MOTU Audio Express Guide de l'utilisateur télécharger pdf (Page 11)

CHAPTER

About the 4pre

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

The 4pre Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

The 4pre Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

16-bit and 24-bit recording . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CueMix mixing and effects. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Host Audio Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

OVERVIEW

The 4pre is a hybrid FireWire and USB2 audio

interface for Mac and Windows that offers six

independent inputs and eight independent

outputs. Both analog and digital I/O are offered at

sample rates up to 96 kHz. All inputs and outputs

can be accessed simultaneously. The 4pre is housed

in a sturdy, compact half-rack enclosure that

connects directly to a computer via a standard

FireWire or USB cable.

The 4pre offers the following main features:

■

Universal computer connectivity via FireWire or

high-speed USB 2.0

■

Bus-powered operation (FireWire only)

■

Two 24-bit analog quarter-inch (TRS) outputs

■

Four combo XLR/TRS mic/guitar inputs with

preamps, 48V phantom power, 20 dB pad, and

Precision Digital Trim™ preamp gain adjustment

■

Operation on all I/O at standard sample rates up

to 96 kHz

■

Digitally controlled analog trim for all analog

inputs

■

Coaxial S/PDIF digital I/O at sample rates up to

96 kHz

■

SMPTE synchronization

■

Headphone jack with independent output and

volume control

■

Extra headphone jack that mirrors the main outs

■

Front panel volume control of the main outs

■

Front-panel mixing of live inputs

■

Front panel metering and status LEDs

■

Stand-alone operation

■

Mac and Windows drivers for multi-channel

operation and across-the-board compatibility with

any audio software on current Mac and Windows

systems

■

CueMix FX cross-platform mixing software with

attractive graphic mixing and a convenient tabbed

interface for quick access to all features in one

window. CueMix also provides a full-screen real-

time FFT display, spectrogram “waterfall” display,

oscilloscope, X-Y plot, linear or polar phase

analysis, and a tuner.

With a variety of I/O formats, mic preamps and

no-latency mixing and processing of live input, the

4pre is a complete, portable “studio in a box” when

used with a Mac or Windows computer.

THE 4PRE REAR PANEL

The rear panel has the following connectors:

■

Four combo XLR/TRS mic/instrument inputs

■

Four balanced +4dB quarter-inch (TRS) analog

outputs (with 24-bit 96 kHz converters)

■

Coaxial S/PDIF in/out

■

1394 FireWire B connector

■

High-speed USB 2.0 connector

■

DC power jack

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MOTU Audio Express Guide de l'utilisateur Page 11

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