JBL SRX918SF 18-inch Subwoofer
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- Brand new in original box
- Full JBL manufacturer's warranty
- Free shipping in the continental US
In stock
- SKU
- JBL-P3366MX
. Description
JBL SRX918SF 18-inch Powered Subwoofer
The SRX918SF is a heavyweight subwoofer engineered for studio and production environments where deep low-end extension and controlled bass reproduction are essential. This is a purpose-built tool for recording engineers, music producers, and mastering facilities that demand consistent, articulate bass reproduction across mixing sessions ranging from intimate tracking to full-band composition work.
Acoustic Performance
The 18-inch dual voice-coil driver paired with a 2,500-watt Class D amplifier delivers a linear frequency response down to 35Hz and maximum output of 134dB SPL. This combination produces the authoritative bottom end and dynamic headroom necessary for precise low-frequency monitoring without compression artifacts or distortion, allowing you to make confident mix decisions across your entire frequency spectrum.
Design & Studio Integration
Built from 18mm reinforced birch plywood and equipped with an integrated three-point rigging system, the cabinet accommodates both floor placement and suspended mounting configurations to optimize room acoustics. Dual etherCON Ethernet ports enable networked control and real-time DSP adjustment, supporting multi-sub deployments for room correction and phase-aligned bass reinforcement across your tracking or mixing space.
Key Features
- 18-inch JBL 2279G-1 driver with Differential Drive technology and dual 3-inch voice coils
- 2,500-watt Class D amplifier
- 35Hz linear frequency response
- 134dB maximum SPL output
- LevelMax limiting and 24 user-adjustable DSP filters
- 2,000ms signal delay for phase-aligned multi-unit arrays
- Array Size Compensation and FIR-based Throw Distance Correction
- 18mm reinforced birch plywood cabinet construction
- Integrated three-point rigging system for suspended or ground-stacked deployment
- Dual etherCON Ethernet ports for networked control
- Universal power supply
- 4-ohm driver impedance
The SRX918SF combines raw output capability with sophisticated onboard DSP processing and flexible mounting options, making it a reliable workhorse for professional recording and production workflows.
More Information
| Condition | New |
|---|
Reviews
At a Glance
The JBL SRX918SF is a professional powered subwoofer designed for large-scale live reinforcement and installed systems rather than studio recording. Its 35Hz linear response and 134dB output are built for venue projection and outdoor events, not tracking or mixing in a control room. Studio owners should look elsewhere; this tool is purpose-built for touring and festival sound systems.
Who This Is For
Great for
- ✓ Live Performance
- ✓ Touring
- ✓ Large Venue Sound Reinforcement
- ✓ Festival Systems
Not the best pick for
- – Home Recording
- – Practice
- – Small Venue Applications
Skill level: Professional
Frequently Asked Questions
What makes the SRX918SF different from smaller subwoofers?
The 18-inch JBL driver with dual 3-inch voice coils, paired with a 2,500-watt Class D amplifier, delivers 134dB SPL maximum output and linear bass down to 35Hz—far more output and extension than compact subs. It includes networked DSP with 24 user-adjustable filters, Array Size Compensation, and Throw Distance Correction, enabling precise phase alignment across multiple units in complex live systems.
Can it be rigged or suspended?
Yes. The SRX918SF features an integrated three-point rigging system and 18mm reinforced birch plywood cabinet designed for both ground-stacked and suspended configurations, making it flexible for touring, festival, and installed-venue deployments.
How do I control and network multiple units together?
Dual etherCON Ethernet ports allow networked control and real-time DSP adjustment across multiple units. The onboard DSP includes Array Size Compensation and FIR-based Throw Distance Correction to automatically phase-align subs in complex system topologies.
What is the frequency response and output capability?
The SRX918SF delivers a linear frequency response of 35Hz and a maximum SPL output of 134dB, with sufficient dynamic headroom to handle demanding live sound mixing without distortion or compression artifacts.
Is this suitable for small venues or home use?
No. This subwoofer is engineered specifically for touring, large-venue sound reinforcement, festivals, and installed systems. Small venues, home recording, and practice applications do not require its output capacity or complexity.
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