HARMAN’s JBL Professional bowed its STX800 Series portable loudspeakers—designed to bridge the gap between lighter-duty portable P.A. speakers and full-size touring sound systems—at the 2012 ProLight+Sound Expo in Frankfurt, Germany. The six STX800 passive loudspeaker models promise exceptional sound quality combined with rugged, travel-friendly construction, extreme power handling capability and integration with Crown’s VRack amplifier V5 level processing and HARMAN JBL HiQnet Performance Manager software.
The JBL STX800 Series models include the 12-inch, 2-way STX812M; the 15-inch, 2-way STX815M; the dual 15-inch, 2-way STX825; the dual 15-inch, slot-loaded 3-way STX835; the 18-inch STX818S subwoofer; and the dual 18-inch STX828S subwoofer.
JBL STX800 Series loudspeakers use proprietary JBL high-power-handling drivers offering extremely low distortion and precision waveguides for accurate pattern control. STX800 Series enclosures are designed for easy handling and durability, and are sized to be truck-pack friendly, allowing for the maximum usage of cargo space, which lowers transportation costs and reduces their carbon footprint.
The STX812M and STX815M can be used either as a floor monitor, on a tripod stand or over a subwoofer. Both feature a 70×70-degree waveguide for precise, focused coverage. The STX825 is said to have a wide frequency range and a 90×50-degree coverage angle, which is ideal for bands or DJs as a primary P.A., as a side-fill speaker on a concert stage, or as an installed speaker in a dance club or performance venue.
JBL’s slot-loaded STX835 is intended for full-range use in stand-alone applications or in high-performance environments as a ground stack passive top box. The STX835 is designed to be placed over the STX828 subwoofer, and its horn-loaded midrange and high-frequency 60×40-degree waveguides allow two STX835s to be splayed for wide-angle coverage over a large area. All STX800 loudspeakers can be operated either full-range or bi-amplified.
Though compact, the STX818S subwoofer can deliver 1,000 watts of continuous pink noise power-handling and comes equipped with a top-mounted M20 pole mount. For applications requiring pronounced bass frequencies, the STX828S’s dual 18-inch drivers handle 2,000 watts of continuous pink noise, 4kW program and 8kW peak.
STX800 Series loudspeakers employ the company’s most advanced technologies, including JBL’s patented CMCD Cone Midrange Compression Driver, which provides ultra-low midrange distortion, increased sensitivity, extended bandwidth and improved phase coherence. High frequencies are handled by either a 2432H 3-inch or 2453H 4-inch titanium-diaphragm, neodymium-magnet compression driver, operating in conjunction with JBL’s patented Progressive Transition (PT) waveguides, which offer constant directivity and smooth frequency response over a wide area. STX800 Series woofers feature the latest evolution of JBL’s Vented Gap Cooling: Super Vented Gap Technology, which provides more efficient heat dissipation for higher power-handling capability with minimal dynamic compression.
All models of JBL STX800 Series loudspeakers (except the subwoofers) incorporate M10 suspension points. Optional wheel kits are available for the STX818S and STX828S subwoofers. STX800 Series models are made from top-quality birch/poplar plywood covered in JBL’s resilient DuraFlex material, and have road-tough 14-gauge steel grilles lined with acoustically transparent cloth