diaphragm Mass inc. Airload (Mms) 163 grams
    Mechanical Compliance of Suspension (Cms) 0.11 mm/N
    Rms 4.42 Kg/s
    Electromagnetic Q (Qes) 0.35
    Mechanical Q (Qms) 8.75
    Total Q (Qts) 0.34
    Compliance Equivalent Volume (Vas) 7.37 ft³, 208.8 dm³
    Surface Area of Cone (Sd) 180.7“², 1,166 cm²
    Maximum Linear Excursion (Xmax)* 9.5 mm
    Xdamage** 17.5 mm
    Coil Inductance (Le) 1.36 mH
    Diaphragm mass (Mmd) 141 g
    Eta Zero 3.14 %

Notes

    *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
    **Maximum excursion before permanent damage
    ***2 Hours Test According to AES 2-1984 Rev. 2003
    ****Maximum power is defined as 3dB greater than nominal power

• 95 dB Sensitivity 1 W / 1 m
• 1.200 W Power Handling
• 4" Copper Sandwich Voice Coil for low Power Compression
• Double treated Cone for Water Protection
• Triple Aluminum demodulating Rings for ultra low Distortion
• Optimal for high output Subwoofers

Nominal Diameter     460 mm (18 in)
Overall Diameter     460 mm (18.11 in)
Bolt Circle Diameter     440 mm (17.32 in)
Baffle Cutout Diameter     424 mm (16.7 in)
Depth     202 mm (7.95 in)
Flange and Gasket Thickness     13.9 mm (0.55 in)
Net Weight     4.7 Kg (10.4 lb)
Shipping Box
(Single Carton Box)     536x536x293 mm (21.1x21.1x11.5 in)
Shipping Weight     6 Kg (13.2 lb)

Nominal Impedance     8 Ohm
Minimum Impedance     6 Ohm
Nominal Power Handling ***     600 W
Maximum Power Handling ****     1200 W
Sensitivity (1W/1m)     99 dB
Frequency Range     30÷3150 Hz
Voice Coil Diameter     77 mm (3 in)
Winding Material     Cu
Former Material     Glass Fiber
Winding Depth     22 mm (0.87 in)
Magnetic Gap Depth     10.5 mm (0.41 in)
Flux Density     1.2 T

Fs     30 Hz
Re     5.1 Ohm
Qes     0.34
Qms     8.68
Qts     0.33
Vas     404.2 dm^3 (14.27 ft^3)
Sd     1166 cm^2 (180.7 in^2)
Xmax *     9.25 mm
Xdamage **     17.5 mm
Mms     134.3 g
Bl     19.5 N/A
Le     1.35 mH
Mmd     112.6 g
Cms     0.21 mm/N
Rms     2.91 Kg/s
Eta Zero     3.1 %
EBP     88 Hz
      

                      Specifications

Nominal Diameter                       545 mm (21“)
Nominal Impedance                        4 Ω
Rated Power AES                           1000 W
Continuous Program Power                  2000 W
Sensitivity @ 1W/1m                       97.0 dB
Voice Coil Diameter                     100 mm (4“)
Voice Coil Winding Depth                  25 mm
Magnetic Gap Depth                        17 mm
Flux Density                              0.94 T
Magnet Weight                              536 g
Net Weight                                10.5 kg

Manual/Εγχειρίδιο