The FBT X-SUB 112SA is a compact 12-inch active subwoofer designed to deliver tight, controlled low-frequency reinforcement for live sound and portable PA systems. It is an ideal companion for FBT X-LITE and X-PRO active speakers, while its flexible connections and DSP settings also allow it to integrate with other suitable PA systems.

A high-excursion 12-inch woofer with a 2.5-inch voice coil is powered by an integrated 1200W Class D amplifier. The bass-reflex enclosure delivers a 48Hz–120Hz frequency response and up to 133dB peak SPL, providing impressive output and punch from a compact cabinet.

Four DSP Presets for Flexible Bass Response

The onboard DSP offers four presets, combining two response styles with two different cut-off frequencies. The Original setting delivers a balanced, general-purpose FBT sound, while the Punch setting provides a drier response with increased energy for rock music and higher-SPL applications.

Stereo inputs, link outputs and high-pass-filtered outputs provide flexible system configuration. Rear-panel controls include level adjustment, DSP preset selection and 0°/180° phase reversal to help optimise the transition between the subwoofer and connected satellite speakers.

Durable and Portable Birch Plywood Cabinet

The enclosure is manufactured from 15mm birch plywood and finished with scratch-resistant black paint for dependable portable and installation use. Two aluminium handles assist with transportation, while the top-mounted M20 pole socket allows a compatible satellite speaker to be supported above the subwoofer using a suitable threaded distance pole.

Key Features

• Compact processed active bass-reflex subwoofer
• High-excursion 12-inch low-frequency woofer
• 2.5-inch woofer voice coil
• Integrated 1200W Class D amplifier with switching power supply
• Frequency response: 48Hz–120Hz at -6dB
• Maximum SPL: 129dB continuous and 133dB peak, measured in half-space
• Omnidirectional dispersion
• Onboard DSP processor with four presets
• Original general-purpose and Punch response options
• Two selectable cut-off frequencies
• Stereo input connections
• Loop/link outputs for connecting additional equipment
• High-pass-filtered outputs for compatible active satellite speakers
• Adjustable input level
• 0°/180° phase-reversal switch
• Protection and limiter status indicator
• 22kΩ input impedance
• 15mm birch plywood construction
• Scratch-resistant black painted finish
• Top-mounted M20 threaded pole socket
• Two aluminium carrying handles
• 5m power cable
• AC power requirement: 600W
• Dimensions (W × H × D): 385 × 500 × 485mm
• Weight: 23.5kg

Frequently Asked Questions

Q: Is the FBT X-SUB 112SA an active subwoofer?

A: Yes. It has an integrated 1200W Class D amplifier, so it does not require a separate external power amplifier.

Q: How low does the X-SUB 112SA play?

A: Its specified frequency response is 48Hz–120Hz at -6dB, providing controlled low-frequency reinforcement for portable PA and live sound systems.

Q: What is the maximum output of the X-SUB 112SA?

A: It produces a maximum continuous SPL of 129dB and a peak SPL of 133dB when measured in half-space.

Q: What do the four DSP presets provide?

A: The presets combine Original and Punch response styles with two different cut-off frequencies. Original is suitable for general-purpose use, while Punch provides a drier, more energetic response for rock music and high-output applications.

Q: Which speakers can be used with the FBT X-SUB 112SA?

A: It is designed as an ideal low-frequency companion for FBT X-LITE and X-PRO speakers. Its link and high-pass-filtered outputs also provide options for integration with other compatible active PA speakers.

Q: Can a satellite speaker be mounted above the subwoofer?

A: Yes. The cabinet has an M20 threaded pole socket for supporting a compatible satellite speaker with a suitable M20 distance pole.

Q: Can multiple X-SUB 112SA subwoofers be connected?

A: Yes. The link outputs can pass the audio signal to additional active subwoofers or speakers. Each connected active unit will still require its own mains power supply.