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SPL DMC Dual-Channel Mastering Console Model 2490The DMC dual-channel mastering console completes the range of SPL mastering consoles. Housed in a 19”/5U rack mount chassis the DMC features the same unique 120 volts rails like the MMC1 and MMC2 multi-channel consoles to achieve the optimum audio performance. The purpose of the development was the creation of a console that would be superior in audio quality to all known and foreseeable audio formats, whether analog or digital. Such a console would provide both for an unaltered reproduction of the sonic quality of SACD and in the process, remain a safe capital investment for many years. The DMC is conceived as the center of a mastering environment to provide speaker management, sources and returns connectivity, input and output trimming, pure analog 2-channel master fader and monitor level setting. As an option an automated 8 x 2 channel insert routing of external processors is available. Digital audio formats have undergone continuous development and change and will continue to do so. The degree of incompatibility created by the “format war” between PCM and DSD has persuaded us to opt for a technology that is superior in dynamic range, headroom and sound quality to either or any other such format – and constitutes discrete analog technology in its most advanced implementation. Moreover additional prerequisites speak for the employment of high-performance analog technology: 1. The number of necessary AD/DA conversions should be reduced to a minimum. With the DMC, 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. 2. From a purely aesthetic standpoint, high quality analog outboard processing consistently proves itself superior to digital processing. The analog concept allows for problem-free integration of such analog processors. 3. 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 DMC's design. They perform at an industry benchmark 120 volts and were developed during a four-year period during which SPL searched for a new generation of superior discrete analog op amps. The SUPRA op amp achieves a signal-to-noise ratio of 116dB with a headroom of 34dB. The dynamic range amounts to 150dB with a frequency bandwidth of 200kHz. With such specifications, the MMC2 rides comfortably beyond the requirements of either the current maximum 24 bit and 192kHz PCM format or 1 bit and 256 fs DSD format. It is simply not realistic to expect at any foreseeable future date a digital technology environment in which the DMC could become a “bottle neck”. Configuration 1. Sources The Sources section provides for the selection of four stereo inputs and four returns. The inputs are fed to the mastering path, the returns are fed to the monitoring section. 2. Input The selected input signal in the Sources section goes to the Input section. It is routed through passive L/R On and L/R Phase Reverse switches and an active Mono L/R switch function. Sopphisticated rotary trim switches with 32 steps are used for precise gaining from -10dB to +10dB for each Pre Insert L/R as well as Post Insert L/R channel. These switches only route the signal through one precision resistor at any position keeping thermal noise and tolerance at an unprecedented minimum. 3. Master Fader The DMC is equipped with a rotary Master Fader for dynamic mastering purposes and fine tuning the overall level from +10dB to -80dB. The range can also be customized to operate from 0dB to -80dB. With this control's extremely fine level settings, the engineer can attain every ounce of recording headroom. The result, thanks to these controls of practically infinite resolution, is an unparalleled excellence in dynamic mastering. The Master Fader can be taken out of the signal path with the Master Fader On switch. 4. Monitor The Monitor section features a central Monitor Level high-end potentiometer, L/R Solo switches as well as L/R Rhase Reverse and L/R Mono switches. Three signal paths can be monitored: input, output and return. Selecting an input in the Source section will route the output signal of the DMC to the selected speakers. Depressing the Input button again (status LED flashes) will route the input signal to the DMC to the speakers. Thereby an easy comparison between input and output is achieved. 5. Speakers The Speakers section allows for connection of four stereo speaker sets. Three different Dim levels (-10dB, -20dB and -30dB) and Mute can be selected by the push of a button. 6. Insert The DMC offers a switchable Insert point between the Pre Insert Trims and the Post Insert Trims. External processing equipment can be inserted here into the signal path. The DMC can optionally be complemented with an insert box, called MasterBay. The MasterBay consists of a 4U insert box and a remote control panel. Up to eight, 2-channel processors can be connected to the insert box, which is operated by the MasterBay remote panel. With the unique MasterBay the engineer can specify up to four routings, called "sequences", which can be stored and re-called. The remote panel provides a button for each of the eight external processors. Depressing these in sequence switches among choices in processor signal flow. Beside each button is a seven segment LED-display indicating the current position of the processor in the sequence. The mastering engineer can use this feature to compare between sequences in a varying order or to compare the same type of processors—such as in the case of an equalizer from Manufacturer A and one of Manufacturer B. Three memory banks are available which allow an active signal flow sequence to be compared instantly at a button push with three others (for a total of four). The Insert On activates the MasterBay or switches it to a hard-bypass. + Post comment/question/reply
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