Korpa 
A self-powered 15", 3-way bass-reflex system with built-in DSP that pumps out 1500W.
The PRX635's 3-way configuration was conceived, created, and tuned for accuracy and spectral balance. With a horn-loaded midrange, pattern control is maintained resulting in exceptional clarity and uniform sonic projection over the defined coverage area. This speaker is ideally suited to applications where the program material exhibits subtlety and nuance. Perfectly capable of reproducing high-fidelity, full-range sound without a subwoofer, when coupled with extended low frequencies of the PRX618S-XLF (sold separately), one experiences complete control over the entire audio spectrum. These cabinets can be stand-mounted but do require a large footprint tripod type stand. When polemounting the PRX635 on a subwoofer we highly recommend a pole no longer than 24" to ensure stability and safety.
As with all the full-range PRX600 Series systems, two EQ selections can be used to optimize the system for the program material and/or environment. The input section also accommodates either Line or Mic/Instrument level inputs. The PRX635 is a self-powered, lightweight three-way loudspeaker system capable of delivering a very high level of performance, both in SPL and sonic accuracy.
The PRX635 is a self-powered, lightweight three-way loudspeaker system capable of delivering a very high level of performance over a broad bandwidth. The PRX635 is comprised of one 380mm (15") 265F-1 Differential Drive woofer, a 165mm (6.5") 195H horn-loaded 90° by 50° mid-range and a 2414H 25.4mm (1") annular polymer diaphragm, neodymium compression driver mounted to a 90° by 50° horn, all driven by a 1500W (3 x 500) Audio Class-D power amplifier. A proprietary DSP chip is at the core of a fully featured input section, providing user selectable system EQ, protection, input sensitivity selection, cross-over functionality, dynamic limiting, and discrete component optimization.
The amplifier input panel offers XLR or 1⁄4" jack compatibility and a sensitivity switch provides extra flexibility, making it possible to connect literally any sound source without using a mixer. Signal present and overload lights indicate the system status and assist in setting the optimum level, via the level control knob.
All PRX600 cabinets are built from a combination of 25mm (on the top and bottom for added rigidity) and 18mm, strong, lightweight poplar plywood made structurally sound with tongue and groove joints. All PRX600 Series cabinets are protected by JBL's tour proven DuraFlex finish. Grilles are made from dent-resistant 16-gauge steel and handles are made from lightweight, glass-filled nylon for added strength and durability. All M10 suspension points are constructed from 14-gauge steel and have been tested with a yield-strength of 1000 pounds each.
