L-Acoustics 12XTi User manual

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USER MANUAL
MANUEL D’UTILISATION
FR
EN

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LA4
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LA4
CONTROLEUR AMPLIFIE
CONTROLEUR AMPLIFIECONTROLEUR AMPLIFIE
CONTROLEUR AMPLIFIE

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1SAFETY WA NINGS
SAFETY WA NINGSSAFETY WA NINGS
SAFETY WA NINGS
All information hereafter detailed applies for the L-ACOUSTICS® 12XTi Coaxial Enclosure, designated in this
section as ‘‘the roduct’’.
1.1 Symbol descri tion
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
pro imity to the product.
In addition, the product may also be damaged.
The CAUTION symbol notifies the user about information to prevent possible product damage.
The IMPORTANT symbol is a notification of an important recommendation of use.
1.2 Im ortant safety instructions
1. Read this manual
2. Heed all safety warnings
3. Follow all instructions
4. The user should never incor orate equi ment or accessories not a roved by L-ACOUSTICS®
5. Sound Levels
Sound systems are capable of producing high Sound Pressure Levels which can be dangerous and
potentially cause hearing damage especially when e posed to them over a long period of time.
Do not stay within close pro imity of the loudspeakers when operating.
6. Heat
Do not operate the product near any heat source, such as radiators or other devices.
!
WARNING
!
IMPORTANT
!
CAUTION
!
WARNING
!
CAUTION

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7. Water and moisture
Even if the product is weather-resistant, it can not be e posed to moisture (rain, sea spray, shower,
steam) for a long period of time, nor put in direct contact or partially immersed in water. This would
cause irreversible damage to e posed components.
8. System Parts and Rigging ins ection
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Any part showing any sign of defect must immediately be put aside and withdrawn from use to be
inspected by qualified service personnel.
9. Mounting instructions
Do not place the product on an unstable cart, stand, tripod, bracket, or table. The product may fall
and be seriously damaged, and may cause serious human injury.
Any mounting of the product should follow the manufacturer’s instructions given in this manual,
and should use a mounting accessory recommended by the manufacturer.
10. Conditions which require immediate service
Servicing is required when the product has been damaged in any way such as:
•
••
•The product has been e posed to rain or moisture,
•The product was dropped or the enclosure is damaged,
•The product does not operate normally.
11. Manual
Keep this manual in a safe place during the product lifetime. This manual forms an integral part of the
product. Reselling of the product is only possible if the user 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.
!
IMPORTANT
!
WARNING
!
WARNING
!
CA
UTION
!
CAUTION

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1.3 EC declaration of conformity
L-ACOUSTICS®
13 rue Levacher Cintrat
Parc de la Fontaine de Jouvence
91462 Marcoussis Cede
France
States that the following product:
Loudspeaker enclosure, 12XTi
Is in conformity with the provisions of:
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC
Applied rules and standards:
EN ISO 12100-1: 2004 (Mechanical Safety)
EN60065 (Electrical Safety)
Established at Marcoussis, France
November 10th, 2009
Christophe Pignon

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2CON
CONCON
CONTENTS
TENTSTENTS
TENTS
1 SAFETY WARNINGS 1
1.1 Symbol description ............................................................................................................................................1
1.2 Important safety instructions..............................................................................................................................1
1.3 EC declaration of conformity .............................................................................................................................3
2 CONTENTS 4
3 INTRODUCTION 5
3.1 Welcome to L-ACOUSTICS®............................................................................................................................5
3.2 Unpacking .........................................................................................................................................................5
4 XTi ARCHITECTURAL SERIES 6
5 12XTi COAXIAL ENCLOSURE 8
6 INSTALLATION 9
6.1 Flying or stacking the 12XTi...............................................................................................................................9
6.2 Connecting speakers .........................................................................................................................................9
7 OPERATION 11
7.1 System configuration........................................................................................................................................11
7.2 “FULL RANGE” mode.....................................................................................................................................11
7.2.1 Description.......................................................................................................................................11
7.2.2 Connecting the 12XTi to the LA4.....................................................................................................11
7.2.3 [12XTP_FR], [12XTP_FI], and [12XTP_MO] presets........................................................................12
7.3 “HIGH-PASS” mode........................................................................................................................................12
7.3.1 Description.......................................................................................................................................12
7.3.2 Connecting the 12XTi to the LA4.....................................................................................................12
7.3.3 [12XTP_FR_100], [12XTP_FI_100], and [12XTP_MO_100] presets.................................................13
7.4 “HYBRID’’ mode.............................................................................................................................................13
7.4.1 Description.......................................................................................................................................13
7.4.2 Connecting the 12XTi and SB118 to the LA4....................................................................................13
7.4.3 [12XTP_SB118] preset.....................................................................................................................14
8 CARE AND MAINTENANCE 15
8.1 Maintenance information .................................................................................................................................15
8.2 Testing procedure...........................................................................................................................................15
8.2.1 Check of transducer and enclosure acoustic behavior........................................................................15
8.2.2 Check of mechanical assembly and rigging parts................................................................................15
8.2.3 Check of e ternal aspect ..................................................................................................................15
8.3 Transducer service..........................................................................................................................................16
8.3.1 LF loudspeaker.................................................................................................................................16
8.3.2 HF diaphragm...................................................................................................................................16
8.4 Spare parts and recommended tools................................................................................................................17
9 SPECIFICATIONS 18

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3INT ODUCTION
INT ODUCTIONINT ODUCTION
INT ODUCTION
3.1 Welcome to L-ACOUSTICS®
Thank you for purchasing the L-ACOUSTICS® 12XTi Coaxial Enclosure.
This manual contains essential information on installing and operating the product correctly and safely. It is necessary to
read this manual carefully in order to become familiar with these procedures.
As art of a continuous evolution of techniques and standards, L-ACOUSTICS® reserves the right to
change the s ecifications of the roduct and the content of this manual without rior notice. Please check
the L-ACOUSTICS® web site at www.l-acoustics.com on a regular basis for latest u dates.
Should the product requires repair or if information about the warranty is needed, please contact an approved
L-ACOUSTICS® distributor. The address of the nearest distributor is available on the L-ACOUSTICS® web site.
3.2 Un acking
Carefully open the shipping carton and check the product for any noticeable damage. Each 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 initiate a
claim with the carrier for damage incurred during shipping. Be sure to save the carton and packing materials for the
carrier's inspection.

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i A CHITECTU AL SE IES
A CHITECTU AL SE IESA CHITECTU AL SE IES
A CHITECTU AL SE IES
The L-ACOUSTICS® 12XTi enclosure is the mid-sized model within the XTi Architectural Series and operates
over the 55 Hz to 20 kHz frequency bandwidth. This response can be e tended down to 32 Hz with the addition of the
L-ACOUSTICS® SB118 subwoofer.
The system approach developed by L-ACOUSTICS® for the XTi series consists of the elements needed to fully take
advantage of the possible configurations and optimize the system. The main components of the system are (see also
Figure 1):
8XTi *  Passive compact coa ial enclosure
12XTi *  Passive multipurpose coa ial enclosure
ETR8XTi *  Mounting accessory for the 8XTi enclosure
ETR12XTi *  Mounting accessory for the 12XTi enclosure
EMBi *  Pole mount socket for the 8XTi and 12XTi enclosures
SB118  Subwoofer enclosure
LA4  Amplified controller
LA NETWORK MANAGER  Remote control software
SOUNDVISION  Acoustical and mechanical modeling software
* Available in two standard colors: Grey Brown RAL 8019
®
or Pure White RAL 9010
®
(refer to the 8XTi and 12XTi spec sheets).
The XTi series components are compatible with standard L-ACOUSTICS® accessories. These accessories include the
L-ACOUSTICS® SP.7, SP10, and SP25 loudspeaker cables with respective lengths of 0.7 m/2 ft,
10 m/30 ft, and 25 m/80 ft. These cables allow connection of the 8XTi and 12XTi enclosures to the LA4 amplified
controller. Each cable is a 4-conductor cable with 4 mm2 conductor cross-section (13 SWG, 11 AWG) and features
4-point Speakon® connectors.
The 8XTi and 12XTi are driven and powered by the L-ACOUSTICS® LA4 amplified controller. These controllers
ensure intelligent protection, filtering, and equalization of the enclosures. Four channels of amplification are provided
along with the OEM factory preset libraries, ensuring the optimization and performance of the systems within the limits
of the recommended configurations.
Each system design configuration should first be modeled and studied using the L-ACOUSTICS® SOUNDVISION
software. The software predictions are based on the preset parameters stored in the amplified controllers.
Up to 253 amplified controllers can be interconnected and monitored through the proprietary L-ACOUSTICS®
L-NET network using the L-ACOUSTICS® LA NETWORK MANAGER software.
Detailed description on using the LA4 amplified controller, SOUNDVISION and LA NETWORK MANAGER softwares
is beyond the scope of this manual. Please, refer to the appropriate documentation available on the
L-ACOUSTICS® web site at www.l-acoustics.com.

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Figure 1: XTi series com onents
12XTi
8XTi
ETR8XTi
ETR12XTi
EMBi
SB118
SOUNDVISION
LA NETWORK MANAGER
LA4
SP10
SP.7
SP25

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i COAXIAL ENCLOSU E
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The L-ACOUSTICS® 12XTi enclosure contains a 3’’ diaphragm compression driver coa ially loaded (for HF
directivity control) by an 12’’ low frequency transducer mounted in a bass-refle 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 12XTi enclosure is
8 ohms.
The coa ial transducer arrangement produces a 90° a i-symmetric directivity output along with a smooth tonal
response free of secondary lobes over the entire frequency range.
The wedge-shaped cabinet design makes the 12XTi perfectly suited to all stacked sound reinforcement applications.
The cabinet can also be pole, wall, or ceiling-mounted.
The 12XTi cabinet is made of high grade Baltic birch plywood with remarkable mechanical and acoustical properties for
improved long term durability.
Figure 2: The 12XTi enclosure
4 inserts with screws
(OMNIMOUNT
®
)
Grill
Wedge
-
sha ed
cabinetry
Safety insert
Connector late
2
inserts with screws
(ETR12XTi or EMBi)