JBL SRX812 12" Two-Way Bass Reflex Passive System
Description
JBL SRX812 12" Two-Way Bass Reflex Passive System
The JBL SRX812 operates as a versatile passive monitoring and playback tool, delivering responsive, articulate bass from its 12-inch woofer paired with crystalline midrange clarity from the two-way configuration. The system captures every detail in your mix—tight low-end extension, uncolored midrange reproduction, and transparent treble that keeps your mixing decisions honest and audible. This passive architecture integrates seamlessly into larger studio setups, mobile sessions, and live monitoring applications where you need reliable, gut-punching low-end authority without aggressive coloration.
Audio Performance & Coverage
The SRX812 generates a maximum SPL output of 135dB with sensitivity of 95dB at 1W/1m, ensuring articulate projection across medium to large rooms and venues. Its 41Hz–20kHz frequency range at –10dB (with –3dB response from 57Hz–20kHz) and 90 x 50 degree coverage pattern provide consistent spectral balance across the listening field while maintaining tight, controlled directivity for focused monitoring and mixing environments.
Design & Build Quality
Constructed from 18mm plywood with a rugged 14-gauge steel grille finished in durable Duraflex coating, the SRX812 handles the rigors of session work and frequent relocation between studios. The dual 36mm pole sockets and 12 M10 suspension points enable flexible mounting options for permanent installation, mobile rigs, or ground-stacked configurations, while the 50-degree monitor angle allows tilted deployment for optimal acoustic alignment in any room.
Key Features
- Passive 12" two-way bass-reflex system with 2272H woofer and 2432H tweeter
- Maximum SPL output: 135dB
- Power rating: 3200W Peak, 1600W Program, 800W Continuous
- Frequency range (-10dB): 41Hz – 20kHz
- Frequency response (-3dB): 57Hz – 20kHz
- Sensitivity: 95dB at 1W/1m
- Nominal impedance: 8 Ohm
- 1.9kHz crossover frequency for seamless driver integration
- NL4 input connector with NL4 loop-thru (+/-1 or +/-2 selectable)
- 90 x 50 degree coverage pattern
- Dual 36mm pole sockets with 12 M10 suspension points for versatile rigging
- 18mm plywood enclosure with 14-gauge steel grille and Duraflex finish
The SRX812 combines professional-grade passive architecture with studio-ready durability, making it a reliable tool for recording sessions, mixing and mastering applications, and any production environment demanding transparent midrange with authoritative low-end extension.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | Mexico |
Reviews
At a Glance
The JBL SRX812 is a passive 12-inch two-way monitor speaker suited to live-sound work and small-to-medium venue applications rather than studio tracking or mixing. Its 95dB sensitivity, 8-ohm impedance, and 57Hz–20kHz frequency response at –3dB make it a transparent reference tool for live mix engineers and touring sound operators. Studio recordists looking for accurate monitoring in a control room should consider active studio reference monitors instead.
Who This Is For
Great for
- ✓ Live Sound Reinforcement
- ✓ Touring
- ✓ Medium to Large Venues
Not the best pick for
- – Home Studio Monitoring
- – Bedroom Practice
Frequently Asked Questions
Is the SRX812 passive or powered—what amplifier do I need?
The SRX812 is a passive system rated for 3200W peak, 1600W program, and 800W continuous power handling. You'll need to pair it with an external amplifier or powered mixer capable of delivering adequate headroom for your venue size and coverage needs.
What's the frequency response and coverage pattern?
The SRX812 covers 41Hz–20kHz at –10dB (57Hz–20kHz at –3dB) with a 90 x 50 degree coverage pattern, providing tight, controlled directivity suitable for distributed live-sound systems. Sensitivity is 95dB at 1W/1m, delivering articulate projection across medium to large venues.
How is the SRX812 built for touring and transport?
The enclosure is constructed from 18mm plywood with a 14-gauge steel grille finished in durable Duraflex coating. Dual 36mm pole sockets and 12 M10 suspension points offer flexible rigging and stacking, while a 50-degree monitor angle allows tilted deployment for optimal coverage.
What input connections and impedance does it have?
The SRX812 features NL4 connectors with NL4 loop-thru capability (selectable +/-1 or +/-2) and an 8-ohm nominal impedance. The 1.9kHz crossover frequency ensures seamless integration between the 12-inch woofer and tweeter.
How does the SRX812 compare to the Electro-Voice ETX-12P or Yamaha DXR12?
The SRX812 is a passive system, whereas the ETX-12P and DXR12 are powered speakers with built-in amplification. Choose the SRX812 if you already have amplification and want flexible rigging options; choose powered alternatives if you need integrated amp-and-speaker simplicity for smaller setups.
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