The concept behind the HALO-CS was to create a compact subwoofer which would add useable low frequency information both in flown and ground-stacked configurations. As such, a powerful, high excursion 15″ (381mm) neodymium drive unit was used to allow the HALO-CS to comfortably respond down to 40Hz. For larger systems, the HALO-CS can be used to add low frequency weight to the flown array with larger subwoofers providing more information in the lower octaves.

The HALO-CS enclosure is the same width as the HALO Compact, and is the equivalent height of two flown or ground-stacked HALO Compact elements. As such, flight casing and truck packing are simple tasks, as cases for HALO-CS subwoofers can easily be made the same height and width as cases with pairs of HALO Compact enclosures.

HALO-CS subwoofers are supplied with a similar rigging system to that on the HALO Compact – a four-point design made from ultra-high tensile Domex steel. HALO-CS enclosures form a stable base for ground stacks without requiring the flying grid. Location holes are provided on the rigging hardware so that the first HALO-C enclosure in the array or ground stack can have either positive or negative angle – for example in a flown configuration, the first HALO-C can be set at anything from 5° uptilt through to 10° downtilt in 1-degree increments.

The HALO-CS enclosure is constructed from premium multi-laminate Birch plywood. Intelligent bracing design minimises panel flexure, thereby reducing unwanted resonance whilst still keeping the enclosure weight low. The enclosure is also supplied as standard with rubber feet on the top (for ground stacking when inverted), matching stacking recesses in the bottom of the enclosure as well as an M20 threaded polemount adapter, and two flush routed bar handles in the sides. A perforated steel grille backed with acoustically transparent black fabric finishes the enclosure with a sleek but stylish appearance.

The enclosure is finished in a rugged black  textured polyurethane or white textured paint as standard, though RAL colour matching and weather-protected outdoor options are available.

The HALO-CS is ideally powered from the EM Acoustics DQ10 or DQ20 Advanced System Amplifiers, or the AQ-10 or AD-9 power amplifier in conjunction with the DSC48 system controller (for loudspeaker filter slopes and protection) for optimal results.

HALO-C is ideally powered from the EM Acoustics DQ10 or DQ20 Advanced System Amplifiers, or the AQ-10 power amplifier in conjunction with the DSC48 system controller (for loudspeaker filter slopes and protection) for optimum results.