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Martin Audio CSX-LIVE 218 Powered Subwoofer Black

Product Code MACSX-LIVE218
Manufacturer Martin Audio

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The CSX-LIVE 218 achieves the ultimate in subwoofer performance for the most demanding professional applications - delivering very high output levels and superb transient performance with minimal distortion. With an operating range of 35Hz-150Hz ± 3dB, it houses dual 18" long-excursion (460mm)/4" (100mm) voice coil drivers with water-resistant cones and triple roll surrounds. The design of the 18" drivers maximises output while minimising power compression and distortion, and the eight reflex ports have a large frontal area to reduce turbulent air noise at very high levels. With a prodigious maximum SPL capability of 143dB peak at 1 metre, the CSX-LIVE 218 is the ideal subwoofer for touring sound reinforcement, theatre and portable live sound applications - as well as premium installations - that require low frequency augmentation with low distortion at very high output levels.

A self-powered system, the CSX-LIVE 218 incorporates a Class D amplifier, DSP and DanteTM digital audio networking - simplifying set-up, enhancing control and eliminating amplifier racks. The onboard amplifier delivers a total of 4000W peak output to the drivers, and its switched-mode power supply auto-ranges to global mains voltages from 100 to 240V 50/60Hz. DSP functions - including parametric EQ, delay, muting, gain and preset selection - can be controlled over Ethernet from a PC or Windows® tablet via intuitive VU-NETTM proprietary software.

For simple set-ups, ‘plug-and-play' presets for operation with the CDD-LIVE 8, 12 or 15 - as well as a user-defined preset - can be selected on the rear panel, instead of using computer control. Additional presets provide the appropriate settings for the rear-facing subwoofer in a cardioid pair.

As an alternative to its analogue inputs, the CSX-LIVE 218 is Dante enabled for digital audio distribution and control over a single CAT5 cable to maintain audio quality however long the cable run.

The enclosure is constructed from multi-laminate plywood with a durable polyurea coating and equipped with a perforated steel grille, four grab handles, skids and M10 flying inserts.


  • Dual-driver, self-powered subwoofer
  • 2 x 18" (460mm) drivers with 4" (100mm) voice coils
  • Very high output capability
  • Onboard Class D amplification and DSP
  • DanteTM Digital Audio networking
  • Global mains operation with Power Factor Correction
  • Tour-grade plywood enclosure with flying inserts
  • IP24 rating option with rain cowl


  • Live sound reinforcement
  • Theatre sound
  • Corporate AV events
  • Fixed installations in concert halls, ballrooms and HoW
  • Bars and clubs
  • TYPE Dual-driver, direct radiating powered subwoofer
  • RESPONSE (3) 35Hz - 150Hz ±3dB, -10dB @ 30Hz
  • DRIVER 2x 18" (460mm)/4" (100mm) voice coil, long excursion, ferrite magnet,
  • waterproof cone
  • INPUT SENSITIVITY -30dBu for 100dB SPL
  • 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)
  • CONNECTORS Female XLR input, male XLR link output, Dante Audio Neutrik® Ethercon
  • ANALOGUE INPUT IMPEDANCE 20 kΩ balanced to ground
  • MAXIMUM ANALOGUE INPUT LEVEL 24.6 Vpp (+21dBu), over voltage protected
  • Internal Processing Multi-channel DSP, programmable via TCP/IP using VU-Net software
  • PEQ/shelving filters
  • Up to 48dB/Oct LPF
  • Up to 200mS input delay
  • Pre-set selection via rear panel switch
  • CONNECTORS 2xNeutrik® Ethercon RJ45
  • TYPE Two 2 channel switch-mode, class D,
  • Bridged Tied Load
  • COOLING External fan
  • MAXIMUM AMBIENT TEMPERATURE 40°C (104°F) for full output
  • Power Supply
  • TYPE Switch mode, fixed frequency with PFC
  • AC INPUT OPERATING RANGE 85 - 265V ~ AC, 50 - 60Hz
  • POWER FACTOR > 0.98
  • MAINS CONNECTOR Neutrik® Powercon True1
  • ENCLOSURE Extensively braced multi-laminate birch plywood.
  • FINISH Textured black PU coating.
  • PROTECTIVE GRILLE HEX perforated mild steel with protective zinc plating and black powder coat finish
  • FITTINGS Two skids on base, with mating channels on top
  • Four rear-mounted 100mm (4in) castors
  • 24 x M10 mounting points
  • 4x Bar handles, 2 on each side
  • 4x fittings for optional transit cover
  • Optional weather protection cowl
  • IP RATING IP24 factory option available
  • 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 105kg (231lbs) excluding Transit cover
  • ACCESSORIES Transit Cover


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