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 JRX112M Features :
- JBL 12 inch low frequency driver with a 64 mm (2.5 in) diameter edgewound ribbon voice coil which provides more cross-sectional wire area in the voice coil gap than round wire designs, for greater efficiency and power handling.
- Ferro-fluid cooled compression driver with titanium diaphragm improves high frequency performance as well as system reliability.
- The advanced network topology crossover design shapes frequency response and delivers "coherent summation" in the crossover region.
- High-voltage capacitors and inductors with massive cores and heavy gauge wire enable the crossover network to handle high power without saturating.
- Progressive Transition high frequency waveguide provides superior coverage control, reduced distortion, and smoother frequency response.
- The rugged, acoustically superior enclosure is constructed from 19 mm (.75 in) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for extreme durability and improved low-frequency performance.
- SonicGuard protects the high frequency driver from excess power without interrupting the performance.
- Non-resonant, all-steel handles are used.
- Attractive 18-gauge hexagon perforated, steel grille protects components from damage.
- Dual-angle pole-mount socket allows the speaker to tilt 10˚ for more uniform audience coverage.
