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

Nominal Specifications

    Nominal Diameter 18“, 460 mm
    Overall Diameter 18.11“, 460 mm
    Bolt Circle Diameter 17.32“, 440 mm
    Baffle Cutout Diameter 16.6“, 422 mm
    Depth 9.09“, 231 mm
    Flange and Gasket Thickness 0.55“, 14 mm


Electrical Specifications

    Minimum Impedance 7.2 Ohm
    Nominal Impedance 8 Ohm
    Nominal Power Handling*** 1,600 W
    Maximum Power Handling**** 3,200 W
    Sensitivity (1W/1m) 98 dB
    Frequency Range 30 - 1500 Hz
    Voice Coil Diameter 4“, 100 mm
    Winding Material Copper
    Former Material Glass Fiber
    Winding Depth 1.23“, 31.3 mm
    Magnetic Gap Depth 0.61“, 15.5 mm
    Flux Density 1.05 T


THIELE & SMALL Parameters

    Resonant Frequency (fs) 32 Hz
    DC Resistance (Re) 5.4 Ohm
    BL Product (BL) 26.7 N/A
    Diaphragm Mass inc. Airload (Mms) 240 grams
    Mechanical Compliance of Suspension (Cms) 0.1 mm/N
    Rms 5.27 Kg/s
    Electromagnetic Q (Qes) 0.37
    Mechanical Q (Qms) 9.3
    Total Q (Qts) 0.36
    Compliance Equivalent Volume (Vas) 6.9 ft³, 195.5 dm³
    Surface Area of Cone (Sd) 182“², 1,174 cm²
    Maximum Linear Excursion (Xmax)* 13 mm
    Xdamage** 28 mm
    Coil Inductance (Le) 1.45 mH
    Diaphragm mass (Mmd) 217 g
    Eta Zero 1.76 %

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

Manual/Εγχειρίδιο

• 1000Wrms continuous power handling (AES Standard)
• Flexirol™ technology for greater excursion control
• Double suspension for exceptional linearity at the highest excursions
• Saturated gap technology for lower harmonic distortion
• Extremely low frequency response, down to 30Hz
• Smart chassis design minimises acoustic distortion