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For Live Stage, Theater, DJ Setups
2x 18" Woofer
30Hz to 120Hz Frequency Response
1200W RMS Class D Power Amplifier
Switch Mode Power Supply
Stereo XLR Jack Inputs with Link Outputs
LED Status Indicators
Bass-Reflex Design
Ergonomic Integrated Carry Handles
Includes AC Power Cable

The SUBLine 218SA from FBT is a 1200W RMS active subwoofer with two 18" woofers in a bass-reflex design. It can be used to extend the low frequency response to a wide range of FBT speaker systems for applications such as live stage, theater, houses of worship, DJ setups, clubs, and more.

The SUBLine 218SA has several other features such as a frequency response of 30 to 120 Hz and a 1200W class D power amplifier that uses a switch mode power supply. The built-in digital signal processor has 6 presets, 3 equalization and 2 LPF crossover settings, to allow the sub to be configured with any speaker.

The 15 mm birch-plywood enclosure for the SUBLine 218SA, which has an anti-scratch paint finish, features a control-panel that has stereo XLR/jack inputs/outputs; in addition, a volume control, EQ presets, a 0 to 180° phase switch, and a LED status indicator located on the rear panel. Also built into the enclosure are 2 aluminum integrated carry handles and a M20 stand adapter to mount a two-way speaker (sold separately). Power is supplied using the included AC power cable.

2x 18" neodymium high-excursion woofer with a 3" voice coil.
DSP processor with 6 available presets
Maximum sound pressure level is continuous at 137 dB and peaks to 140 db
The built-in control panel has stereo XLR in/outs, volume, EQ presets, delay, phase reversal switch 0°-180° and 3 status LED Indicators
Features a 15 mm birch plywood enclosure with anti-scratch paint finish
Built-in M20 stand adapter, 2 aluminum integrated handles

Configuration 1
Amplifier Continuous RMS 900
Max. Continuous Power RMS 1200
Amplifier Max Peak 2400
Frequency Response 30 Hz to 120 Hz @-6 dB
Low Frequency Driver 2x 18" (460 mm) - 3" (75 mm) coil
High Frequency Driver None
Maximum Sound Pressure Level (SPL) Continuous 136, peak 140 half-space
Dispersion Omnidirectional
Input Impedance 22 kOhms
Crossover Frequency N/a
AC Power Requirements 800 VA
Input Connectors Stereo XLR with loop outputs
Power Cord 16.4' (5.0 m)
Dimensions (W x H x D) 38.2 x 26.0 x 26.4" (970 x 660 x 670 mm)
Weight 178.6 lb (81 kg)


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