M-audio LX4 2.1 System User Manual [ru]

User Guide

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

What’s in the Box? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Studiophile LX4 Surround System Features . . . . . . . . . . . . . . . . . . . . . .3

Speaker Enclosure Front and Rear Panel Features . . . . . . . . . . . . . . . . .4

LX4-2.1 Subwoofer, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

LX4-2.1 Subwoofer, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

LX4 Satellite Speaker, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

LX4 Satellite Speaker, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Installation - LX4-2.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Speaker Wire Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

TRS Balanced/Unbalanced Connections . . . . . . . . . . . . . . . . . . . . . .7

Connecting to Preamp, Computer or Game Console Outputs . . .8

Installation - LX4-5.1 Expander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Speaker Wire Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Placing the Speakers - LX4-2.1 System . . . . . . . . . . . . . . . . . . . . . . . . . .9

Placing the Speakers - LX4-5.1 Expander . . . . . . . . . . . . . . . . . . . . . . .11

Technical Support & Contact Information . . . . . . . . . . . . . . . . . . . . . . .12

Warranty Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Appendix A - Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Appendix B - Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Studiophile LX4 System

version: LX4-050504

Introduction

Thank you for choosing the Studiophile Series LX4-2.1 / 5.1 studio nearfield
monitor speakers. M-Audio is well known for digital audio interface technology,
digital converters, audio preamps and mixers. Now, born from extensive
research and development, the Studiophile LX4-2.1 System and 5.1 Expander is
changing the concept of studio reference monitoring in 2.1 / 5.1 systems.

The LX4-2.1 System is designed with the option to add the LX4-5.1 Expander
package, thereby upgrading to the LX4 Surround System,a 5.1 system for music
production or playback of 5.1 music and sound tracks. This feature makes the
LX4 system extremely flexible, fitting into all modern digital music production
and playback applications.

The LX4 Surround System was designed to overcome the size limitations of
conventional studio reference monitors within the digital audio environment.
The compact system delivers wide-range frequency response by employing two
extraordinary drivers, both of which are magnetically shielded for desktop music
production, and a unique crossover and equalization technology, licensed by
M-Audio.The LX4-2.1’s Subwoofer provides extended low frequency down to
40Hz, making it possible for the LX4 Surround System to use much smaller
Satellite Speakers and offer both ultimate convenience for desktop production
and highly accurate 40 to 20Khz frequency response range.

Designed and tested by veteran audio engineers to meet your needs in the
studio monitoring environment, the LX4 Surround System’s goal is focused on
delivering pure, original sound without any additional coloration. The LX4
Satellite monitors are self-powered from amplifiers contained in the Subwoofer
enclosure, which directly accepts a line level signal from a variety of sources.

For pro engineers at commercial studios to home studio owners, the Studiophile
LX4 Surround System sets a new affordable standard in studio monitoring.

What’s in the Box?

Your Studiophile LX4 box contains:

• LX4 Satellite Speakers (2), (three for 5.1 Expander)

• LX4 Subwoofer Speaker (2.1 System only)

• Speaker Wires (2), (three for 5.1 Expander)

• AC Power Cord, detachable (2.1 System only)

• Actual test results of your LX4 system

• This manual

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Studiophile LX4 Surround System Features

1. Satellite Woofer - the Satellite Speaker’s woofer units are 4 inches in
diameter with a magnetically shielded mineral-filled polypropylene cone, high­temperature voice coil and damped closed cell foam surround. It is designed to
deliver balanced mid- and low-frequency response. Polypropylene is used to
react against the input signals accurately, and to deliver even minimal input
precisely while minimizing distortion.

2. Satellite Tweeter - by employing a specially developed 1-inch mylar
dome with magnetic shielding, the Satellite Speaker’s tweeters can deliver
distortion-free original sound and offer extremely natural response.It minimizes
reaction time by using a uniquely shaped mylar dome for excellent delivery, and
also minimizes resonance by adapting a unique internal damping technology.

3. Sub-Woofer (LX4-2.1 System) - the Sub-woofer unit is 8 inches in
diameter with a specially developed curved profile pulp cone, high-temperature
voice coil and damped closed cell foam surround. It is designed to deliver
subwoofer sound pressure at very high efficiency with extremely low distortion.

4. Enclosure - just as other components do, the LX4 Surround System
enclosures have an important role to play. In order to provide more stable
performance, these enclosures employs a special high-density MDF and unique
interior reinforcement designed to absorb vibration and impact generated
under extreme conditions.

5. Network & Power Amplifiers - the LX4 Surround System’s active
equalization and crossover networks, as well as the power amplifiers housed in
the 2.1 Sub-woofer are specially designed for the specific carefully-chosen
woofer, tweeter and sub-woofer drivens.The network properly distributes low,
mid, and high frequencies to the components in order to reduce distortion and
loss of signal, thereby achieving a naturally balanced sound.

In order to generate powerful, ultra-crisp sound, there are six separate power
amplifiers inside the LX4-2.1 Subwoofer module. These separately drive the
Sub-Woofer, Left, Right, Center and Surround Left and Right speakers in a
high-end multiple-amplifier structure. The power delivered to the sub-woofer
driver is 60W, while 27W each is delivered to the Satellite Speakers.

6. Expandable System - LX4-2.1System is designed with the option to add the
LX4-5.1 Expander package, thereby upgrading to a 5.1 system for music production
of 5.1 music and sound tracks. The feature makes the LX4 system extremely
flexible, able to fit all modern digital music production and playback applications.

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Speaker Enclosure Front and Rear Panel Features

LX4-2.1 Subwoofer, Rear

1. TRS Inputs: These jacks accept 1/4” connections with either balanced or

unbalanced wiring. For balanced wiring, a three-conductor TRS plug is
necessary.The input wiring of a TRS connector should be as follows:

TRS TIP - Signal positive (+)
TRS RING - Signal negative (–)
TRS SLEEVE - Signal ground (Shield)

Unbalanced 1/4” wiring can be done with either a two- or three-conductor (TS
or TRS) plug. A two-conductor (TS) plug automatically grounds the signal
negative input, whereas a three-conductor (TRS) plug, wired unbalanced,
provides the option of leaving the negative input open or grounded. We
recommend that you ground the unused negative input (this can be done by
wiring the ring and sleeve of the TRS plug together).

There are 6 TRS Inputs, as follows:

L - Left Ch. Input R - Right Ch. Input
SL - Surround Left Ch. Input SR - Surround Right Ch. Input
C - Center Ch. Input LFE- Low Frequency Effect Input

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2. Sub Volume: Use the Sub Volume to set the Subwoofer output sound

pressure level relative to other output channels as required. Once the
subwoofer to satellite balance is achieved,use the Master Volume to control
overall listening levels.

3. Power / Protect. LED: When the power switch is switched to ON, the

LED will glow “Green.” When the Protection circuitry of the power
amplifiers has turned on because of any abnormal conditions, including
overdriving the speakers into heavy clipping for too long, the LED will glow
“Orange” and the output level will reduce by 12dB.

4. Master Volume: Use the Master Volume to set the output sound

pressure of all channels from the LX4 system to proper level as required.

5. Speaker Outputs: (5) spring-type Speaker Output terminals for

connecting (5) Channel Amplifier Outputs to all speaker channels, as follows:

L: Use Speaker wire included in the LX4-2.1 package to connect the

L channel amplifier output to the Left Speaker.

R: Use Speaker wire included in the LX4-2.1 package to connect the

R channel amplifier output to the Right Speaker.

SL: Use Speaker wire included in the optional LX4-3.0 package to connect

the Surround Left channel amplifier output to the Surround Left Speaker.

SR: Use Speaker wire included in the optional LX4-3.0 package to connect

the Surround Right channel amplifier output to the Surround Right Speaker.

C: Use Speaker wire included in the optional LX4-3.0 package to connect

the Center channel amplifier output to the Center Speaker.

6. Product Label:This label contains the model and serial number information.

7. Power Receptacle: Accepts a detachable 3-circuit line cord in order to

apply AC power to the entire LX4 system.

8. Power Switch:This switch turns the LX4 system on and off.The “On” position

is indicated by a white dot.

9. Fuse Holder: Holds the external main fuse.

10. Voltage-select Switch: Provides 2 selections, 115VAC (120VAC) and 230VAC.

This switch should be set to match the “house supply” (receptacle) voltage of the
country or location in which the speaker is used.The 115VAC (120VAC) setting is
correct for the USA,while the 230V setting is correct for most of the UK and Europe.

LX4-2.1 Subwoofer, Front

The front panel of the Subwoofer houses the Subwoofer driver and
Sub-Frequency Port.

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