EMINENCE EDM4018LFA Definimax 4018LF – 18″ Speaker 800 W 8 Ohms – Alu Basket

DEFINIMAX™ 4018LF Professional Series

Recommended for professional audio and bass as a low distortion sub-woofer in single or multi-driver designs.

• Nominal Basket Diameter 18“, 457.2 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 800 W / Music Program 1600 W
• Resonance 32Hz Usable Frequency Range 36 Hz -200 Hz
  
• Sensitivity 95
• Magnet Weight 109
• Gap Height 0.375“,
• Voice Coil Diameter 4“, 101.6 mm

• Resonant Frequency (fs) 32 Hz
• DC Resistance (Re) 6.19
• Coil Inductance (Le) 4.78 mH
• Mechanical Q (Qms) 10.38
• Electromagnetic Q (Qes) 0.36
• Total Q (Qts) 0.35
• Compliance Equivalent Volume (Vas) 237.9 liters / 8.4 cu. ft.
• Peak Diaphragm Displacement Volume 939 cc
• Mechanical Compliance of Suspension (Cms) 0.12 mm/N
• BL Product (BL) 27.0
• Diaphragm Mass inc. Airload (Mms) 211 grams
• Efficiency Bandwidth Product (EBP) 89
• Maximum Linear Excursion (Xmax) 7.9 mm
• Surface Area of Cone (Sd) 1188.0 cm²
• Maximum Mechanical Limit (Xlim) 15.9 mm

• Recommended Enclosure Volume
  Sealed N/A
  Vented 125-210
• Overall Diameter 18“,
• Baffle Hole Diameter 16.57“,
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.28“, 7 mm
• Mounting Holes B.C.D. 17.25“, 438.2 mm
• Depth 8.13“, 206.4 mm

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Undercut with copper shorting ring and Core Periphery Ventilation
• Die-cast aluminum basket
• Acrylic Wetlook Paper Cone
• Cloth cone edge
• Acrylic wetlook paper dust cap

• Shape Cylindrical
• Product type Cone driver
• Brand Sica
• Frequency coverage type Sub
• Dimensional category 18 inch
• Front chape Cylindrical
• Magnet type Ferrite
• Basket masterial Aluminium
• Nominal impedance 4 ohm
• Nominal power handling 700 W
• Max power handling 1400 W
• Sensitivity 97.9 dB
• Voice coil diameter 4 inch
• Flux density 1.12 T
• External diametre 462 mm
• Mounting diametre 415 mm
• Depth 203.5 mm
• Depth after front 188.5 mm
• Front thickness 15 mm
• Diamètre aimant (mm) 220 mm
• Weight 13.9 kg
• Fs 36.9 Hz
• Re 3.25 ohm
• Qes 0.29
• Qms 9.03
• Qts 0.28
• Vas 181.9 L
• Sd 1164.2 cm²
• Cms 95 µm/N
• Efficiency 3.02 %
• Xmax 6 mm
• Mms 196.2 gr
• BL 22.55 T.m
• Le 1.03 mH
• EBP 127
• Dome material Paper
• Cone material Paper
• Surround material Cloth
• Shipping weight 13.9 kg

• 1400 W continuous program power capacity
• 100 mm (4 in) copper voice coil
• 40 - 2000 Hz response
• 97 dB sensitivity
• Double silicone spider with optimized compliance

• Specifications
  • Nominal diameter460 mm (18.0 in)
  • Nominal impedance8 Ω
  • Minimum impedance6.5 Ω
  • Nominal power handling *700 W
  • Continuous power handling *1400 W
  • Sensitivity (1W/1m) *97.0 dB
  • Frequency range40 - 2000 Hz
  • Voice coil diameter100 mm (4.0 in)
  • Winding materialCopper
  • Former materialGlass Fibre
  • Winding depth21 mm (0.83 in)
  • Magnetic gap depth8 mm (0.31 in)
  • Flux density1.15 T
• Design
  • Surround shapeDouble Roll
  • Cone shapeExponential
  • Magnet materialFerrite
  • SpiderDouble Silicone
  • Pole designStraight Pole
  • Woofer cone treatmentTWP Waterproof Both Sides
  • Recommended enclosure160.0 dm3 (5.65 ft3)
  • Recommended tuning39 Hz
• Parameters *
  • Fs30 Hz
  • Re5.3 Ω
  • Qes0.25
  • Qms8.8
  • Qts0.24
  • Vas297.0 dm3 (10.5 ft3)
  • Sd1134.0 cm2 (175.8 in2)
  • η₀3.1 %
  • Xmax8.0 mm
  • Xvar8.0 mm
  • Mms170 g
  • Bl26.0 Txm
  • Le2.1 mH
  • EBP120 Hz
• Mounting And Shipping Info
  • Overall diameter480 mm (18.0 in)
  • Bolt circle diameter440 mm (17.3 in)
  • Baffle cutout diameter422.0 mm (16.6 in)
  • Depth202 mm (7.95 in)
  • Flange and gasket thickness16 mm (0.62 in)
  • Air volume occupied by driver9.5 dm3 (0.33 ft3)
  • Net weight12.1 kg (26.6 lb)
  • Shipping units1
  • Shipping weight14.0 kg (30.8 lb)
  • Shipping box520x520x240 mm (20.5x20.5x9.4 in)

• 4'' sandwich voice coil fiberglass former
• Double progressive wave Konex spider
• Cloth suround with DAR technology
• Autoclave waterproof cone treatment
• Balanced neodymium magnet circuit
• Cooling radiator and ventilated voice
• coil to reduce power compression
• 98.1 dB sensitivity

Manual/Εγχειρίδιο 

• 96 dB Sensitivity 1 W / 1 m
• 1.100 W Power Handling
• 4" Copper Sandwich Voice Coil for low Power Compression
• Neodymium Magnet System
• Double treated Cone for Water Protection
• Triple Aluminum demodulating Rings for ultra low Distortion
• Optimal for high Output Suwoofers

• 95 dB Sensitivity 1 W / 1 m
• 1.200 W Power Handling
• 4" Copper Sandwich Voice Coil for low Power Compression
• Neodymium Magnet System
• Double treated Cone for Water Protection
• Triple Aluminum demodulating Rings for ultra low Distortion
• Optimal for high Output Subwoofers
• Leight Weight Carbon Fiber Diaphragm