Primare SPA 22

Primare SPA 22

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El nuevo SPA22 combina la avanzada flexibilidad de control y la topología actualizable del SP32 con cinco canales de amplificación a 120W cada uno. Los amplificadores son de un nuevo diseño de clase D, UFPD (Ultra Fast Power Device), que proporciona una dinámica calidad de sonido en todo el espectro audible conservando una magnífica eficiencia con ahorro de energía. El nuevo diseño modular del SPA22 permite actualizar con facilidad el DSP, la imagen y las conexiones con tarjetas de marca registrada Primare, que incorporan versiones optimizadas de las últimas tecnologías. Esto hace del SPA22 una plataforma idónea para el sonido surround y el procesado de vídeo para muchos años. Casi cualquier parámetro puede ser personificado: cualquier entrada puede ser asignada a un nombre y asociada con cualquier fuente de audio y vídeo. Podrá definir para cada entrada el formato surround, la activación de triggers y su sensibilidad. Podrá configurar para cada uno de los principales formatos surround el volumen, los tipos de cajas acústicas, las frecuencias de corte y los retardos, incluso el control de graves. El SPA22 ofrece tres entradas HDMI v1.3 conmutables y una sola salida HDMI para audio y vídeo; incorpora una función de procesado y bypass de audio personalizable. La capacidad HDMI v1.3 es importante ya que permite transmitir audio PCM multicanal sin comprimir de un reproductor Blu-Ray a los DACs del SPA22 y a los amplificadores y cajas acústicas. Esto significa que, mientras perfeccionamos la tarjeta de audio HD Primare, el SPA 22 puede procesar audio HD en su máxima resolución. Además del HDMI, dispone de ocho pares de entradas no balanceadas de audio analógico y siete entradas de audio digital (AES/EBU incluido). Cualquier entrada de audio puede ser asignada para cualquiera de las 3 entradas de vídeo por componentes, 3 de S-Video y 4 de vídeo compuesto para salir simultáneamente a las salidas de vídeo analógicas de componentes, S-Video y vídeo compuesto. Las entradas de audio analógicas 7.1 también se pueden emplear para la conexión de reproductores DVD-A/ SACD. Las salidas de audio preamplificadas no balanceadas (FL, FR, C, SUB, SR, SL, SBL, SBR) permiten la conexión a cualquier tipo de etapa de potencia. Ofrecemos 3 triggers de 12V, así como entradas IR y RS232. Características - Arquitectura de diseño modular - 1080p HDMI conmutable. Componentes/ Compuesto/ S-Vídeo - 5 x 120W (todos los canales simultáneamente) - Compatible con PCM Multicanal - Dolby Digital, Prologic IIX, EX7.1, dts, dts-ES 6.1, Neo6 - Entrada DVD-A & SACD 7.1 - Control de graves configurable - Control IR & Full RS232 - Triggers programables - Disponible en negro o titanio The SPA22 is a 5x120W integrated A/V amplifier and digital controller and is the natural successor to the award-winning SPA21, which was recognised around the world for its ease of use and ‘hi-fi’ sound quality. As the first of a new generation of Primare home entertainment products however, the SPA22 represents a considerable evolutionary advance in terms of design, performance, user flexibility and versatility. MODULAR DESIGN The SPA22’s comprehensively shielded heavy-duty steel chassis houses a newly developed modular design that allows for DSP, video and connections to be upgraded easily with proprietary Primare boards, incorporating thoroughly evaluated and optimised versions of the latest technologies and connectors. This makes the SPA22 an ideal surround and video processing platform for many years to come. In every instance we have taken special care to keep signal paths short and layouts uncomplicated. Together with high performance FFC-wiring, these techniques give the unit an extremely high performance and the highest possible signal-to-noise ratio. The finest audio grade semiconductors and capacitors have been used whenever possible. All parts that are known to interfere with each other are isolated by shielding, dedicated signal paths and power supplies. Ultra Fast Power Device (UFPD) Class D AMPLIFICATION Switch mode power electronics is an important technology for reducing energy consumption and also to meet the demands for more channels in smaller enclosures. Unfortunately Class D amplifiers and switch mode power supplies have a deserved reputation for poor audio quality. The reason is that it is very difficult to apply enough feedback to control high frequency distortion while retaining stability in the Class D circuit. The culprit is the demodulation filter on the output, which shifts the phase 180 degrees. At low frequencies where the phase margin is large the application of enormous amounts of feedback creates fantastic THD figures, but at higher frequencies THD increases fast. While the sound quality of such an amplifier is usually very dynamic and vivid, it can sound tiring and uncontrolled in the long run, especially when driving complex loads such as multi-way speakers. The worst examples have 0.001% THD at 1kHz and 0.1% THD at 7kHz and i.e. 100 times more THD at 7kHz. Female voices can sound harsh and metallic, percussion like breaking glass. Primare is now introducing a Class D technology called UFPD (Ultra Fast Power Device) which for the first time provides for the possibilities of an ‘audiophile’ Class D design. It is a Class D technology which has 30dB constant loop gain in the entire audio range and beyond the filter resonance frequency. It treats all signals equally regardless of frequency or slew rate and has the ability to suppress the filter resonance entirely. Consequently THD is kept very low at all frequencies. Irrespective of load, the frequency response is the same therefore UFPD is able to drive any speaker while maintaining control and vividness. Although switch mode power supplies have gained a reputation for noise and unreliability, the theoretical advantages of the design are well known. The rails can be regulated with precision and current demand from the mains is lower as the result of high efficiency and the absence of current spikes: energy is taken from the mains over a larger period of the sine wave. In conjunction with UFPD, Primare uses an isolated PFC (Power Factor Control) technology in the power supply, which controls the current from the mains voltage so that it is a pure sine wave with the same frequency and phase as the mains voltage. This means that even if 1000W is taken from the mains, other equipment in the room will not be affected. Its presence becomes virtually invisible to the mains voltage! The isolating stage of the converter works in a ZVS mode and as a result, the switch flanks contain a lower quantity of harmonics, providing lower EMI and a clean environment for the amplifiers to work in. OPERATIONAL VERSATILITY Almost every parameter in the configuration of the SPA22 can be user defined. Any input can be assigned a name and associated with any audio and video source. Surround format, trigger activation and input sensitivity can be specified for the input. Individual levels, speaker types, crossover frequencies and delay configurations including bass management can be selected for each of the major surround formats. A 140mS global delay system, with dedicated DSP, is incorporated in order to achieve the best possible picture to sound synchronisation. For the highest possible installation flexibility, all the SPA22’s functions can be controlled in three ways: from the front panel, IR or RS232. INPUTS/OUTPUTS The SPA22 provides three HDMI v1.3 inputs for audio and video, incorporating a user-selectable audio processing and bypass function (see Technical Information). HDMI v1.3 capability is significant because it carries uncompressed multi-channel PCM audio from a Blu-ray player to the SPA22’s DACs and beyond to the amplifiers and loudspeakers. This means that while Primare’s proprietary HD audio board is being perfected, HD audio in its highest resolution can be processed through the SP32 and is available immediately to all SPA22 owners. Eight pairs of unbalanced analogue audio inputs are provided together with seven digital audio inputs (incl. professional AES/EBU). Via the ‘input settings’ menu, any audio input can be assigned to any of the 3 Component, 3 S-Video and 4 Composite video inputs, for simultaneous output to the Component, S-Video and Composite analogue video outputs. 7.1 channel analogue audio inputs are also provided for the connection to DVD-A / SACD players. Unbalanced pre-amplified audio outputs (FL, FR, C, SUB, SR, SL, SBL, SBR) are provided for connection to any type of power amplifier. Front channels are re-routable in 7.1 Mode. Three 12V high current DC-triggers are provided, as well as IR and RS232 inputs. Technical information Video circuit All analogue video inputs are converted to digital by the Texas Instruments 10bit TVP5146 video encoder, where OSD from the Sanyo LC74763 OSD generator is added. The digital signal is then converted back to analogue by the 10bit Cirrus CS4955 decoder. By performing all the video conversion in the digital domain using 10bit processing we can maintain high quality video at all outputs and at all times regardless of the selected input source. This is a significant improvement over the SP31, which could only switch component video and convert S-video to composite, entirely in the analogue domain. HDMI The SPA22 incorporates a three input HDMI repeater based around the Silicon Image SIL9135, which incorporates digital audio extraction over SPDIF or I2S format. It supports both multichannel PCM audio from Blu-ray, SACD or DVD-players and the more commonly used Dolby D and DTS formats, which are fed over high quality FFC cable to the DSP processor. A user selectable bypass function for HDMI audio is also available, telling the SPA22 either to process or forward HDMI audio to a display device. A user-configured default function addresses any other audio input source, if there is no signal on the defined HDMI input. DSP The SPA22’s DSP is performed by a Freescale DSPC56371 24bit processor, which is able to fast lock and decode all the commonly used multichannel formats (with up to 192kHz sampling frequency). A slave Freescale DSPB56367 24bit processor handles all delay functions, including the global 140mS delay used for perfect synchronising of picture and sound. Analogue signals for Dolby Pro Logic IIX or DTS NEO processing are first converted to digital by a Burr Brown PCM4202, which incorporates an automatic level sensing circuit eliminating the need for manual ADC adjustments, as used in the SPA21. DACs and analogue circuits The audio DACs are 24bit, 192kps WM8740s from Wolfson, used in conjunction with Burr Brown OPA2134 and Texas Instruments NE5532 operational amplifiers for the analogue, semi-balanced, DC-servo controlled, buffering and filtration circuits. These feed the purified audio signal into an eight-channel low distortion, half passive volume control CS3318 from Cirrus. Lesson learned from the SPA21: for the SPA22 we have located all the gain stages and DC-servo circuits before the volume control in order to achieve a much better signal to noise ratio. An eight and 2-channel analogue bypass mode bypasses the DSP completely, are still available, for the analogue fans. SPA22 Features Modular design architecture 1080p HDMI Switching. Component / Composite / S-Video 5 x 120 Watts. Multi-channel PCM compatible Dolby® Digital, Prologic IIX, EX 7.1, dts®, dts-ES 6.1, Neo6 Re-Routable Front Channels in 7.1 Mode DVD-A & SACD 7.1 Input. Fully Configurable & Format independent Bass Management Discrete IR & Full RS232 Operation. Programmable Triggers Available in Black or Titanium.

Primare SPA 22

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