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3
DigiMax
™
DP88 User Manual
2
Hookup
2.1
Front Panel Controls
Preamp Controls. These controls allow you to adjust the gain and enable phantom power for
every onboard microphone preamp.
1. Preamp Gain: Use this control to adjust the level of microphone preamps
1-8. The display to the far right will show the current trim level.
2. Next / Prev: Use these buttons to select the microphone preamp you wish to control. The
display to the right of the trim control will show which preamp is currently being controlled.
3. Direct: The DigiMax DP88 provides direct-to-converter line inputs for
every channel via a DB25 connector on the rear panel. Press this button
to enable the Direct input for the currently selected channel.
4. 48V: The DigiMax DP88 provides 48V phantom power for each microphone preamp.
This feature can be individually enabled for each channel, using this button. When
48V is active, the blue LED at the top of that channel’s meters will illuminate.
Power User Tip:
Use the Direct-to-Converter input to connect line level devices or your favorite
boutique analog mic preamps. When active, this input completely bypasses the mic preamp circuit
and its gain stage to directly access the analog-to-digital converter.
Warning:
Phantom power is only required for condenser microphones and can severely
damage dynamic mics, especially ribbon mics. Therefore, switch phantom power off for all
channels where it is not required.
XLR connector wiring for phantom power:
Pin 1 = GND
Pin 2 = +48V
Pin 3 = +48V
Input Meters. These 8-LED meters show the input level of the eight analog inputs on your
DigiMax DP88. The green LEDs will illuminate when the input signal ranges from -50 dBFS to -6
dBFS. The yellow LEDs will illuminate when the input signal ranges from -4 dBFS to -2 dBFS. The
red Clip LED will illuminate when your input signal reaches -0.5 dBFS. At this level, the signal will
begin to overload the analog-to-digital converters and exhibit signs of clipping. Use the gain
controls to keep the signal below this level.
Internal Clock / Sample Rate Selector. Use this button to select the internal sample rate for
your DigiMax DP88 (44.1, 48, 88.2, or 96 kHz) when it is clocking internally. Pressing this button
will cycle through the available sample rates. As each sample rate is selected, its indicator LED
will illuminate.
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