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Martin Audio CSX-LIVE 218 Subwoofer (CSX-LIVE218) with a maximum SPL capability of 143dB peak at 1 meter

4000-Watt, dual 18" units, onboard DSP and Dante networking

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What's in the box:

  • CSX-LIVE 218 Subwoofer
  • Transit Cover


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Martin Audio's 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 maximizes output while minimizing 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 meter, 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 ClassD amplifier, DSP and Dante™ 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.


  • 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
  • Dante™ Digital Audio networking
  • Global mains operation with Power Factor Correction
  • Tour-grade plywood enclosure with flying inserts
  • IP24 rating option with rain cowl

Specifications for the Martin Audio CSX-LIVE 218 Subwoofer

{ "Acoustics" : { "Type" : "Dual-driver, direct radiating powered subwoofer", "Frequency Response" : "35 Hz - 150 kHz ±3 dB, -10 dB @ 30 Hz", "Driver" : "2 x 18" (460 mm)/4" (100 mm) voice coil, long excursion, ferrite magnet, waterproof cone", "Input Sensitivity" : "-30 dBu for 100 dB SPL", "Maximum SPL" : "140 dB continuous, 143 dB peak", "Dispersion" : "Omnidirectional or Cardioid (paired)", "Crossover" : "Active presets for CDD-LIVE 8, 12, and 15 mono-pole or cardioid (paired)" }, "Module Audio Input" : { "Connectors" : " Female XLR input, male XLR link output, Dante Audio Neutrik EtherCON", "Analog Input Impedance" : "20 kOhms balanced to ground", "Maximum Analog Input Level" : "24.6 Vpp (+21 dBu), over voltage protected", "Internal Processing" : [ "Multi-channel DSP, programmable via TCP/IP using VU-Net software", "PEQ/shelving filters", "Up to 48 dB/oct HPF", "Up to 200 ms input delay", "Pre-set selection via rear panel switch" ] }, "Network" : { "Connectors" : "2 x Neutrik EtherCON RJ45", "Protocol" : "TCP/IP and UDP/IP" }, "Amplifier" : { "Type" : "2-channel switch-mode, Class D, bridged tied load", "Peak Output Power" : "4000 W", "Average Efficiency" : "89%", "Cooling" : "External fan", "Maximum Ambient Temperature" : "104° F (40° C) for full output" }, "Power Supply" : { "Type" : "Switch mode, fixed frequency with PFC", "AC Input Operating Range" : "85 - 265 VAC, 50/60 Hz", "Power Factor" : ">0.98", "Nominal Power Consumption" : "250 W", "Mains Connector" : "Neutrik PowerCON True1" }, "Mechanical" : { "Enclosure" : "Extensively braced multi-laminate plywood", "Finish" : "Textured black PU coating", "Protective Grille" : "HEX perforated mild steel with protective zinc plating and black powder coat finish. Back with black grille cloth", "Fittings" : [ "Two skids on base, with mating channels on top", "Four rear-mounted 4" (100 mm) casters", "24 x M10 mounting points", "Four bar handles, two on each side", "Four fittings for optional transit cover" ], "Dimensions" : "42.72" W x 21.13" H x 31.16" D (1085 x 537 x 792 mm)(excluding casters)", "Weight" : "231 lbs (105 kg) excluding transit cover" } }

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