hd ML24Beam

El hd ML24Beam está equipado con 24 altavoces blindados de banda ancha de 2″, cada uno con amplificadores de 75 W y DSP de última generación.

The hd ML24Beam is equipped with 24 shielded 2″ broadband speakers, each with 75 W amplifiers and the latest DSP generation.

Descripción

Ofrece un gran potencial para mejorar la distribución del sonido en arquitecturas complejas y salas fuertemente reverberantes. El objetivo es enfocar el sonido solo en las superficies auditivas, mientras que las superficies que causan reflejos no deseados y producen un sonido difuso perturbador se sombrean. Esto conduce a una inteligibilidad del habla mucho mejor y una experiencia auditiva de primera clase para cada oyente, permite un posicionamiento discreto de los altavoces en posiciones previamente inapropiadas, así como una adaptación flexible de las características de radiación del altavoz a diferentes aplicaciones.


El verdadero diseño unidireccional del hd ML24Beam elimina la interferencia en el importante rango de frecuencias de rango medio porque no hay sombra de los altavoces superiores y ninguna red de cruce afecta negativamente a la radiación, lo que permite una implementación limpia de algoritmos de formación de haces. El resultado es una radiación horizontal extremadamente homogénea de 100° y una excelente calidad de sonido para voz y música, dinámica extendida.

La unidad electrónica especialmente desarrollada cuenta con un DSP de alto rendimiento, que explota todas las posibilidades del procesamiento de señales moderno para realizar extensos algoritmos de formación de haces. Usando el software intuitivo hd LevelZ, el campo de sonido se puede simular y optimizar para lograr el mejor resultado posible. El ancho ultracompacto de 80 mm convierte al hd ML24Beam en el altavoz de formación de haces más estrecho del mercado, casi invisible en instalaciones fijas. La unidad electrónica está integrada en la carcasa del altavoz y está protegida de manera óptima por la rejilla de diseño de estructura fina continua con espuma acústica trasera y garantiza una integración discreta en la arquitectura de cualquier habitación. El riel de metal continuo en la parte posterior del perfil de aluminio permite el uso de tuercas cuadradas M6 para conectar un adaptador de montaje en pared o el uso del adaptador de trípode para aplicaciones móviles. Las roscas M6 en la parte superior e inferior permiten el montaje en la pared con soportes de montaje en L en el mínimo espacio requerido.

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It offers great potential for improving the sound distribution in complex architectures and strongly reverberant rooms. The goal is to focus the sound only on auditory surfaces, while surfaces that cause unwanted reflections and produce disturbing diffuse sound to be shaded. This leads to a much better speech intelligibility and a first-class listening experience for every listener, allows an inconspicuous positioning of the speakers in previously inappropriate positions, as well as a flexible adaptation of the speaker radiation characteristics to different applications.

The hd ML24Beam’s true 1-way design eliminates interference in the important mid-range frequency range because there is no shadow from superior speakers, and no crossover network adversely affects the radiation, enabling clean implementation of beamforming algorithms. The result is an extremely homogeneous horizontal radiation of 100° and outstanding sound quality for speech and music, extended dynamics.

The specially developed electronic unit features a high-performance DSP, which exploits all possibilities of modern signal processing to realize extensive beamforming algorithms. Using the intuitive software hd LevelZ, the sound field can be simulated and optimized to achieve the best possible result. The ultra-compact 80mm width makes the hd ML24Beam the narrowest beamforming speaker on the market, almost invisible in fixed installations. The electronic unit is integrated into the housing of the loudspeaker and is optimally protected by the continuous fine-structured design grid with backed acoustic foam and ensures an unobtrusive integration into any room architecture. The continuous metal rail on the back of the aluminum profile allows the use of M6 square nuts for attaching a wall mount adapter or the use of the tripod adapter for mobile applications. M6 threads on the top and bottom allow wall mounting with L mounting brackets in the smallest space requirement.

Beamforming Stick

  • active LineArray Stick with 24x 2″, 24x 75W Class-D
  • up to 3 main beams, independently controllable
  • complex hd Beamforming technology
  • beam title angle ±60°
  • beam opening angle 0° – 90°
  • SPLmax 125 dB (1 m)
  • uniform horizontal coverage of 100°
  • suitable for music – not just speech

Harmonic Design Beamforming loudspeakers offer great potential for improving sound distribution in complex architectures and highly reverberant rooms. The goal is to focus the sound only on auditory surfaces, while surfaces that cause unwanted reflections and produce disturbing diffuse sound to be shaded. This leads to a much better speech intelligibility and a first-class listening experience for every listener, allows an inconspicuous positioning of the speakers in previously inappropriate positions, as well as a flexible adaptation of the speaker radiation characteristics to different applications.

Compact Design.

The ultra-compact width of just 80 mm makes the hd ML-Series the narrowest beamforming speaker available, which is almost invisible in permanent installations. The elegantly designed aluminum enclosure and the finely woven steel grille with premium powder coating seamlessly integrate the sleek, unobtrusive look of the column speakers into the room architecture, inspiring planners, architects, system integrators, event organizers and the audience.

Genuine 1-Way Design.

For excellent and linear reproduction of a sound event from the lowest to the highest audible frequency, conventional loudspeakers must use different types of drivers to reproduce the entire frequency range. The result is incoherence and phase shifts in the middle frequency range due to different membrane mass, varying transient response and decay time speakers of different sizes have. The hd column loudspeakers of the hd ML- and PL-Series are exclusively equipped with full-range loudspeakers and thus trouble-free in the important mid-frequency range, as each loudspeaker has the same response and characteristics. The result is excellent sound quality for speech and music, improved dynamics and consistent horizontal coverage of the listening areas.

Cost Efficient.

With our Beamforming technology, we offer a completely new price-performance ratio. This allows the use of the technology for projects that would require influencing the sound beams, but have so far exceeded the budget. Our own in-house developed and manufactured components, algorithms and the planning software guarantee cost efficiency.

Scalable and Customizable.

The modular concept of the hd ML-Series continues in the Beam-Series. Up to 32 DSP/amplifier channels, scalable in segments of 8, individual length and RAL colors, seamlessly integrate the speaker into the architecture – not the other way around. The standard colors are black (RAL 9005) and white (RAL 9010) without surcharge. The continuous U-slot on the back of the aluminum profile allows the use of M6 square nuts to attach a wall mount adapter or the use of the hd mounting adapter for quick and easy mounting of the tilt and swivel stand adapter for mobile applications. M6 threads on the top and bottom allow wall mounting with L mounting brackets in the smallest space requirement. The electronic unit is integrated into the housing of the loudspeaker and is optimally protected by the continuous fine-structured design grid with backed acoustic foam and ensures an unobtrusive integration into any room architecture.

Dante Spoken here.

The Harmonic Design Beamforming loudspeaker are prepared for digital audio transmission with Danteaudio streams from e.g. mixers or Matrix systems This allows digital streaming of audio packets over a Dante network directly and without additional DA/AD conversion to the integrated DSP core and amplifiers. A software-controlled redundant input selector switch for the analogue secondary input ensures fail-safety if required. If no digital transmission is required, both analog inputs (primary and secondary) can be used to create an analog fallback strategy.

Way-Beyond Spatial Aliasing.

The selection of 2” full-range chassis enables the shifting of the inevitable spatial aliasing from linear loudspeaker arrays to the highest frequencies. Due to the increasing directivity of the speakers, this phenomenon is also suppressed. The motivation to keep the speaker diameter to a minimum has increased the challenges for our research and development department in terms of the size of multi-channel amplifiers and DSP platforms, but it was a necessary step to ensure the musicality of the beam-formed speaker array.

Multi-Channel DSP Architecture.

Based on the enormous computing power of our hd MultiDSP, a new multi-channel DSP architecture has been developed that meets the high demands of beamforming algorithms. Each of the up to 32 output channels as well as user channel features a 384 Taps FIR filter and 16x IIR filters in double precision. The all-new hd BeamDSP performs over 300 million instructions per second to meet real-time criteria and provide enough freedom to shape the sound as needed.

Powerful Amplifiers.

Each loudspeaker chassis is equipped with a DSP channel and a digitally interfaced and microprocessor controlled stateof- the-art Class-D amplifier. This guarantees best SNR for all gain settings and the possibility to surveil the impedance of each chassis and report its status in case of any fault. Each amplifier channel can deliver up to 75 watts into 4 Ω loads, delivering uncompromising audio with premium dynamics and headroom.

DSP Electronic Features

  • 2In/24Out High-End hd BeamDSP with more than 300 MIPS
  • redundant input section with fallback algorithm
  • analog + digital inputs with Dante (optional)
  • AdvancedDirectivityOptimization Algorithmus
  • AdvancedRoomOptimization Algorithmus
  • 384 Taps FIR filter per input/output
  • 16x IIR filter (double precision) per input/output
  • 75W Class-D amplifiers with digital input for best SNR
  • ImpedanceControl with fault detection
  • multistage limiter architecture (Peak/RMS/Thermal)
  • hd LevelZ Software via USB

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Reliable Prediction.

To adapt the beamforming loudspeaker to the specific venue it´s necessary to perform a simulation and tweak the beam parameters. Therefore a complete simulation tool has been integrated into the remote software hd LevelZ. Set the audience parameters like height, depth and listening height of the venue and place the speaker at the desired position with optional mechanical tilt angle. Lastly, give a rough estimate of the beam parameters and start to evaluate the 2D Beam-Plot and SPL over distance plot at various frequencies until the final settings have been derived.

Beam Steering.

Beam steering is the basic discipline of beam forming where the main lobe is digitally steered up- or downwards. Harmonic Design Beamforming loudspeakers are capable to adjust the vertically main lobe beam angle up to ± 60° with an accuracy of 0.1°/step.

main beam @ 0°

main beam @ +10°

main beam @ -32°

Frequency Independent Opening Angle.

Conventional loudspeaker arrays increase their directivity with increasing frequency resulting in a wide main lobe at low frequencies and a narrow main lobe at high frequencies. A frequency independent opening angle preserves the same opening angle over a great bandwidth within physical limitations and is adjustable from minimum to 90° in 0.1° steps. This guarantees perfect concentration of sound where it belongs and where not.

f = 800 Hz, conventional

f = 2 kHz, conventional

f = 4 kHz, conventional

f = 800 Hz, frequency independent

f = 2 kHz, frequency independent

f = 4 kHz, frequency independent

Multiple Beams.

The unique Harmonic Design Algorithm enables up to 4 separate main beams that can be steered individually and still create a specific frequency independent opening angle.

main beam @ 0°

2 beams @ +5°|-20°

3 beams @ +20°|-2°|-20°

4 beams @ 35°|+12°|-12°|-35°

AdvancedDirectivityOptimization.

The conventional beam radiation pattern also contains unwanted side lobes that excite the auditorium with disturbing noise while declining the speech intelligibility. By applying special algorithms to the individual DSP channels, an almost optimum, light-beam-like main lobe beam is achievable with an accurate side lobe suppression. The enhancements to improve speech intelligibility in reverberant rooms by applying ADO algorithm are extreme. The strength of the optimization tool may be adjusted by the end-user either towards maximum SPL or optimum target directivity.

conventional beam pattern, ADO off

intermediate ADO

maximum ADO

Focus.

By default the focus point of the wave fronts of the individual loudspeakers is infinity and creates parallel running pressure waves. At the distance infinity all wave fronts are perfectly correlated and coherent meaning they arrive at the same time with the same relative phase. Whenever this large throw is not necessary it may be useful to focus the wave fronts to the front rows in steps of 0.1m to tighten the „sweet spot“ .

Model hd ML24Beam
Principle cylindrical wave, active beamforming speaker
Transducers 24x 2″ shielded fullrange chassis
Crossover active at 110 Hz
Amplifier 24x 75W, Class-D, digital controlled
Frequency range 110 Hz – 20 kHz
Max. beam count 3
Max. sound pressure (1 m) 125 dB
Coverage nominal horizontal 100°
Vertical beam tilt angle ± 60°, in 0.1° increments
Vertical beam opening angle 0° – 90°, in 0.1° increments
Features AdvancedDirectivityOptimization
AdvancedRoomOptimization
redundant input section with 2x analog inputs and fallback algorithm
Connection Phoenix 3-pole mains
Phoenix 6-pole audio input
Dante Ethernet (optional)
USB
Dimensions (W x H x D) 80 x 2410 x 78 mm
Weight 12 kg
Enclosure Powder-coated aluminium profile black (RAL 9005) or white (RAL 9010)
Steel grille with acoustic foam
2x M6 threads in top/bottom plate
rear connection panel
Options Dante
multiple wall mount
tripod adapter
RAL color
special length

 

Información adicional

Peso 1 kg
Dimensiones 100 × 30 cm

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