B&C's 18TBW100-4 18" professional woofer features 3,000 watts of continuous program power capacity, thanks to its 4" split winding copper voice coil. A frequency response of 30 to 1,000 Hz and 57 mm of peak-to-peak excursion (before damage) combine to make this one of the top woofers in its class. The 18TBW100-4's double silicone spider with optimized compliance keeps the driver controlled, while the ventilated voice coil gap reduces power compression. Low distortion is achieved by using an aluminum demodulating ring in the driver's magnetic circuit. Great performance is realized in vented boxes as small as 7 cu. ft.
Power Handling (RMS)1,500 Watts
Power Handling (max)3000 Watts
Frequency Response33 to 1,000 Hz
Sensitivity96 dB 1W/1m
Voice Coil Diameter4"
Resonant Frequency (Fs)33 Hz
DC Resistance (Re)3.2 ohms
Voice Coil Inductance (Le)1.64 mH
Mechanical Q (Qms)6.23
Electromagnetic Q (Qes)0.34
Total Q (Qts)0.32
Compliance Equivalent Volume (Vas)6.41 ft.³
Mechanical Compliance of Suspension (Cms)0.088 mm/N
BL Product (BL)22.8 Tm
Diaphragm Mass Inc. Airload (Mms)268.2g
Maximum Linear Excursion (Xmax)12 mm
Surface Area of Cone (Sd)1210 cm²
Materials of Construction
Cone MaterialCoated Paper
Voice Coil Wire MaterialCopper
Voice Coil FormerFiberglass
Basket / Frame MaterialCast Aluminum
Overall Outside Diameter18"
Baffle Cutout Diameter16.6"
Bolt Circle Diameter17.4"
# Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)