FBT SUBLINE 218SA Active Subwoofer

FBT SUBLINE 218SA Active Subwoofer

The FBT SUBLINE 218SA is an active bass-reflex subwoofer with two 18-inch low-frequency drivers.

A built-in 1200 W RMS Class D amplifier drives both woofers, each with a 3-inch voice coil. Its specified frequency response is 30–100 Hz (-6 dB), while peak SPL reaches 140 dB in half-space.

The DSP offers six presets, including cardioid and infra configurations. Adjustable delay and phase reversal help align the subwoofer with the rest of a sound system.

Stereo XLR inputs accept the source signal, and XLR link outputs pass it onward. The birch plywood cabinet has four aluminium handles and two top-mounted M20 pole sockets.

Main Features

• Two 18-inch woofers with 3-inch voice coils form the model's low-frequency system.
• The built-in 1200 W RMS Class D amplifier removes the need for a separate power amplifier.
• Six DSP presets provide choices for different low-frequency system setups.
• Cardioid and infra presets adapt the DSP to different low-frequency system setups.
• Adjustable delay helps align this subwoofer in time with the main loudspeakers.
• A phase reversal switch provides 0° and 180° positions for system alignment.
• Stereo XLR inputs and link outputs accept a source and pass the signal onward.
• Two M20 sockets accept suitable speaker poles, while four handles assist with moving the cabinet.

Technical Specifications

• Manufacturer code: 38774
• System: active bass-reflex subwoofer
• LF woofers: 2 × 18 in, 3 in voice coils
• Amplifier: 1200 W RMS, Class D
• Peak amplifier power: 2400 W
• Frequency response: 30–100 Hz (-6 dB)
• Maximum SPL: 137 dB continuous / 140 dB peak (half-space)
• Dispersion: omnidirectional
• Crossover frequency: 100 Hz
• Input impedance: 22 kΩ
• DSP and controls: 6 presets, delay, phase reversal
• Connections: stereo XLR inputs and XLR link outputs
• Mounting: 2 M20 pole sockets
• AC power requirement: 1050 VA
• Power cord length: 7 m
• Enclosure: 18 mm birch plywood with a scratch-resistant finish
• Dimensions (W × H × D): 970 × 661 × 670 mm
• Product net weight: 83.5 kg

What’s Included

• 1 × FBT SUBLINE 218SA active subwoofer

Who Is It For

Suitable for the low-frequency section of larger live sound and DJ systems, as well as fixed installations in halls and clubs that need dedicated bass reinforcement.

Can’t find the FBT product you are looking for?

Contact us: info@stageiq.lt or +370 636 55536.