Dual 18-inch Cinema Subwoofer

The SB-2180 features two 18” (457 mm) woofers with 4” (102 mm) voice coils for extended bandwidth low frequency reproduction. With an enclosure depth of less than 17 inches (452 mm), the SB-2180 is one of the narrowest dual-driver subwoofers available, which dramatically reduces space requirements behind the screen. A unique folded port design allows the enclosure to be extremely narrow, while maintaining full port length and volume.


  • Optimized for cinema applications
  • Requires less than 17 inches (432 mm) behind screen
  • Two 18-inch (456 mm) woofers with 4-inch (100 mm) voice coils
  • Screw-type barrier-strip connectors
Specifications SB-2180
Frequency Range1 (-10dB) 25 Hz to 150 Hz
Rated Noise Power (Voltage)2 1100 W
Sensitivity3 100 dB
Maximum continuous SPL4 130.4 dB
Maximum peak SPL4 136.4 dB
Rated Impedance 4Ω
Recommended Amplifier Power 2200 Watts
Transducer Two 18-inch (457 mm) woofers, 4-inch. voice coils
Enclosure Details 
Input Connector 4-position barrier strip
Enclosure Material MDF, 19 mm
Grille      None
Dimensions (HxWxD) 33.15 x 42.5 x 16.5 inches (842 x 1080 x 420 mm)
Net Weight 187 lb (89 kg)

1 Half-space (2 pi), unprocessed, -10 dB from on-axis sensitivity
2 AES2-1984 noise signal for 2 hrs
3 On-Axis, free-field sensitivity, 2.83V, 1 m
4 Calculated from rated noise voltage and sensitivity

Specifications are subject to change without notice.