Description
EM Acoustics HALO-C Compact Passive Line Array Element
HALO-C is a development from the original HALO system, keeping the same breathtaking sonic performance that the original HALO system was known for. HALO-C is a truly compact solution – yet as it is capable of continuous sound pressure levels in excess of 120dB it is an ideal solution for small-to-medium theatres, houses of worship, conference & corporate A/V and even small to medium scale live sound reinforcement.
HALO-C contains a 197mm (7.8″) AMT high frequency drive unit on a bespoke waveguide, linked via a signature EM Acoustics passive crossover to a high power neodymium 8″ (203mm) LF drive unit. Exact drive unit placement, coupled with the crossover topology and waveguide design extends the horizontal coverage pattern to below 1kHz. The true plane wave output of the AMT drive unit and waveguide combination yields a precise, well-behaved vertical pattern allowing seamless array integration and minimising destructive interference between adjacent elements.
The HALO Compact enclosure is constructed from premium multi-laminate birch plywood, and is only 492mm (19.4″) wide and 17kg (37.4lbs) in weight. Intelligent bracing design minimises panel flexure, thereby reducing unwanted resonance whilst still keeping the enclosure weight low. The design of the rigging hardware is flexible for use in both flown and ground stacked configurations, and allows arrays of up to 24 elements to be assembled whilst retaining a 10:1 safety factor.
A perforated steel grille backed with acoustically transparent black fabric finishes the enclosure with a sleek but stylish appearance. Two NL4 connections are provided on the rear for input and enclosure link. The enclosure is finished in black or white textured paint as standard, however weather-protection options as well as custom RAL code colours are also available.
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.
HALO-C contains a 197mm (7.8″) AMT high frequency drive unit on a bespoke waveguide, linked via a signature EM Acoustics passive crossover to a high power neodymium 8″ (203mm) LF drive unit. Exact drive unit placement, coupled with the crossover topology and waveguide design extends the horizontal coverage pattern to below 1kHz. The true plane wave output of the AMT drive unit and waveguide combination yields a precise, well-behaved vertical pattern allowing seamless array integration and minimising destructive interference between adjacent elements.
The HALO Compact enclosure is constructed from premium multi-laminate birch plywood, and is only 492mm (19.4″) wide and 17kg (37.4lbs) in weight. Intelligent bracing design minimises panel flexure, thereby reducing unwanted resonance whilst still keeping the enclosure weight low. The design of the rigging hardware is flexible for use in both flown and ground stacked configurations, and allows arrays of up to 24 elements to be assembled whilst retaining a 10:1 safety factor.
A perforated steel grille backed with acoustically transparent black fabric finishes the enclosure with a sleek but stylish appearance. The enclosure is finished in black or white textured paint as standard, however weather-protection options as well as custom RAL code colours are also available.
HALO-C is ideally powered from the AQ-10 four-channel switchmode power amplifier, and requires a DSP system processor for array compensation as different numbers of elements are used in the system.
| Enclosure Type | Two-way passive compact line array element |
| Components | 1 x 8” (203mm) neodymium LF drive unit 1 x 7.8” (197mm) neodymium AMT HF drive unit |
| Dimensions (HxWxD), mm/(ins) | 216 (8.5) x 492 (19.4) x 400 (15.7) mm/(ins) – enclosure only 252 (9.9) x 524 (20.6) x 400 (15.7) mm/(ins) – extremities of rigging/pins |
| Net/Shipping Weight | 17/19kg (37.4/41.8lbs) |
| Frequency Response | 75Hz – 20kHz ± 3dB |
| Nominal Dispersion | 95° horizontal, vertical dependant on array configuration |
| Maximum SPL | 124dB continuous, 130dB peak |
| Power Handling | 325W RMS, 650W program |
| Nominal Impedance | 8 ohms |
| Crossover | Asymmetric internal passive |
| Rigging Hardware | Four-point integral flying system, tested to 24 elements at 10:1 safety factor secured with aircraft-grade ball-lock pins splay angles 0, 0.5, 1, 1.5 and 2-15° in 1° increments direct interface to HALO-CS enclosures either flown or ground stacked |
| Accessories | CASE-HALO-C four element touring flightcase various flying hardware options – see flying hardware datasheet |
