Martin Audio XP118 – 18" Powered Portable Subwoofer

Product Overview

The Martin Audio Blackline XP118 is a compact, high-performance, self-powered 18" subwoofer engineered to extend the low-frequency operating range of XP series full-range loudspeakers down to 42Hz. It is designed for indoor portable sound reinforcement applications and is the recommended bass complement for the XP12 and XP15 powered PA speakers. Delivering 2,000W of Class D amplification through a single 18" driver with a 4" voice coil, the XP118 provides the low-frequency foundation required for music-forward events, live sound production, and larger corporate AV deployments. Its onboard DSP, flexible deployment modes, and integral flying hardware make it equally viable as a portable touring sub or a permanently rigged bass cabinet.

Product Description

The XP118 completes the Martin Audio Blackline XP series by adding a powered low-frequency extension unit purpose-built to integrate with the XP12 and XP15. A single 18" (460mm) transducer with a high-excursion 4" (100mm) voice coil operates within a compact plywood enclosure tuned to maximize usable bandwidth in indoor applications, delivering output down to 42Hz.

The integrated 2,000W Class D amplifier is the most powerful in the XP series, providing sufficient headroom to reproduce low-frequency program material at levels consistent with live music reinforcement. A global power supply with Power Factor Correction (PFC) ensures stable operation across international voltage standards, supporting rental fleets that travel internationally or operate across varied power infrastructure.

Onboard DSP manages all processing including low-frequency filtering, limiting, and system integration parameters, accessed through a rotary control interface and multi-function display without external processing hardware. Independent peak and RMS limiters protect the 18" driver under sustained high-output conditions. The XP118 supports single-unit ground-stacked omni deployment, dual-unit stacked omni, or DSP-configured cardioid mode for directional low-frequency control — a critical tool for stage-facing subwoofer arrays where rear energy control is required. Integral M10 flying inserts allow the XP118 to be permanently rigged or flown in fixed installation applications. The 35mm pole-mount socket on the top panel supports the XP12 or XP15 in a traditional sub-satellite stack configuration. Optional Bluetooth connectivity allows wireless DSP control and streaming.

Key Features

• 2,000W Class D Integrated Amplifier — The highest output amplifier in the XP series, providing sustained bass headroom for live music and high-SPL event applications.
• 18" Driver with 4" Voice Coil — High-excursion 460mm transducer delivers extended low-frequency output down to 42Hz in indoor applications.
• Onboard DSP with Rotary Control Interface — Integrated digital signal processing manages low-frequency filtering, protection, and system integration without external hardware.
• Cardioid Subwoofer Mode — DSP-configured cardioid deployment reduces rear energy propagation toward the stage — essential for controlled live sound reinforcement environments.
• Omni and Stacked Deployment Support — Flexible configuration for single-unit ground stacking, dual-unit stacking, or cardioid-mode paired deployment.
• 35mm Pole-Mount Socket — Accepts standard 35mm speaker pole for satellite loudspeaker support in portable sub-satellite system configurations.
• Integral M10 Flying Inserts — Supports permanent rigged installation or flown deployment in fixed-install applications.
• Independent Peak and RMS Limiters — Driver protection under sustained high-demand operating conditions.
• Bluetooth Control and Streaming Option — Wireless DSP control and audio streaming for install scenarios with limited physical panel access.
• Global Power Supply with PFC — International voltage compliance for touring and rental fleet applications.
• Durable Plywood Enclosure — Road-ready cabinet construction with screw-free perforated steel grille and integral ergonomic handles.

Typical Applications

• House of worship — low-frequency reinforcement in sanctuaries and large multi-purpose spaces supporting contemporary music programs
• Auditorium and performing arts venue — portable bass extension for live music and theatrical productions
• Multi-purpose room — sub-satellite system base in corporate and event spaces with music playback requirements
• Rental and live event production — portable powered subwoofer for clubs, outdoor stages, and touring corporate AV

Technical Specifications

Frequently Asked Questions

Which full-range speakers does the XP118 pair with?

The XP118 is designed to operate with the Martin Audio XP12 and XP15 powered loudspeakers. The 35mm pole-mount socket on top of the XP118 supports either model in a standard sub-satellite configuration.

What is cardioid subwoofer mode and when should I use it?

Cardioid mode uses DSP processing to configure two stacked XP118 units so that rear-facing energy is cancelled, concentrating bass output toward the audience. This is particularly effective in live sound reinforcement where spill onto the stage needs to be minimized.

How low does the XP118 extend?

The XP118 extends the combined system's low-frequency operating range down to 42Hz in indoor applications, providing adequate coverage for kick drum, bass guitar, and electronic music program material.

Can the XP118 be flown or permanently rigged?

Yes. Integral M10 flying inserts are built into the enclosure, supporting rigged installation in fixed venues. Consult a qualified rigging professional for load calculations and hardware specification.

Does the XP118 have an onboard mixer like the XP12 and XP15?

The XP118 does not include a multi-channel onboard mixer. It receives low-frequency signal from the XP12 or XP15 via the system link, or accepts a full-range input signal that the onboard DSP filters to the low-frequency band.

Is the XP118 currently on sale?

Yes. The XP118 is currently offered at a reduced price at Creation Networks. See the current product page price for details.

Where can I browse the full Martin Audio lineup?

The complete Martin Audio range at Creation Networks is available at creationnetworks.net/collections/martin-audio.