Звуковая карта M-AUDIO Omni i/o. Инструкция на английском языке

Table of Contents
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1. Theory of Operation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. Features   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 Recording Section  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.2 Mixing Section (all balanced/unbalanced on TRS jacks)   . . . . . . . . .3
3. What’s In the Box   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4. Front, Rear, and Top Panel Descriptions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.1 Front Panel   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.2 Rear Panel   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.3 Top Panel  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5. Operational Basics & Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5.1 Balanced Signals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5.2 Unbalanced Signals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.3 Phantom Power   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.4 Sends and Returns  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.5 Plugs and Jacks   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.6 Balanced Cabling & Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.7 Unbalalanced Cabling & Connections   . . . . . . . . . . . . . . . . . . . . . . .9
5.8 Stereo Input and Insert Cables/Connections   . . . . . . . . . . . . . . . . . .10
5.9 Line Levels vs. Mic/Instr Levels  . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.10 Virtual Tracks   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
6. Basic Playback Setup for the Omni I/O   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
7. Basic Recording Setup for the Omni I/O   . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
8. Omni Signal Flow Chart   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
9. Sequencing and the Omni I/O   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
9.1 MIDI Sequencing   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
9.2 Setting MIDI Playback Levels   . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
10. Recording Audio to the Delta 44 or 66   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
10.1 Monitoring the Signals You Are Recording   . . . . . . . . . . . . . . . . .20
10.2 Monitoring the Record Inputs Using ASIO or EASI   . . . . . . . . . .22
10.3 Setting Record Levels   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
10.4 Record Levels Using the Inserts   . . . . . . . . . . . . . . . . . . . . . . . . . .23
10.5 Setting the Audio Track Playback Levels   . . . . . . . . . . . . . . . . . . .24
10.6 Adding Effects  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
10.7 Recording Your MIDI Instruments as Audio Tracks  . . . . . . . . . . .25
11. Mixing With the Omni  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
11.1 Organizing the Audio Tracks for Mixing   . . . . . . . . . . . . . . . . . . .27
11.2 Using the Direct Outs 1-4   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
12. Alternate Omni Setups   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
12.1 Recording with Four Pre-Amps   . . . . . . . . . . . . . . . . . . . . . . . . . .28
12.2 Monitoring While Recording to Four Tracks   . . . . . . . . . . . . . . . .28
12.3 Recording Four Line Inputs   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
12.4 Recording FX   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
12.5 Submixing MIDI Instrument  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Limited Lifetime Warranty   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Introduction
Congratulations on your purchase of the Omni I/O Integrated Desktop Audio
Station, designed and manufactured by M Audio.  The Omni I/O is a “front
end” companion to the Delta 66 or Delta 44 by M Audio, offering you truly
professional options for both recording to and monitoring from your Delta Series
audio card.
Please read this manual to familiarize yourself with the Omni I/O and its
features, and to understand how you can make the versatility of the Omni I/O
work best for you. Before connecting the Omni I/O, you must install your Delta
44 or Delta 66 card, carefully following the procedure found in the manual for
your Delta card.
1. Theory of Operation
Arecording console performs two functions.  It routes the signal you are about
to record, providing the ability to pre-amplify and shape that signal before it gets
to the recording device.  At the same time, it handles all playback, allowing you
to mix, add an effect, and monitor your recorded signal as well as “virtual” MIDI
keyboard tracks.
The Omni I/O performs these tasks. The Omni, in conjunction with a Delta 44 or
Delta 66 PCI Interface and your PC or Macintosh computer, adds the
functionality of a recording console in a desktop unit. The Omni I/O is modeled
after what is known as a “split console” design, where the recording and
monitoring sections function independently.
Two high quality M Audio Mic/Instrument pre-amps are routed to the Delta’s
analog inputs 1 & 2. The level that you record is controlled by the Omni pre-
amp’s independent gain controls in conjunction with the +4/-10 operating level
that you select in the Delta Control Panel. An insert jack added to the record
path allows you to process the signal with outboard gear, should you choose to.
Line inputs 3 & 4 give you a total of 4 direct analog inputs to the Delta card from
the Omni.
You’ll use your music software and the Delta Control Panel to make routing
selections for recording and monitoring your audio tracks.  Audio tracks are
routed from the Delta card to a mixer that is built-in to the Omni, which
combines the four Delta analog outputs with four auxiliary stereo inputs and
one stereo effects return for the equivalent of a 14 channel mixer. One effect send
is provided on each of the Delta output’s mixer channels. The aux inputs can be
used to monitor MIDI instruments as “virtual” tracks, and then route those
instruments to the line inputs for easy recording without repatching.
This ultra-quiet Omni mixer, with extremely wide frequency response, gives you
2

control room outputs and two headphone outputs, all with independent level
controls. A separate “mix” out provides an independent feed to your mixdown
deck. Ultimately, your individual and master volume levels will be controlled by
your music software and/or Delta Monitor Mixer, and therefore can be saved
into the computer’s memory for each recording project.
The Omni I/O takes advantage of computer-based recording and combines it
with proven M Audio pre-amp and mixer technology to bring you an extremely
powerful desktop recording solution. Incorporate your existing gear, or do all of
your sounds and effects right inside the computer.  Either way, the Omni I/O
can ultimately handle all of your signal flow from tracking to mixdown.
2. Features
2.1 Recording Section
•  2  Mic/Inst plus 2 line level balanced/unbalanced analog inputs to the Delta
44 or Delta 66 soundcard.
•  The Omni’s two Mic/Inst inputs are equipped with XLR phantom power,
insert I/O jacks, individual gain controls, gain reduction “pad” switch, and
signal/clip indicator LEDs.
•  Low impedance mic inputs provide 66dB of gain and utilize M Audio’s
critically acclaimed DMP2 pre-amp technology. They are switchable to hi-
impedance instrument inputs with 46dB of gain, ideal for electric/acoustic
guitars.
•  The Omni Mic/Inst pre-amp has a frequency response of 10Hz to 200kHz,
low THD of .0009%, with a dynamic range of 130dB.
•  Stereo effect return.
2.2 Mixing Section (all balanced/unbalanced on TRS jacks)
•  The Delta analog outputs feed the Omni I/O ultra-quiet mixer, with the
addition of 4 stereo aux inputs for MIDI devices and 1 stereo effects return.
•  The 4 Delta analog outputs can simultaneously be used as independent
balanced/unbalanced direct outs for additional effects sends, alternate mix
outputs, or feeds to a secondary mixer.
•  Stereo Aux inputs 1 and 2 can be muted in the mixer and re-routed to the
Delta line inputs for easy audio recording of MIDI instruments or other
auxiliary inputs.
•  Mix out for recording to a mix deck.
•  Control room outs with independent level control for monitoring.
•  Two headphone outputs with individual level controls.
•  One mono effect send per Delta channel.
•  L/R output signal/clip LEDs.
3