Description
The Martin Audio SX218 is a high-output dual-driver direct-radiating subwoofer engineered to deliver exceptional low-frequency extension, impact, and transient response for demanding touring and installation applications. Equipped with two 18-inch long-excursion drivers featuring waterproof cones and powerful 4-inch voice coils, the SX218 produces deep, powerful bass with minimal distortion and outstanding efficiency. Its rugged tour-grade enclosure, high SPL capability, and flexible deployment options make it an ideal choice for professional sound reinforcement systems requiring maximum low-frequency performance.
More Information
Key Features
- Dual-driver direct-radiating subwoofer
- Two high-performance 18-inch long-excursion LF drivers
- 4-inch voice coils with ferrite magnet structures
- Waterproof cone technology for increased durability
- Exceptional low-frequency extension down to 30Hz
- Very high output capability with excellent transient response
- Low distortion performance at high SPL levels
- Omnidirectional or cardioid operation when paired
- Tour-grade birch/poplar plywood enclosure
- Durable Polyurea protective coating
- Extensive rigging and mounting options
- Integrated pole-mount capability
- Designed for touring and permanent installation applications
Technical Specifications
- Type: Dual-Driver Direct-Radiating Subwoofer
- Frequency Response: 35Hz – 150Hz (±3dB), -10dB @ 30Hz
- Drivers: 2 × 18″ (460mm) Long-Excursion Drivers with 4″ (100mm) Voice Coils, Ferrite Magnets and Waterproof Cones
- Power Handling: 2000W AES, 8000W Peak
- Sensitivity: 105dB
- Maximum SPL: 144dB
- Nominal Impedance: 2 × 8 Ohms
- Dispersion: Omnidirectional or Cardioid (when paired)
- Enclosure Material: Multi-Laminate Birch/Poplar Plywood
- Finish: Durable Polyurea Coating
- Grille: Black Perforated Zintec Steel
- Connectors: 2 × NL4 Type
- Input Pin Connections:
- LF1: 1+, 1-
- LF2: 2+, 2-
- Link Pin Connections:
- LF1: 1+, 1-
- LF2: 2+, 2-
- Mounting Features:
- 24 × M10 Mounting Points
- 16 × M8 Inserts for Optional Castors
- M20 Pole-Mount Insert
- Handles:
- 4 Bar Handles (2 per side)
- Additional Features:
- Base Skids with Mating Top Channels
- 4 Fittings for Optional Transit Cover
- Dimensions (W × H × D): 1093 × 537 × 792 mm
- Depth Including Castors: 920 mm
- Weight:
- 98.5 kg (Without Castors)
- 102 kg (With Castors)
