FBT VERTUS CLA 118S Passive Subwoofer

FBT VERTUS CLA 118S Passive Subwoofer

FBT VERTUS CLA 118S is a passive subwoofer with one 18-inch B&C driver in a bass-reflex cabinet.

FBT recommends an external 1600 W RMS amplifier. The loudspeaker has a 600 W long-term rating and 4 Ω nominal impedance; it has no built-in amplifier or internal crossover.

Operation requires an external processor or processed amplifier with an FBT-authorised DSP preset. Two Neutrik NL4M Speakon connectors provide input and link on the rear panel.

The birch-plywood cabinet has a port designed to reduce airflow turbulence. Side handles help with handling, while mounting points support FBT-specified system configurations.

Main Features

• An 18-inch B&C driver with a 3-inch voice coil supplies bass in a CLA system.
• The 1600 W RMS value specifies a recommended external amplifier, not built-in electronics.
• An FBT DSP preset is required for system alignment and driver protection.
• There is no internal crossover, so frequency division takes place externally.
• Two Speakon connectors accept the amplifier feed and link it to another loudspeaker.
• The 4 Ω nominal impedance matters when selecting a compatible power amplifier.
• Suitable external DSP presets support cardioid configurations with multiple subwoofers.
• The cabinet port is designed to reduce turbulence at high output levels.
• Two aluminium handles assist with moving the 39.5 kg enclosure.

Technical Specifications

• Product Type: passive bass-reflex subwoofer
• FBT Product Code: 46251
• Low-Frequency Driver: 1 × 18 in, 3 in coil
• Recommended External Amplifier: 1600 W RMS
• Long-Term Power: 600 W
• Short-Term Power: 3200 W
• Impedance: 4 Ω
• Frequency Response: from 33 Hz (-6 dB), upper limit depends on DSP preset
• Sensitivity: 97 dB (1 W / 1 m)
• Maximum SPL: 134 / 138 dB (continuous / peak, half-space)
• Recommended High-Pass Filter: 30 Hz, 24 dB/oct
• Required DSP: FBT-authorised external processor preset
• Connectors: 2 × Neutrik NL4M Speakon (input / link)
• Pole Mount: M20
• Cabinet: 15 mm birch plywood
• Dimensions (W × H × D): 555 × 572 × 660 mm
• Product Weight: 39.5 kg

What’s Included

• 1 × FBT VERTUS CLA 118S passive subwoofer

Who Is It For

For live and installed FBT CLA systems that need low-frequency reinforcement. A compatible external amplifier and FBT-authorised DSP preset must be selected before use.

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

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