Description
The Martin Audio SXHF218 is an ultra-high-output flown Hybrid® horn/reflex subwoofer designed for demanding touring and installation applications where maximum low-frequency performance is required. As the flown version of the SXH218, it is specifically engineered to partner with Wavefront Precision WPL arrays, delivering exceptional bass extension, high acoustic efficiency, and extreme output levels. Featuring dual 18-inch long-excursion neodymium drivers with 4.5-inch voice coils and waterproof cones, the SXHF218 achieves outstanding low-frequency impact while maintaining excellent transient response and minimal distortion.
More Information
Key Features
- Ultra-high-output flown Hybrid® horn/reflex subwoofer
- Dual 18-inch long-excursion neodymium LF drivers
- High-power 4.5-inch voice coils
- Hybrid horn/reflex loading for maximum efficiency
- Exceptional low-frequency extension down to 27Hz
- Very high output capability up to 154dB peak (crest factor 4)
- Waterproof cone technology for enhanced reliability
- Forward-facing or rear-facing deployment options
- Omnidirectional or cardioid operation when paired
- Tour-grade plywood enclosure
- Weather-resistant connector system
- LED status indicators for monitoring
- Designed for flown array applications
Technical Specifications
- Type: Hybrid® Horn/Reflex Subwoofer
- Frequency Response: 32Hz – 150Hz (±3dB), -10dB @ 27Hz
- Drivers:
- 2 × 18″ (460mm) Long-Excursion Drivers
- 4.5″ (115mm) Voice Coils
- Neodymium Magnet Structures
- Waterproof Cones
- Power Handling: 3400W AES, 13600W Peak
- Recommended Amplifier:
- iKON iK42 (Bridged for Full Output)
- Sensitivity: 107dB
- Maximum SPL:
- 142dB Continuous
- 148dB Peak
- 154dB Peak (Crest Factor 4)
- Nominal Impedance: 4 Ohms
- Dispersion: Omnidirectional or Cardioid (When Paired)
- Enclosure Material: Multi-Laminate Birch/Poplar Plywood
- Finish: Hard-Wearing Textured Black Paint (RAL 9005)
- Grille: Black Perforated Steel
- Environmental Ratings:
- IP21
- MIL-STD-810H Tested
- ISO 4892-2 Solar Radiation
- ISO 12944-6 Category C3 Corrosion Resistance
- LED Indicators:
- Front LED
- Rear LED (For Cardioid Configurations)
- Connectors:
- 3 × NLT4MPXX-BAG
- One Front Connector
- Two Rear Connectors
- Weather Protection:
- IP54 Seal with NLT4FX, NLT4FX-BAG or Weatherproof NL4 Sealing Plug
- Input Connections (Front):
- 1+ / 1-
- Input Connections (Rear):
- 1+ / 1-
- Link Connections (Rear):
- 1+ / 1- Linked to 2+ / 2-
- 2+ / 2- Linked to 1+ / 1-
- Handles:
- 6 Bar Handles (3 per Side)
- Transport Features:
- Two Base Skids with Mating Top Channels
- Four Rear-Mounted 100mm (4″) Castors Supplied
- Additional Features:
- 4 Fittings for Optional Transit Cover
- Dimensions (W × H × D):
- 1148 × 604 × 1027 mm
- 1148 × 604 × 1155 mm (Including Castors)
- Weight:
- 144 kg (317 lbs)
- 147.5 kg (325 lbs) Including Castors
