User manual LAVRY MAD-824 QUICKSTART V2.0

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Manual abstract: user guide LAVRY MAD-824QUICKSTART V2.0

Detailed instructions for use are in the User's Guide.

[. . . ] The audio XLR inputs of the M·AD-824 are electronically balanced line level (nominal +4dBm). In order to maintain good noise rejection qualities, Lavry Engineering recommends that you use balanced inputs for unbalanced sources as well. The polarity of the XLR inputs on the M·AD-824 is configured at the factory for: Pin 2 "+" (non-inverting) & Pin 3 "-" (inverting). It is possible to switch to Pin 2 "-" (inverting) & Pin 3 "+"(non-inverting) by changing the setting of the DIP switch Position 2 from OFF to ON. [. . . ] The lamps for the parameters or function will illuminate to indicate their status as you toggle through each function, then move on to the next function. To exit the program mode at any time, hold the switch either UP or DOWN for 3 seconds. If you don't use the switch for 10 seconds, the unit will automatically exit the program mode; except in Reference Mode, which will remain active until you hold the switch down (Select). 3 M·AD-824 Quick-Start Guide 6. ) Select the Desired WORD LENGTH (16, 20, 24 bit). Enter program mode and the Word Length lamps illuminate (the first function in the list). To set the Word Length, toggle "Up" (SET) until the lamp next to the desired word length stops blinking (16, 20, or 24 bits). The Word Length you just set can now be selected by clicking DOWN. Selecting by clicking the switch "Down" both enables the Wordlength you just set and changes the display to indicate the status of the next function7. ) Optional SOFT SATURATION. Again- while in Programming Mode if the lamp is blinking, the function is not selected or is "OFF. " If it stays lit, it is selected or "ON. " Analog Soft Saturation This is an analog peak limiter to help protect against overloads. The MAX lights still indicate when the maximum input level of the converter is exceeded and the resulting digital waveform will be "clipped. " An internal 3-position jumper, J6, enables the threshold to be lowered or raised for the analog soft saturation feature. Please refer to the LavryBlue Operations Manual for details. Digital Soft Saturation Select this option to emulate an overdrive condition of magnetic tape. Signal levels below -12 dBFS digital are raised 6db's. Above this level, a transfer function that emulates analog tape saturation is applied to the waveform. As a result signal peaks that would have reached "0dBFS"are reduced by 6dB's. Please keep in mind that enabling this mode automatically adds 6dB more level as seen on the meters of the M·AD-824 (for signals below the ­12dBFS "threshold"), so the point at which the "saturation" starts is "-6dB" on the meters. The MAX lights still indicate when the maximum input level of the converter is exceeded and the resulting digital waveform will be "clipped. " Please Note- If your music source has a fairly high average level, and the input is already high enough that the signal peaks are near "0dB" on the meters, you may find that you want to lower your input level when you switch this function "ON. " This may mean that the increase in level is less than the maximum 6dB's possible, but at that point (with that much "saturation") it will probably sound noticeably distorted. This function is not supposed to replace a limiter, if that is what is called for. The design is optimized to prevent an occasion loud peak from causing clipping if the level was raised in a program source that has a relatively low average level with occasional peaks that are much louder- a "wide dynamic range. " The next two settings on the MAD front panel are METER functions, so they will be addressed after the Dither and Noise Shaping functions. Click the switch down (Select) until the Dither, ABC-1, and/or ABC-2 lamps start blinking. 4 M·AD-824 Quick-Start Guide 8. ) Select DITHER & Optional NOISE SHAPING for 16 bit or 20 bit modes. Dither, ABC-1 and ABC-2 are grouped together (similar to word length). C coustic it Correction® is dither plus psycho-acoustic enhancement of the converter's dynamic range for word length reduction to 20 or 16 bits. Some describe this as getting more than 16 bits performance with a 16 bit word length. [. . . ] So if you want to program the Slave modules differently than the Master, be sure to program the Master module first. ·When the frame is powered, the slaves will always emulate the nearest master module. INSTALLATION OF THE M·DA-824: The flexibility of the LavryBlue 4496 chassis allows up to 4 single width modules to be in different slots within the frame with some restrictions: If the unit has an M·AD-824 A-to-D module, it must be in the leftmost slot, and an M·SYNC module is required. The M·SYNC panel replaces the logo panel in the leftmost position on the front of the 4496. Additional M·AD-824's must be in the adjacent slot(s) to the immediate right of the first M·AD-824 module. [. . . ]

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