Description
The Martin Audio SX115 is a versatile passive subwoofer designed to deliver powerful and dynamic low-frequency reinforcement from a compact enclosure. Equipped with a high-performance 15-inch long-excursion driver featuring a water-resistant cone and triple-roll surround, the SX115 provides impressive bass extension and high output capability for both portable and installed sound systems. Its four large reflex ports enhance low-frequency efficiency while minimizing air turbulence and port noise, ensuring clean and impactful bass performance even at high output levels.
More Information
Key Features
- Compact direct-radiating subwoofer
- High-performance 15-inch long-excursion LF driver
- 4-inch voice coil with ferrite motor
- Water-resistant cone and triple-roll surround
- High-output low-frequency performance
- Large reflex ports for reduced air noise
- Compact enclosure for easy deployment
- Can operate in omnidirectional or cardioid configurations
- Durable plywood enclosure construction
- Extensive rigging and mounting options
- Pole-mount capability for satellite speakers
- Suitable for portable and fixed installations
Technical Specifications
- Type: Direct-Radiating Subwoofer
- Crossover Frequency: 100Hz
- Frequency Response: 45Hz – 100Hz (±3dB), -10dB @ 36Hz
- Driver: 15″ LF Driver with 4″ Voice Coil and Ferrite Motor
- Sensitivity: 100dB (2.83V/1m Half Space)
- Nominal Impedance: 8 Ohms
- Power Handling: 800W AES, 3200W Peak
- Maximum SPL:
- 129dB Continuous
- 135dB Peak
- 141dB Peak (Crest Factor 4)
- Dispersion: Omnidirectional or Cardioid (when paired)
- Connectors: 2 × NL4
- Input Pin Connections: 1+ / 1-
- Link Pin Connections:
- 1+ / 1− (linked from input)
- 2+ / 2− (linked from input)
- Enclosure Material: Plywood
- Pole Mount: M20 Top-Mounted Thread Plate
- Handles: 2 Pocket Handles
- Mounting Points:
- 24 × M10 Mounting Points
- 16 × M8 Inserts for Optional Castors
- Additional Features:
- Base Skids with Mating Top Channels
- Dimensions (W × H × D): 500 × 451 × 678 mm
- Depth with Castors: 806 mm
- Weight: 36.5 kg






