Features and Applications
Features
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Applications
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Product Details SXP218
SXP218 is a powered subwoofer for CDD-LIVE full-range systems and other supported professional applications. Its published operating range is 35–150 Hz ±3 dB. Maximum output is 143 dB peak at one metre, supporting theatre, portable reinforcement and premium installed sound.
Two long-excursion 18-inch drivers with 4-inch voice coils, water-resistant cones and triple-roll surrounds operate in a reflex enclosure. Eight large ports reduce airflow noise while the driver design limits power compression and distortion.
Built-in Class D amplification supplies 4000 W peak, with integrated DSP and Dante networking. The switch-mode supply auto-ranges from 100 to 240 V, 50/60 Hz, and includes power-factor correction. Gain, parametric EQ, delay, mute and presets can be controlled over Ethernet from a PC or supported Windows tablet through VU-NET.
Rear-panel presets support CDD-LIVE 8, 12 and 15, plus a user-defined configuration, without requiring computer control for simple setups. Additional presets are provided for the rear-facing cabinet in a cardioid pair.
Dante provides an alternative to the analogue inputs, distributing digital audio and control over CAT5 cabling. This supports longer signal routes while maintaining the digital audio path.
The polyurea-finished multi-laminate plywood enclosure has a perforated Zintec grille, four handles, skids, M10 suspension points and a pole fitting. Wheels are optional.
The manufacturer specifies an input-board cover/rain-cowl arrangement for weather-resistant installation. Its published IP24 option applies to that configured product.
Explore the Martin Audio SX subwoofers at B-Star for the available system options.
Technical Specifications SXP218
ACOUSTICS |
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| TYPE | Switch mode, fixed frequency with PFC |
| FREQUENCY RESPONSE (3) | 35Hz – 150Hz ±3dB, -10dB @ 30Hz |
| DRIVERS | 2x 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone |
| MAXIMUM SPL (4) | 140dB continuous / 143dB peak |
| DISPERSION | Omnidirectional / or Cardioid (paired) |
| CROSSOVER | Active Presets for CDD Live 8, 12 & 15 mono-pole or cardioid (paired) |
INTEGRATED AMPLIFICATION AND DSP |
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| INTEGRATED PROCESSING | Multi-channel DSP, programmable via TCP/IP using VU-NET software; PEQ/shelving filters; maximum 48dB/Oct LPF; maximum 200mS input delay; rear-panel preset selector |
| TYPE | Switch mode, fixed frequency with PFC |
| PEAK OUTPUT POWER | 4000W |
| AVERAGE EFFICIENCY | 89% |
INPUTS, OUTPUTS AND CONTROL |
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| INPUT SENSITIVITY | -30dBu for 100dB SPL |
| AUDIO CONNECTORS | Female XLR input; male XLR link output; Dante audio on Neutrik® etherCON |
| ANALOGUE INPUT IMPEDANCE | 20 kΩ balanced to ground |
| MAXIMUM ANALOGUE INPUT LEVEL | 24.6 Vpp (+21dBu), over voltage protected |
| CONTROL NETWORK CONNECTORS | 2 × Neutrik® etherCON RJ45 |
| CONTROL PROTOCOL | TCP/IP and UDP/IP |
POWER SUPPLY AND COOLING |
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| COOLING | External fan |
| MAXIMUM AMBIENT TEMPERATURE | 40°C (104°F) for full output |
| POWER SUPPLY TYPE | Fixed-frequency switch-mode power supply with PFC |
| AC INPUT OPERATING RANGE | 85 – 265V ~ AC, 50 – 60Hz |
| POWER FACTOR | > 0.98 |
| NOMINAL POWER CONSUMPTION | 550W |
| MAINS CONNECTOR | Neutrik® Powercon True1 |
ENCLOSURE, MOUNTING AND ENVIRONMENT |
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| ENCLOSURE | Extensively braced multi-laminate birch plywood. |
| FINISH | Durable Polyurea Coating |
| PROTECTIVE GRILLE | Black perforated Zintec |
| FITTINGS | Two skids with mating channels in the top; 16 × M8 inserts for optional castors; 24 × M10 fixing points; 4x bar handles, 2 per side; 4x fixing points for optional transit cover; M20 threaded pole-mount insert |
| IP RATING | IP24 factory option available |
DIMENSIONS AND WEIGHT |
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| DIMENSIONS | (W) 1085mm x (H) 537mm x (D) 792mm (920mm including castors) (W) 42.72in x (H) 21.13in x (D) 31.16in (36.20in including castors) |
| WEIGHT | 101.5 kg (224 lb) without castors; 105 kg (231 lb) with castors. |
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