FBT Muse 218 SA – Active Dual 18-Inch Ground-Stack Subwoofer (4000W RMS)
Buy the FBT Muse 218 SA, a high-output active dual 18-inch bass-reflex subwoofer featuring 4000W Class-D amplification, custom B&C transducers, and onboard DSP processing. In stock, fast UK delivery.
The FBT Muse 218 SA is an ultra-high-output, professional active dual 18-inch ground-stack subwoofer engineered for large-scale touring applications, outdoor festivals, high-capacity nightclubs, and live performance venues. Driven by an impressive 4000W RMS Class-D amplifier module, this heavy-duty bass-reflex enclosure delivers massive low-frequency reinforcement down to 30 Hz with a staggering maximum SPL output of 143.5 dB. Loaded with two custom-designed 18-inch B&C neodymium woofers featuring 4-inch voice coils, the Muse 218 SA combines immense acoustic power with precise transient response. Housed in a birch plywood cabinet with a scratch-resistant black finish, eight integrated handles, and eight M10 rigging points, it stands as an uncompromising low-end foundation for the FBT Muse line array system.
Staff Take: The Expert Verdict
The single strongest selling point of the FBT Muse 218 SA is its incredible combination of 4000W Class-D power density and refined Italian acoustic engineering. The standout feature is its integrated DSP engine with selectable presets, which lets production technicians quickly deploy cardioid subwoofer arrays to reject rear low-end spill on stage without needing external system controllers. We highly recommend this dual 18-inch sub for touring production companies, festival organizers, and venue installers who require visceral, chest-thumping sub-bass performance with rock-solid reliability.
Why Choose the FBT Muse 218 SA Subwoofer?
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Massive 4000W RMS Class-D amplification: Delivers huge power reserves with exceptional thermal efficiency to sustain continuous high-output performance during demanding live shows.
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Dual 18-inch custom B&C woofers: Fitted with high-excursion 18-inch neodymium drivers and 4-inch voice coils for deep, articulate bass extension down to 30 Hz.
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143.5 dB peak SPL output: Generates immense acoustic energy capable of covering massive outdoor festival grounds and high-capacity venue spaces effortlessly.
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Onboard digital signal processing (DSP): Features flexible DSP presets, variable delay settings, and crossover configurations accessible directly via the rear panel.
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Cardioid array capability: Pre-programmed DSP profiles allow quick setup of directional cardioid sub configurations to minimize low-end stage bleed.
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Heavy-duty Baltic birch construction: Constructed from tour-grade 18mm birch plywood with a tough, scratch-resistant polyurea coating designed for harsh road conditions.
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Versatile rigging and transport options: Outfitted with eight ergonomically recessed aluminum handles, eight M10 mounting points, and rear slots for optional heavy-duty transport casters.
Who is the FBT Muse 218 SA best suited for?
The FBT Muse 218 SA is designed first and foremost for touring sound providers, production rental companies, and system integrators who need top-tier low-frequency output for large events. Its physical and acoustic design seamlessly integrates alongside FBT Muse 210 LA line array modules, forming a cohesive, high-performance PA system for concerts, arenas, and outdoor festivals.
For secondary applications, this active subwoofer serves as a premier solution for high-end electronic music venues, large places of worship, and corporate staging providers. The onboard DSP routing makes it easy to configure for various room geometries without requiring complex external drive racks.
FBT Muse 218 SA vs Standard Dual 18 Subwoofers — What's Changed?
The core advantage of moving to the FBT Muse 218 SA over conventional dual 18-inch active subwoofers lies in its superior power-to-weight ratio and integrated DSP intelligence. Where traditional analog-driven subwoofers rely on heavy internal transformers and external system controllers, the Muse 218 SA combines a high-efficiency 4000W Class-D amplifier with internal digital processing in a single self-contained unit.
Secondary enhancements focus on driver technology and enclosure tuning. By incorporating custom Italian-made B&C neodymium transducers, FBT reduces total cabinet weight while increasing voice coil thermal headroom. The tuned bass-reflex enclosure optimizes airflow to eliminate port turbulence and power compression, delivering clean, punchy sub-bass even under extreme load.
How to Set Up the FBT Muse 218 SA
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Position the subwoofer on a flat, level floor surface at the front of stage or ground-stacked beneath line array frames.
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Connect your line-level balanced audio input (from a mixer or system processor) to the female XLR input socket on the rear control panel.
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If linking multiple subwoofers or main tops, use the male XLR link output to pass the balanced signal downstream.
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Select your desired DSP preset (such as crossover frequency or cardioid alignment) using the rear panel rotary selector.
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Connect a heavy-duty Neutrik powerCON TRUE1 mains power cable to the power input socket and twist to lock.
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Power on your audio console first, followed by the subwoofer unit.
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Gradually adjust the rear gain control to match the gain structure of your mid/high speakers.
Technical Specifications
| System Feature |
Specification Details |
| Product Classification |
Active Dual 18-Inch Ground-Stack Subwoofer |
| Amplifier Power Rating |
4000 W RMS Class-D |
| Frequency Response |
30 Hz to 120 Hz (-6 dB) |
| Low-Frequency Transducers |
2 × 18" B&C Neodymium Woofers (4" Voice Coil) |
| Maximum SPL (Peak) |
143.5 dB |
| Dispersion Pattern |
Omnidirectional (Cardioid setup capable via DSP) |
| Input Connectors |
Balanced XLR Input & XLR Link Output |
| Power Connector |
Neutrik powerCON TRUE1 In / Out |
| Cabinet Construction |
18 mm Baltic Birch Plywood with Black Polyurea Finish |
| Rigging / Transport |
8 × M10 Points, 8 × Recessed Handles, Optional Rear Caster Mounts |
| Dimensions (W × H × D) |
1140 mm × 550 mm × 700 mm |
| Net Weight |
95.0 kg |
Frequently Asked Questions
Can the FBT Muse 218 SA be used in a cardioid subwoofer array?
Yes, it can. The onboard DSP includes dedicated cardioid delay and phase presets. By placing one sub facing backward within a cluster and selecting the cardioid preset, you can significantly reduce low-frequency sound spilling behind the array onto the stage.
What main speakers pair best with the Muse 218 SA?
The Muse 218 SA is acoustically and physically engineered to pair perfectly with FBT Muse 210 LA active line array modules, but it works equally well as a ground-stacked sub foundation for any high-output point source or line array PA system.
What type of power connector does this subwoofer use?
The unit utilizes locking Neutrik powerCON TRUE1 power input and loop-output connectors, providing a safe, weather-resistant power connection that prevents accidental disconnections during live performances.
Can I attach wheels to the back of the cabinet for transport?
Yes, the rear panel of the enclosure features pre-drilled mounting slots designed to accept standard heavy-duty 100mm swivel casters, making transport across venue floors and truck ramps significantly easier.
Does this active subwoofer require external processing?
No external processor is required. The built-in DSP manages crossover filtering, equalization, phase alignment, driver protection, and limiter functions automatically.
What's In The Box?
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1 × FBT Muse 218 SA Active Dual 18-Inch Subwoofer
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1 × Neutrik powerCON TRUE1 Mains Power Cable
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1 × User Manual & Setup Guide
Why Buy From DJKIT?
When you source your touring PA equipment from djkit®, you are working with an established UK pro-audio retailer that has served the live event community since 1999. Our technical team tests and configures high-output active PA systems for festivals, venues, and hire companies, offering expert field advice on gain staging, power management, and system alignment.
Whether you need assistance designing a complete line array rig or selecting the right cabling and transport accessories, our sales team is here to help. Contact our specialists today on 01635 780002 or send a message to our main sales support desk. We offer flexible 0% finance options, real-time stock management, and fast UK delivery to keep your production moving forward.
