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Martin Audio

Martin Audio SXP218B 2x18" High-Performance Powered Subwoofer

$7,000.00

Martin Audio's SXP218B compact, high-performance 2 x 18" powered subwoofer adds power and a host of features to their standard SX218 sub. A 4000W peak output onboard amplifier delivers low end down to 35Hz at up to 143dB SPL (Sound Pressure Level). A compact enclosure and its direct radiation operating principle allow the SXP218B to deliver its powerful bass where space is a concern. The design of the 18" drivers coupled with eight reflex ports make the SXP218B extremely efficient while maximizing output and reducing distortion to deliver signature Martin quality audio.

Along with integrated power comes DSP (Digital Signal Processing) functions like parametric EQ, delay, mute, gain, and preset which can even be controlled via Ethernet from a PC or Windows tablet running Martin's VU-NET software. You'll also enjoy support for Dante digital audio networking to simplify setup, routing, and enhance control. Dante provides distribution and control with a single CAT5 connection, maintaining audio quality no matter the length of the cable run.

Multi-laminate birch ply with a rugged poly coating form the cabinet for the dual 18" speakers that are protected from the outside world by a Zintec (zinc-coated steel) grille to ensure reliability show after show. The tour-grade enclosure features twin grab handles, skids, M10 flying inserts, and an M20 socket for pole-mounting point source loudspeakers. 

View Product Features

  • 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
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About the Martin Audio SXP218B 2x18" High-Performance Powered Subwoofer

A self-powered system, the SXP218 incorporates a Class D 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. 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-NET™ proprietary software.

For simple set-ups, ‘plug-and-play’ presets for operation with the CDD-LIVE 8, CDD-LIVE 12 or CDD-LIVE 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 SXP218 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 Zintec grille, four grab handles, skids and M10 flying inserts. SXP218 also features an M20 pole mount insert for added versatility in deployment.

The product is supplied as standard without cabinet wheels, but they are available as an accessory.

By adding the input board cover accessory, the subwoofer is fully weather resistant and suitable for permanent outdoor usage.

Key Features

  • 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

Martin Audio SXP218B 2x18" High-Performance Powered Subwoofer Specs

Acoustics
TYPE
Dual-driver, direct radiating powered subwoofer
FREQUENCY RESPONSE
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
140dB continuous / 143dB peak
DISPERSION
Omnidirectional / or Cardioid (paired)
CROSSOVER
Active Presets for CDD Live 8, 12 & 15 mono-pole or cardioid (paired)
Module Audio input
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
Amplifier Module
TYPE
Two 2 channel switch-mode, class D, Bridged Tied Load
PEAK OUTPUT POWER
4000W
AVERAGE EFFICIENCY
89%
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
NOMINAL POWER CONSUMPTION
550W
MAINS CONNECTOR
Neutrik® Powercon True1
Mechanical
ENCLOSURE
Extensively braced multi-laminate birch plywood.
FINISH
Durable Polyurea Coating
PROTECTIVE GRILLE
Black perforated Zintec
FITTINGS
Two skids on base, with mating channels on top 16 x M8 inserts for optional castors 24 x M10 mounting points 4x Bar handles, 2 on each side 4x fittings for optional transit cover M20 Pole mount insert
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
101.5kg (224lbs) w/o castors 105kg (231lbs) with castors

Key Features

  • 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
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