User Manual-for Windows

Quick Reference: Audio Express Front Panel
1. These two Precision Digital Trim™ rotary encoders
provide triple-function control over the trim level, mix volume, and pan of the XLR/TRS combo jacks on the rear panel. Push the MIX knob (4) repeatedly to cycle among the four separate mixes and trim mode. The LEDs (12) indicate the current mix, or trim mode. When a mix is active, push and hold the MIX knob to toggle between volume and pan control, as indicated by the LEDs (12). When in trim mode, use the knob and input level meters (9) to calibrate the input signal level. These knobs provide +60 dB and +22 dB of boost, respectively, for the mic (XLR) and instrument (TRS) input jacks. Adjust- ment can be made in approximately 1 dB increments. Both jacks have preamps, so you can plug in just about anything: a microphone, a guitar or even a synth. For +4 dB signals, use the TRS line inputs instead. For the Mic (XLR) input, push the encoder to toggle a -20 dB pad; push and hold to toggle 48V phantom power. When in mix mode, use the knob to control the jack’s input volume or pan (as indicated by the LEDs, 12) for the currently selected mix.
2. These two Precision Digital Trim™ rotary encoders
provide triple-function control over the trim level, mix volume, and pan of the TRS line in 3-4 jacks on the rear panel. Push the MIX knob (4) repeatedly to cycle among the four separate mixes and trim mode. The LEDs (12) indicate the current mix, or trim mode. When a mix is active, push and hold the MIX knob (4) to toggle between volume and pan control, as indicated by the LEDs (12). In trim mode, these knobs provide 22 dB of gain in approximately 1 dB increments.
3. This rotary encoder controls the input volume and pan of
the S/PDIF jack for the currently selected mix. In trim mode, this knob provides 22 dB of gain in approximately 1 dB increments.
4. This multi-function knob controls volume of the Audio
Express’s four mix busses (12). Push the knob repeatedly to cycle among the four mix busses, as indicated by the LEDs (12). When a mix is active, push and hold the VOL knob to toggle the individual channel knobs (1,2 and 3) between volume and pan control, as indicated by the LEDs (12).
5. Turn the PHONES knob to control the headphone jack
volume. Push the knob to also control the Audio Express’s main outs, as indicated by the “+main” LED (6). Push again to control
only
the main outs (instead of phones);
in this case, the “+main” LED flashes. When power is off, push the PHONES knob to power on the Audio Express; push and hold to turn it off. When connected to the computer via FireWire, the Audio Express is powered by its FireWire connection. When connected via USB, it must be powered with the included DC power adapter.
6. The “+main” LED has three states: off, on, and flashing.
Push the PHONES knob to cycle among three volume control modes: phone jack only (off), phones+main outs (on), or main outs only (flashing).
7. These LEDs indicate whether the -20 dB pad or 48V
phantom power is enabled or disabled for the corre- sponding mic input (1).
8. The MAIN OUT meters provide five-segment stereo
metering for the main outs, ranging from -42 dB to -1 dB. The LINE meters provide four-segment metering for the line inputs 3-4 and signal activity LEDs at the bottom for line outs 3-4.
9. The MIC / INST meters provide ten-segment ladder LED
metering for the two mic/instrument combo jacks, ranging from -42 dB to clip.
10. Indicates the current operational sample rate. 11. The MIDI and S/PDIF activity LEDs indicate signal
presence for each input and output.
12. The Mix LEDs indicate what is being controlled by the
mix/trim knobs (1, 2, 3 and 4). Push the MIX knob (4) repeatedly to cycle among the four separate mixes and trim mode. When a mix is active, the knobs control input levels for the current mix. Push and hold the MIX knob (4) to toggle between volume and pan control. When trim mode is selected, the knobs control input trim levels.
13. This is a standard quarter-inch stereo headphone jack.
From the factory, its output matches the main outs on the rear panel. But it can be programmed to mirror any other output pair (digital or analog). It can even be programmed to serve as its own independent output. See “Phones Assign” on page 30. Use the volume knob above to control its level.
31
11
2 4 5 6 7 8 9 10
1213