Sound Performance Lab MMC2 manual Fade, Technology

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Master Fader

The MMC 2 multichannel mastering console completes the range of SPL 120 V mastering consoles. Housed in a 19”/11U rack mount chassis the MMC 2 features the same unique 120 volts rails like the MMC 1 and DMC dual-channel mastering console to achieve the optimum audio performance.

The purpose of the development was the creation of mastering consoles that would be superior in audio quality to all known and foreseeable audio formats, whether analog or digital. Such consoles would provide both for an unaltered reproduction of the sonic quality of high resolution playback formats like SACD and in the process, remain a safe capital investment for many years.

The MMC 2 is conceived as the center of a mastering environment to provide speaker management, sources and returns connectivity, input and output trimming, pure analog multichannel master fader and monitor level setting. As an option, the MMC 2 can be supplemented with the SPL MasterBay to provide an automated 8 x 8 channel insert routing of external processors.

Digital audio formats have undergone continuous development and change and will continue to do so. With the degree of incompatibility created by the “format war” between PCM and DSD, the need for a technology that is supe- rior in dynamic range, headroom and sound quality to either or any other such format is obvious – and the only solution is discrete analog technology in its most advanced implementation.

Moreover additional prerequisites speak for the employment of high-perform- ance analog technology:

The number of necessary AD/DA conversions should be reduced to a minimum. With the MMC 2, digital sources can be connected to a digital router, which outputs the selected source through the preferred DA converter. This ensures that the sound quality remains comparable and is not affected by converter differences.

High quality analog outboard processing consistently proves itself superior to digital processing. The analog concept allows for problem-free integration of such analog processors.

Monitors and power amplifiers are almost exclusively analog in design. Yet another converter at this point in the chain only degrades monitoring signal paths. Furthermore, DSD signals cannot be monitored on a digital monitoring that operates in PCM.

Technology

SPL’s new SUPRA operation amplifiers are used throughout the MMC 2’s design. They perform at an industry benchmark of 120 volts and their devel- opment alone took four years. The SPL SUPRA op amp achieves a signal-to- noise ratio of 116 dB with a headroom of 34 dB. The dynamic range amounts to 150 dB with a frequency bandwidth of 200 kHz.

With such specifications, the MMC 2 rides comfortably beyond the require- ments of either the current maximum 24 bit/192kHz PCM or 1 bit/256 fs DSD formats, while a digital technology in which the MMC 2 could become a “bottle neck” is not foreseeable.

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Manual Multichannel Mastering Console MMCManual Version 1, 10/2005 Multichannel Mastering Console MMC 2, ModelSound Performance Lab Contents Installation/Security AdvicesFade TechnologySignal Flow Channel bus Insert send ReturnFront Panel SoloSources Control ElementsInput Trims Insert/Return MonitoringSpeaker Management MonitorsMaster Fader Monitor LevelOutput Trims Option Master Bay MasterBaySignals are Routed also Metering180, this does not matter Please note The display To the XLR pairMeasurements FrequencyAudio Precision INPUT/OUTPUT Phase vs 09/20/05 INPUT/OUTPUT Phase vs 09/20/05 Master Fader Gain Frequency Response LFE to LCR cal. to -10dB Gain Frequency Response Master Monitor Gain Frequency Response Specifications/Power Supply DimensionsPower Supply THD & Noise +24 dBuWarranty
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