High frequencies are produced by six 1" dome tweeters, configured in two vertical columns (each with three tweeters) mounted on a manifold that feeds a single slot in the centre of the horn, highly effective in controlling vertical dispersion. Flanking the HF section, dual 6" cone woofers handle the MF range, also loading on to the horn, with minimal space between the MF and HF components enhancing coherency and improving overall off-axis response.
The LF section features EAW's proprietary Phase Aligned approach, first deployed in KF730 Series line arrays. Both 6" LF drivers are positioned in a side-mounted "figure-8" configuration that extends horizontal pattern control while directing more acoustical energy on axis. The response of the MF drivers is also extended down to 100Hz, furthering low-end presence and impact.
The onboard self-powering technology includes three individual modified 500W Class-D (digital) amplifier modules, each tailored for its respective subsection (LF, LF/MF, and HF - all 4-ohm loads). Each amplifier module is accompanied by its own precisely matched digital signal processor. Headlining the DSP is EAW's Gunness Focusing alignment and driver processing algorithms that produce horn-loaded performance comparable to premium direct-radiating studio monitors.
The rigging design also allows individual components and even entire modules to be replaced within built array structures, whether flown or stacked. Two plug connectors that directly connect the amplifier module to the PCB inside of the cabinet ensure a solid, lock-tight fit and eliminate the hassles of cable connections. NTL720 cabinets are finished with EAW's durable RoadCoat weather-resistant textured finish that is highly scratch-resistant, and the grille is durable aluminium.
(Jim Evans)
