JBL SRX828S 18" Dual Passive Subwoofer System
Description
JBL SRX828S 18" Dual Passive Subwoofer System
The SRX828S is built for musicians and sound engineers who demand serious low-end authority without losing control. Dual 18-inch woofers deliver tight, defined bass that sits behind your mix with surgical precision—every kick drum and bass note cuts through with clarity rather than murky bloom. This passive design integrates seamlessly into existing PA setups, giving you a grounded bottom end that locks everything in place without compromising midrange or high-end articulation.
Audio Performance
Maximum SPL reaches 141 dB, with frequency response extending from 47Hz to 120Hz (–3 dB) and an 80Hz crossover frequency. The system handles 4800W peak, 2400W program, and 1200W continuous power, delivering the visceral, felt experience that transforms performance from good to unforgettable across hip-hop, electronic, rock, and live sound reinforcement applications.
Build & Integration
Constructed from 18mm plywood with Obsidian Duraflex™ finish and reinforced by a 14-gauge perforated steel grille, the cabinet weighs 137 lbs and features eight handles for transport and positioning. Indexing feet allow stacking in both standard and cardioid positions, while NL4 connectors with loop-thru capability and an M20 threaded pole cup ensure flexible deployment in any configuration.
Key Features
- Passive dual 18" subwoofer system with 2x 2279H LF drivers
- Dual ferrite drivers with 3-inch voice coils
- Maximum SPL: 141 dB
- Frequency Range (–10 dB): 30Hz – 150Hz
- Frequency Response (–3 dB): 47Hz – 120Hz
- 80Hz crossover frequency
- Power Rating: 4800W Peak / 2400W Program / 1200W Continuous
- Nominal Impedance: 4 Ohm
- NL4 Input with NL4 Loop-thru (+/–1 or +/–2 Selectable)
- 18mm plywood enclosure with Obsidian Duraflex™ finish
- Indexing feet for stacking in standard and cardioid positions
- M20 threaded pole cup for mounting; eight handles; dimensions 26.79" × 47.42" × 22.57"; weight 137.0 lbs
The SRX828S provides the controlled, articulate bass foundation that anchors your entire mix with professional authority, whether you're pushing subs at a festival or reinforcing a live band in a packed room.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | Mexico |
Reviews
At a Glance
The JBL SRX828S is a dual 18-inch passive subwoofer built for live sound reinforcement, electronic music, hip-hop, and rock—delivering 141 dB SPL with surgical precision and zero mud. Dual ferrite drivers with tight, articulate bass definition let you feel every kick and low note with clarity rather than rumble, making it essential for festival rigs, touring bands, and venues demanding earth-shaking authority without losing mix control. Rugged plywood construction, cardioid stacking capability, and flexible NL4 connectivity ensure reliable deployment night after night across any stage size.
Who This Is For
Great for
- ✓ Live Sound Reinforcement
- ✓ Electronic Music
- ✓ Hip-Hop
- ✓ Rock
- ✓ Festival PA Systems
Not the best pick for
- – Acoustic Music
- – Classical
- – Intimate Venues
Frequently Asked Questions
What is the actual frequency range of the SRX828S?
Frequency response at –3 dB is 47Hz to 120Hz, with an extended range to 30Hz–150Hz at –10 dB. The 80Hz crossover frequency is optimized for clean integration with midrange PA tops.
How much power does this subwoofer need?
The SRX828S is rated for 4800W peak, 2400W program, and 1200W continuous power. You'll need an external powered subwoofer controller or amplifier rated to deliver these levels into a 4-ohm nominal impedance.
Can I stack multiple SRX828S cabinets, and how?
Yes. Indexing feet allow stacking in both standard and cardioid positions, which increases output and tightens pattern control in larger venues or festival applications.
What connectors and options are included for integration?
The system features NL4 input with NL4 loop-thru capability (selectable +/–1 or +/–2 modes) and an M20 threaded pole cup for flexible mounting and daisy-chaining in any rig.
How portable is the SRX828S for touring?
At 137 lbs with eight handles and rugged 18mm plywood construction with Obsidian Duraflex finish, it is built for road duty and repeated setup/breakdown across venues.
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