FBT X-Sub 115SA
Professional music gear - detailed information and where to buy
FBT
X-Sub 115SA
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The FBT X-Sub 115SA is a solid, affordable subwoofer choice for smaller to mid-sized gigs – think wedding bands, DJs, or smaller concert venues. The birch construction feels premium, and the DSP gives you a good starting point for shaping your low end. It’s a workhorse that'll add serious thump without breaking the bank.
Product Description
- FBT X-Sub 115SA
- Active Bass-Reflex Subwoofer
- Drivers: 15" woofer with 3" voice coil
- Power: 1200 W
- Class D amplifier
- Frequency range: 42 - 120 Hz (-6 dB)
- Maximum level: 135 dB
- Crossover frequency: 80 Hz or 120 Hz
- DSP signal processor with 4 presets
- Stereo input with link out
- High-pass filter outputs: XLR (stereo)
- Phase switch 180°
- M20 Thread
- Prepared for castor mounting (castors not included)
- Enclosure material: Birch Plywood
- Dimensions (W x H x D): 455 x 586 x 570 mm
- Weight: 30.0 kg
- Colour: Black
PROS
- • Birch plywood enclosure provides excellent resonance damping and durability.
- • Powerful Class D amp delivers clean, impactful low-end extension.
- • DSP presets offer flexibility for various sound reinforcement scenarios.
- • The M20 thread allows for easy integration with speaker stands and rigs.
CONS
- • Weight (30kg) makes transport a challenge without proper equipment.
- • Limited low-frequency extension compared to larger, dual-driver subs.
- • Lack of a user-adjustable EQ beyond the presets restricts fine-tuning.
Product Video
Key Features
Power (Watts)
1200
Woofer Size
15 in
Frequency Range
42 - 120 Hz
Max SPL
135 dB
Crossover
80/120 Hz
Weight
30.0 kg
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Frequently Asked Questions
FBT offers a competitive price point with a slightly more neutral low-end response compared to some of the more hyped-up options from JBL or Mackie, but might lack the absolute top-end SPL.
The presets are a great foundation, but if you’re a serious sound engineer who demands granular control, you’ll likely want to run it through an external EQ or processor.
You'll get a respectable low-end presence, extending comfortably down to around 45Hz, but don't expect sub-bass frequencies you'd get from a much larger enclosure.
