18 Inch Passive Subwoofer Speaker FU-X318
Deep, Powerful Bass for Professional Sound Systems
Powerful 18 Inch Passive Subwoofer Speaker for Deep, Controlled and High-Impact Bass
There is a moment in every performance when sound stops being heard… and starts being felt.
The 18 Inch Passive Subwoofer Speaker FU-X318 is designed for that moment — when low frequencies become the foundation that supports everything else.
Because in professional audio, bass is not an effect… it is the architecture of sound.
The FU-X318 is engineered to deliver deep, controlled low-frequency reinforcement across a wide range of applications. Its 18-inch driver is built to move significant air volume efficiently, producing bass that is both powerful and defined.
Unlike smaller subwoofers that struggle to reach true low-end depth, this system extends into the lower frequency range with authority. It provides the kind of response that adds weight to music, presence to live sound, and impact to performances.
As a passive subwoofer, the FU-X318 offers flexibility that active systems cannot always match. It allows audio professionals to pair it with external amplification and processing, tailoring the system precisely to the environment and application.
This flexibility is critical in professional setups, where system tuning is not optional but essential. Whether integrated into a large PA system or used as part of an installed setup, the subwoofer adapts to the configuration rather than limiting it.
Its enclosure, built from engineered wood and finished with a durable carpet coating, serves both functional and practical purposes. Structurally, it reduces unwanted resonance and enhances acoustic stability. Practically, it withstands the physical demands of transport, installation, and repeated use.
The result is not just durability, but consistency — a quality often overlooked until it is missing.
In any professional sound system, the absence of proper low-end is immediately noticeable. Music loses depth, energy fades, and the overall experience feels incomplete.
Yet, there is an equally important balance: too much uncontrolled bass can overwhelm a mix, masking detail and reducing clarity.
The FU-X318 18 Inch Passive Subwoofer Speaker is designed to resolve this contradiction. It delivers bass that is deep but controlled, powerful yet precise.
For DJs, sound engineers, and system integrators, this means confidence. Confidence that the low frequencies will support the system rather than dominate it. Confidence that the audience will not only hear the sound — but feel it in a way that enhances the experience.
There is a quiet irony in subwoofers: they are often the least visible part of a system, yet they carry the greatest physical impact.
Like the foundation of a building, they are rarely noticed when they perform well… but everything depends on them.
Choose the 18 Inch Passive Subwoofer Speaker FU-X318 and build a sound system with depth, impact, and professional-level low-frequency performance.
FU-X318 Professional Applications
- Live concerts and sound reinforcement systems
- DJ setups and high-impact music events
- Nightclubs and entertainment venues
- Installed sound systems in large spaces
- Houses of worship requiring extended low-end
- Outdoor events and festivals
- Touring and rental sound systems
External Resources and Technical Information:
- Professional Audio Line Array Design Principles
- Speaker Rigging Safety Standards
- Acoustical Society of America – Sound Reinforcement Resources
US Why Choose FEUR Active Loudspeakers?
FEUR passive subwoofers are designed for professionals who require flexibility, durability, and precise low-frequency control.
Passive systems allow integration with external amplifiers and DSP processors, enabling full customization of the sound system according to venue and application.
The FU-X series focuses on delivering strong low-end response with controlled behavior, ensuring that bass enhances rather than overwhelms the mix.
With robust construction and reliable performance, FEUR subwoofers are suitable for both mobile systems and permanent installations.
| Max SPL Output: | 118dB |
| Sensitivity: | 98dB |
| Crossover Frequency: | 50kHz |
| Frequency Response: | 38Hz – 500Hz |
| Power Rating: | 900W Peak |
| Coverage Pattern | 90º x 50º |
- NAMM Member — Proud member of the National Association of Music Merchants, the global trade association for the music products industry.
- USA Verified — Products manufactured and quality-checked under rigorous USA verification standards.
- CE Marking — Full compliance with European Union safety, health, and environmental protection directives.
- RoHS Compliant — Products are free from restricted hazardous substances in accordance with the RoHS directive.
- 1× FX12-SUB active 12″ subwoofer
- IEC power cable
- User manual
Note: Package contents may vary by region and distribution channel. Contact your authorized FEUR PRO dealer for specific configurations.
Q1: Is the FU-X318 suitable for large sound systems?
A: Yes, it is designed to deliver strong low-frequency support in medium to large setups.
Q2: Does it require an external amplifier?
A: Yes, as a passive subwoofer it must be powered externally.
Q3: Can it be integrated with other speakers?
A: Yes, it works seamlessly with full-range systems.