The LOW-down :
We’ve all heard shows where the sound was plenty loud and the music was kicking but there just wasn’t any energy. Could be that the problem was inadequate bass. If your goal is to get the crowd out on the dance floor, there’s no better way to do it than with plenty of tight, punchy, powerful bass. And there’s no better way to get bass than with a JBL subwoofer. The JRX100 line gives you two ways to get the JBL subs you need. If you prefer the simplicity and convenience of a powered subwoofer, choose the JRX118SP. Or if you’d rather have the flexibility of an externally powered rig, go with the JRX118S. Either way you’re going to get the performance of a cast-frame, 18“ woofer built by JBL.
The JBL 100 Hour Torture Test!
Put on a set of industrial hearing protectors, step through three sound proof doors and you’re in the JBL Power Test room. All JBL Professional speaker designs, including JRX100, come here for a brutal 100 hour torture test. When we specify a speaker as having 250 watts continuous power capacity, that means samples have survived a 100 hour test with IEC noise at 250 watts. And that’s 250 watts average – the signal we use actually has 6 dB (1000 watt) peaks. If the systems don’t pass, we change the design and start the tests again. No one in the industry uses a more demanding standard.
Hardware :
JRX100 Series doesn’t scrimp on the hardware either. All the JRX models use tough, non-resonant all-steel handles with big, beefy bars. And the entire baffle (not just the woofer) is protected by an 18 gauge steel grille.
Enclosure Construction :
Competitive systems typically use particleboard construction and rely entirely on glue to hold it together. For JRX100, we selected a more rugged and acoustically superior 3/4” MDF material for the enclosures. And to make sure they stay together, we constructed them with advanced adhesives and closely spaced mechanical fasteners. Not only are the cabinets rugged, but the denser enclosure walls are more rigid, delivering better low end as a result.
JBL Drivers :
All woofers and compression drivers used in JRX100 are manufactured in Northridge, California by JBL Professional.
Progressive Transition Waveguide :
Just one example of JBL’s innovation is the PT™ Waveguide design. For decades, horn designers were faced with trade-offs between well controlled coverage, low-distortion, and good frequency response. JBL developed proprietary algorithms which give our PT Waveguides the best performance in all three areas.
SonicGuard™ :
Feedback, dropped microphones, pushing the amps into clipping – all these things can quickly destroy even the best high-frequency drivers. That’s why JBL JRX100 speakers include SonicGuard™ protection. SonicGuard circuitry absorbs excess energy without interrupting the performance. No circuit breakers to reset, no fuses to replace, and no “poly-switches” to degrade sound quality.
JBL JRX118s Features :
- 18 inch compact subwoofer.
- 350 W (continuous), 1400 W (peak) power capacity.
- The rugged enclosure is constructed from 19 mm (.75 in) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for durability and improved low-frequency performance. The enclosure is covered in black carpet.
- A top mounted, cast aluminum 35 mm pole mount receptacle can receive an optional SS3BK pole to facilitate use of the JRX118SP as a base for a midhigh speaker cabinet.
- Non-resonant, all steel handles are used.
- Attractive 18-gauge perforated steel grille protects components from damage.
- 35 mm pole mount receptacle for use with satellite speakers.
