L-Acoustics 8XT Manual de usuario

8XT COAXIAL ENCLOSURE

8XT ENCEINTE COAXIALE

VERSION 1

www.l-acoustics.com

USER MANUAL

MANUEL UTILISATEU

www.l-acoustics.com

8XT_UM_ML_1 www.l-acoustics.com 1en

1SAFETY WARNINGS

All information hereafter detailed applies for the L-ACOUSTICS®8XT Coaxial Enclosure, designated in this section

as ‘‘the product’’.

1.1 Symbol description

Throughout this manual the potential risks are indicated by the following symbols:

The WARNING symbol indicates a potential risk of physical harm to the user or people within close

proximity to the product.

In addition, the product may also be damaged.

The CAUTION symbol notifies information to the user which can prevent from possibly damaging

the product.

The IMPORTANT symbol notifies an important recommendation of use.

1.2 Important safety instructions

1. Read this manual

2. Heed all safety warnings

3. Follow all instructions

4. The user should never incorporate equipment or accessories not approved by L-ACOUSTICS

5. Sound Levels

Sound systems are capable of producing high Sound Pressure Levels that can be dangerous and

potentially cause hearing damage especially when exposed to them over a long period of time.

Do not stay within close proximity of the loudspeakers when operating.

6. Environments

Use the product only in E1, E2, E3, or E4 environments according to EN55103-2 standard.

WARNING

IMP

RTANT

CAUTION

WARNING

IMPORTANT

8XT COAXIAL ENCLOSURE

User Manual

VERSION 1

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7. Heat

Do not operate the product near any heat source, such as radiators or other devices.

8. Water and moisture

Even if the product is weather-resistant, it can not be exposed to moisture directly

for a long period of time (rain, sea spray, shower, steam), nor put in direct contact

or partially immersed in water. This would cause irreversible damage to exposed components.

9. System Parts and Rigging inspection

All system components must be inspected before use, in order to detect any possible defects.

Please refer to the “Care and Maintenance” section of this manual as well as any other manuals

pertaining to the system for a detailed description of the inspection procedure.

Any part showing any sign of defect must be immediately put aside and withdrawn for use to be

inspected by qualified service personnel.

10. Mounting instructions

Do not place the product on an unstable cart, stand, tripod, bracket, or table. The product may fall,

seriously damaging itself, and causing serious injury. Any mounting of the product should follow the

manufacturer’s instructions, and should use a mounting accessory recommended by the manufacturer.

11. System load capacity and setup safety limits

The load capacity and setup safety limits when rigging or stacking a sound system should be strictly

followed according to the instructions outlined in this manual.

12. Causes that require immediate service

Servicing is required when the product has been damaged in any way such as:

•The product has been exposed to rain or moisture,

•The product was dropped or the enclosure is damaged,

•The product does not operate normally.

13. Shipping

Use the original packaging for shipping the product, unless dedicated fly cases are provided.

14. Manual

Keep this manual in a safe place during the lifetime of the product.

This manual forms an integral part of the product.

Reselling of the product is only possible if this manual is available.

Any changes made to the product have to be documented in writing and passed on to the buyer in

the event of resale.

WARNING

IMP

RTANT

WARNING

CAUTION

8XT_UM_ML_1 www.l-acoustics.com 3en

1.3 EC declaration of conformity

L-ACOUSTICS

13 rue Levacher Cintrat

Parc de la Fontaine de Jouvence

91462 Marcoussis Cedex

France

State that the following products:

Acoustic loudspeaker, 8XT

Acoustic loudspeaker, 12XT

Acoustic loudspeaker, 115XT HiQ

Are in conformity with the provisions of:

Machinery Directive 98/37/CE

Low Voltage Directive 73/23/CE

Applied rules and standards:

EN ISO 12100-1: 2004

EN60065

Established at Marcoussis, France, the 01/08/2007

Jacques Spillmann

8XT COAXIAL ENCLOSURE

User Manual

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8XT_UM_ML_1 www.l-acoustics.com 4en

2CONTENTS

1SAFETY WARNINGS 1

1.1 Symbol description .................................................................................................................................................. 1

1.2 Important safety instructions................................................................................................................................... 1

1.3 EC declaration of conformity .................................................................................................................................. 3

2CONTENTS 4

3INTRODUCTION 5

3.1 Welcome to L-ACOUSTICS ................................................................................................................................... 5

3.2 Unpacking................................................................................................................................................................ 5

4XT COAXIAL RANGE 6

58XT COAXIAL ENCLOSURE 8

6INSTALLATION 9

6.1 Rigging material........................................................................................................................................................ 9

6.2 Connecting speakers ............................................................................................................................................... 9

7OPERATION 11

7.1 8XT system configuration ..................................................................................................................................... 11

7.2 “FULL RANGE” mode .......................................................................................................................................... 11

7.2.1 Connecting to the LA4........................................................................................................................... 11

7.2.2 [8XT_FR], [8XT_FI], and [8XT_MO] presets....................................................................................... 12

7.3 “HIGH PASS” mode .............................................................................................................................................. 13

7.3.1 Connecting to the LA4........................................................................................................................... 13

7.3.2 [8XT_FR_100], [8XT_FI_100], and [8XT_MO_100] presets............................................................... 13

7.4 “LF EXTENSION’’ mode ...................................................................................................................................... 14

7.4.1 Connecting to the LA4........................................................................................................................... 14

7.4.2 [8XT_SB118] preset .............................................................................................................................. 15

8CARE AND MAINTENANCE 16

8.1 Maintenance information....................................................................................................................................... 16

8.2 Testing procedure ................................................................................................................................................. 16

8.3 Spare parts............................................................................................................................................................. 16

9SPECIFICATIONS 17

8XT_UM_ML_1 www.l-acoustics.com 5en

3INTRODUCTION

3.1 Welcome to L-ACOUSTICS

Thank you for purchasing the L-ACOUSTICS®8XT Coaxial Enclosure.

This manual contains important information on installing and operating the product correctly and safely. Read this

manual carefully in order to familiarize yourself with these procedures.

As part of a continuous evolution of techniques and standards, L-ACOUSTICS reserves the right to change the

specifications of the product and the content of this manual without prior notice. Please check the L-ACOUSTICS

internet website @ www.l-acoustics.com on a regular basis for latest update.

If the product requires repair or if information upon warranty is needed, please contact an approved L-ACOUSTICS

distributor. In order to obtain the address of the nearest distributor go to the L-ACOUSTICS internet website

@ www.l-acoustics.com.

3.2 Unpacking

Carefully open the shipping carton and check the product for any noticeable damage. All L-ACOUSTICS product is

tested and inspected before leaving the factory and should arrive in perfect condition.

If found to be damaged, notify the shipping company or the distributor immediately. Only the consignee may institute a

claim with the carrier for damage incurred during shipping. Be sure to save the carton and packing materials for the

carrier's inspection.

8XT COAXIAL ENCLOSURE

User Manual

VERSION 1

8XT_UM_ML_1 www.l-acoustics.com 6en

4XT COAXIAL RANGE

The L-ACOUSTICS®8XT enclosure is the most compact model within the L-ACOUSTICS XT coaxial range and

operates on a frequency bandwidth of 65 Hz to 20 kHz. The system response can be extended down to 32 Hz with the

addition of the LACOUSTICS®SB118 subwoofer.

The system solution developed by L-ACOUSTICS for the XT range comprises the elements needed to fully take

advantage of the possible configurations and optimize the system. The main components of the system are:

8XT  Passive compact coaxial enclosure

12XT  Active/passive multipurpose coaxial enclosure

115XT HiQ  Active coaxial stage monitor

ETR8-2  Mounting accessory for the 8XT enclosure

ETR12  Mounting accessory for the 12XT enclosure

ETR15  Mounting accessory for the 115XT HiQ enclosure

XTLIFTBAR  Rigging accessory for the 12XT and 115XT HiQ enclosures

LA4  Dedicated amplified controller

LA NETWORK MANAGER  Remote control software for the amplified controllers

SOUNDVISION  Acoustical and mechanical modeling software

Figure 1: XT range components

LA NETWORK MANAGE

ETR8-2

LA4

ETR12

ETR15

12XT

115XT HIQ

SOUNDVISION

8XT

XTLIFTBA

8XT_UM_ML_1 www.l-acoustics.com 7en

The XT range components are compatible with standard L-ACOUSTICS accessories. These accessories include the

loudspeaker cables SP.7, SP10, and SP25 with respective lengths of 0.7m (2.3ft), 10m (32.8ft), and 25m (82ft). Each

cable is 4 conductor cable with 4mm2conductor cross-section (13 SWG, 11 AWG) and features two NEUTRIK®

NL4FC Speakon®connectors.

The XT system is driven and powered exclusively by the L-ACOUSTICS®LA4 amplified controller. This ensures

intelligent protection, filtering, and equalization of the enclosures. 4 channels of amplification are provided along with

the OEM factory preset library, ensuring the optimization and performance of the system within limitations of the

recommended configurations.

Each system design configuration should be first modeled and studied using the L-ACOUSTICS®SOUNDVISION

application software. The software predictions are based on the preset parameters stored in the amplified controllers.

Several amplified controllers can be interconnected and monitored through the proprietary L-ACOUSTICS®L-NET

network using the L-ACOUSTICS®LA NETWORK MANAGER application software.

A detailed description on the use of the LA4 amplified controller, SOUNDVISION and LA NETWORK MANAGER

application softwares are beyond the scope of this manual. Please refer to the appropriate documentation, also available

on the L-ACOUSTICS internet website @ www.l-acoustics.com.

8XT COAXIAL ENCLOSURE

User Manual

VERSION 1

8XT_UM_ML_1 www.l-acoustics.com 8en

58XT COAXIAL ENCLOSURE

L-ACOUSTICS®8XT enclosure features a 1.5’’ diaphragm compression driver coaxially-loaded (for HF directivity

control) by an 8’’ low frequency transducer mounted in a bass-reflex tuned enclosure. The internal passive crossover

network uses proprietary third order filters. The linearization and protection of the transducers is defined by the drive

parameters contained in the LA4 amplified controller. The nominal impedance of the 8XT enclosure is 8 ohms.

The coaxial transducer arrangement produces a 100° axi-symmetric directivity output along with a smooth tonal

response free of secondary lobes over the entire frequency range.

Figure 2: 8XT enclosure with rigging components

The wedge-shaped cabinet design makes the 8XT perfectly suited to all multipurpose sound reinforcement

applications. Short or long throw monitoring use can be achieved with two fixed angle settings of either 30° or 40° with

regard to the vertical. The cabinet also features a pole socket to mount the cabinet on a pole stand or to fly the cabinet

using the complimentary L-ACOUSTICS®ETR8-2 accessory. Four inserts are also available for 3rd party

OMNIMOUNT®30.0 SERIES accessories.

The 8XT cabinet is made of high grade Baltic birch plywood, with remarkable mechanical and acoustic properties.

predrilled template

Grill

Pole mount socket

Wedge-shaped cabinetry

Safety eyebolt insert

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