JBL SRX818S 18″ Passive Subwoofer – Professional Power & Precision Bass
Deliver massive, room-shaking low frequencies with the JBL SRX818S 18″ Passive Subwoofer, a tour-ready powerhouse engineered for professional sound reinforcement. Designed for live events, DJ setups, theaters, and large installations, this subwoofer combines exceptional bass depth, high-output performance, and JBL’s proven reliability for the most demanding audio environments.
Built around the premium JBL 2279H 18″ low-frequency driver, the SRX818S delivers a powerful 2400W peak output with precision-tuned bass response down to 28Hz. Its rugged plywood cabinet with DuraFlex™ finish is crafted for years of touring and transport. At the same time, seamless integration with Crown amplifiers, dbx processors, and HARMAN Audio Architect software makes it a favorite among sound professionals seeking uncompromised performance and control.
Key Features
- 18″ JBL 2279H Transducer – Produces deep, distortion-free bass with tight response and unmatched clarity.
- Massive Power Handling – Delivers 600W continuous, 1200W program, and 2400W peak output for large-scale systems.
- Extended Low-Frequency Range – Reaches down to 28Hz, providing clean, punchy sub-bass ideal for concerts and high-energy performances.
- High SPL Capability – Up to 129 dB peak output, ensuring robust and precise impact across any venue.
- Passive System Flexibility – Works with a variety of amplifiers, allowing engineers to achieve full system customization and control.
- Optimized for JBL Ecosystem – Factory tunings for Crown amplifiers and dbx signal processors for consistent tonal accuracy.
- Audio Architect Integration – Fully supported in HARMAN’s Audio Architect software for remote system monitoring and management.
- Tour-Grade Enclosure – Rugged 18mm birch plywood cabinet with DuraFlex™ coating for lasting protection on the road.
- Perfect Match for SRX800 Series – Pairs seamlessly with SRX812, SRX815, and SRX835 models for a full-range JBL sound experience.
Specifications
| Specification | Details |
| Model | JBL SRX818S |
| Type | 18″ Passive Subwoofer System |
| LF Driver | JBL 2279H 18″ Transducer |
| Power Handling | 600W Continuous / 1200W Program / 2400W Peak |
| Frequency Range | 28Hz – 150Hz |
| Frequency Response | 45Hz – 150Hz |
| Maximum SPL | 129 dB Peak |
| Nominal Impedance | 8Ω |
| Amplification Type | Passive |
| Cabinet Construction | Plywood Enclosure with DuraFlex™ Finish |
| System Integration | Tunings for Crown Amps & dbx Processors |
| Software Compatibility | Supported in HARMAN Audio Architect |
| Applications | Touring, Installations, Theaters, Clubs, Churches |
| Dimensions (W × H × D) | (add JBL’s actual measurements if available) |
| Weight | (add weight here if known) |
Who Should Choose the JBL SRX818S
- Touring professionals seeking a rugged, high-power passive subwoofer for live performances and events.
- Sound engineers require precise low-end control and compatibility with Crown and dbx amplification systems.
- DJs and club owners looking for chest-thumping, low-frequency bass performance in compact enclosures.
- Venue operators and installers need a reliable subwoofer for fixed installations in auditoriums and houses of worship.
- Audio production companies are building SRX800 Series full-range systems for rental or event use.
Frequently Asked Questions
How much power does the JBL SRX818S deliver?
The SRX818S handles 600W of continuous, 1200W of program, and 2400W of peak power, ensuring reliable low-end performance even in high-demand live environments.
What kind of bass response can I expect?
It delivers tight, powerful bass extending down to 28Hz, ideal for deep, immersive low-end reinforcement without muddying the mix.
Is the SRX818S an active or passive subwoofer?
This is a passive subwoofer, meaning it requires an external amplifier, which gives you complete flexibility to choose your preferred amplification system.
Which amplifiers pair best with it?
JBL provides optimized tunings for Crown amplifiers and dbx processors, ensuring balanced tone, clean crossover management, and system protection.
Can it integrate with other JBL speakers?
Yes, it’s designed to perfectly complement the SRX800 Series full-range speakers for a cohesive, professional-grade audio setup.
Is it durable enough for touring?
Absolutely. Its rugged birch plywood cabinet, with DuraFlex coating, withstands frequent transport and demanding stage conditions.
Does it support system monitoring or control software?
Yes. It’s fully compatible with HARMAN’s Audio Architect software, allowing engineers to manage and fine-tune performance within a unified system.
Can this subwoofer be installed permanently?
Yes. The SRX818S is equally suited for fixed installations in performance venues, theaters, churches, and entertainment halls as it is for mobile touring.
