BMS BMS18S450L 18 S 450 L – 18″ Subwoofer 1200 W 8 Ohm

• 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

• General

  • Product type : Cone driver
  • Brand : B&C Speakers
  • Manufacturer reference : 18PS76

• Informations

  • Nominal impedance : 8 ohm
  • Dimensional category : 18 inch
  • Frequency coverage type : Sub, Low
  • Manufacturer sensitivity : 99 dB
  • Calculated sensitivity : 98.11 dB
  • Nominal power handling : 600 W
  • Bandwidth : 40÷2000 Hz

• Fundamental parameters

  • Sd : 1210 cm²
  • Mms : 149 gr
  • Le : 1.9 mH
  • Re : 5 ohm
  • BL : 25.8 T.m

• Small signal parameters

  • Fs : 39 Hz
  • Qes : 0.29
  • Qms : 6.1
  • Qts : 0.27
  • Vas : 207 L

• Datas

  • Xmax : ±7 mm
  • EBP : 134 Hz
  • Zmin : 6.5 ohm
  • Fs / Qts : 144 Hz
  • Vas * Qts² : 15.1 L
  • Efficiency : 4 %
  • Calculated efficiency : 4.07 %
  • Weight : ~10.7 kg

• Dimensions

  • Voice coil diameter : 3 inch
  • Winding depth : 24 mm
  • Gap height : 11 mm
  • Outside diameter : 460 mm
  • Baffle cutout diameter : 422 mm
  • Front thickness : 16 mm
  • Depth after front : 186 mm

• Shape & Materials

  • Front chape : Cylindrical
  • Magnet type : Ferrite
  • Basket masterial : Aluminium
  • Winding material : Copper
  • Voice coil former : Glass fiber

• 1400 W continuous program power capacity 100 mm (4 in) copper voice coil 30 - 1000 Hz response 95.5 dB sensitivity Double silicone spider with optimized compliance

• 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

DELTA PRO Serie 400W

Recommended for professional audio in both sealed and vented enclosures. Ideal for full-range, mid/hi, and
monitor wedges.

• Nominal Basket Diameter 18“, 457 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 500 W / Music Program 1000 W
• Resonance 28 Hz
• Usable Frequency Range 37 Hz - 250 Hz
• Sensitivity 96
• Magnet Weight 67 oz.
• Gap Height 0.38“, 9.53 mm
• Voice Coil Diameter 2.5“, 63.5 mm 

• Resonant Frequency (fs) 28 Hz
• DC Resistance (Re) 5.3
• Coil Inductance (Le) 3.43 mH
  
• Mechanical Q (Qms) 10.38
• Electromagnetic Q (Qes) 0.33
• Total Q (Qts) 0.32
• Compliance Equivalent Volume (Vas) 493.19 liters / 17.41 cu. ft.
• Peak Diaphragm Displacement Volume (Vd) 796.00 cc
• Mechanical Compliance of Suspension (Cms) 0.25 mm/N
• BL Product (BL) 18.9 T-M
• Diaphragm Mass inc. Airload (Mms) 128.1 grams
• Efficiency Bandwidth Product (EBP) 84
• Maximum Linear Excursion (Xmax) 6.7 mm
• Surface Area of Cone (Sd) 1188.0 cm²
• Maximum Mechanical Limit (Xlim) 15.0 mm 

• Recommended Enclosure Volume
  Sealed N/A
  Vented 85-297 liters/3.0-10.5 cu. ft.
• Overall Diameter 18.00“, 457.20 mm
• Baffle Hole Diameter 16.57“, 420.88 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.28“, 7.11 mm
• Mounting Holes B.C.D. 17.25“, 438.15 mm
• Depth 8.13“, 206.50 mm

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Vented and extended core
• Die-cast aluminum basket
• Paper Cone
• Cloth cone edge
• Solid composition paper dust cap