FBT X-SUB 112SA Active Subwoofer

FBT X-SUB 112SA — Compact Active Subwoofer for Live Sound and Portable PA

The X-SUB 112SA is a 12-inch bass-reflex active subwoofer engineered for tight, musical low-frequency reinforcement in live sound and portable PA. A 1200 W Class D amplifier drives a 12" woofer with 2.5" voice coil, pushing up to 133 dB peak SPL across a 48 Hz to 120 Hz response. This sub suits mobile DJs, touring bands and AV installers pairing it with FBT X-LITE or X-PRO tops. The 15 mm birch plywood cabinet weighs 23.5 kg and features two aluminium handles and an M20 pole socket.

What Sets the X-SUB 112SA Apart

Onboard DSP with four presets (Original or Punch response, each with an 80 Hz or 120 Hz cut-off) adapts the low end to the connected tops and the application without external processing. The X-SUB 112SA rear panel adds phase reverse (0°/180°), level control, a protection/limiter LED and dedicated high-pass filtered XLR outputs alongside the XLR link outputs, so the sub can be integrated with the tops in seconds.

Amplification and Acoustic Performance

Class D amplification delivers high-SPL headroom from a compact cabinet.

• Built-in Amplifier: 1200 W Class D — high headroom without external rack gear
• Maximum SPL: 129 dB continuous / 133 dB peak (half-space)
• Frequency Response: 48 Hz to 120 Hz — covers fundamental bass for music and DJ playback

Driver and Cabinet Construction

The 12" driver with 2.5" voice coil handles sustained high-SPL output in a bass-reflex cabinet tuned for tight, musical low-end.

• Low-Frequency Driver: 12" woofer with 2.5" voice coil
• Cabinet Material: 15 mm birch plywood, scratch-resistant black finish
• Net Weight: 23.5 kg

Connectivity and System Integration

Two combo XLR/jack inputs and parallel XLR link outputs let the sub sit between a mixer and a pair of tops, while dedicated XLR outputs send a high-pass filtered signal to satellites without their own HP filter.

• Input / Output: 2× combo XLR/jack input, 2× XLR link output, 2× XLR HP filter output
• Controls: Level, phase reverse (0°/180°), DSP preset selector
• Dimensions (W × H × D): 385 × 500 × 485 mm