Several manufacturers have developed dedicated “amplifier-controllers” matched to their loudspeakers. For example, L-Acoustics LA4 and LA8 processor amplifiers perform similar functions for the company’s coaxial and line array systems, with the LA Network Manager allowing remote full-system control from a computer, AMX or Crestron panel.
For the Ci-Series coaxial installation systems, d&b audiotechnik offers the D6 and D12 amplifiers that provide remote control and monitoring, analog and digital inputs, loudspeaker-specific configurations, and user-configurable delay and EQ. (The D12 also powers their J-Series line arrays.)
The NEXO concept of STM (Scale Through Modularity) provides exceptional versatility, enabling the design a wide range of systems from four core loudspeaker modules (main, bass, sub, and omni) that can be flown or stacked one-, two-, or three-wide. These can be integrated with the NEXAMP power/control package for further optimization.
Recently, Renkus-Heinz unveiled VARIA, a modular approach that enables cabinets to be configured as flown vertical arrays, horizontal arrays, or ground stacked systems. With a range of vertical and horizontal dispersion angles and proprietary transitional waveguide technology, the result is a set of highly configurable enclosures, and again, it can be further tailored with digital amplification with integrated RHAON (Renkus-Heinz Audio Operation Network) electronics.
Renkus-Heinz has also been a leader in more compact solutions offering digital steering of output, found in models such as Iconyx and IC Live with a column profile. In essence, multiple sonic beams can be independently aimed and contoured using the software-controlled DSP.
Tannoy is also noted for its work in this regard, exemplified by QFlex beam-steering loudspeakers that offer precise control directivity in the vertical axis, resulting in optimal coverage and high direct-to-reverberant ratio. Another example is the Community Professional ENTASYS single-enclosure arrays with HF vertical coverage adjustable between 6 and 12 degrees, and HF ribbon-emulation.
Civic Theatre, New Orleans
Now let’s turn attention to some recent applications, starting with a project at the Civic Theatre. Following a 9-month, $10.5-million renovation project the oldest surviving theatre building in New Orleans has officially reopened its doors after sitting dormant for more than three decades. Solomon Group of New Orleans conceived the new system to bring modern production standards to the 107-year-old, 1,150-capacity performance venue.
The new house sound system is headed by 11 L-Acoustics KIVA enclosures flown beneath three KILO low-frequency extension cabinets per side, all custom-finished in white to match the room’s bright Beaux Arts-style interior. Ground-stacked below each array are two SB18 subs topped with a single coaxial 8XT enclosure for fill. The entire system is powered and processed by four amplified controllers, three LA8 and one LA4.
“L-Acoustics KIVA-KILO was one of the very few systems that could accommodate the Civic’s rigging weight limits yet still provide the broad vertical splay that the room’s geometry required,” says Solomon Group partner Stephen Fink. “Beyond that, the stunning presence of these compact white arrays on either side of the stage perfectly complements the visual aesthetic of the venue. They almost look like part of the architecture, as if they were made specifically for the space. KIVA-KILO was the best fit for the Civic physically, sonically and financially.”