L-Acoustics 8XTi User manual

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VERSION 1.0
VERSION 1.0VERSION 1.0
VERSION 1.0
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USER MANUAL
MANUEL D’UTILISATION
FR
EN

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LA4 LA4
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® 8XTi Coaxial Enclosure, designated in this section
as ‘‘the pro uct’’.
1.1 Symbol escription
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 Important safety instructions
1. Rea this manual
2. Hee all safety warnings
3. Follow all instructions
4. The user shoul never incorporate equipment or accessories not approve by L-ACOUSTICS®
5. Soun 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 an 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 an 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Any part showing any sign of defect must immediately be put aside and withdrawn from use to be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. Con itions which require imme iate 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
!
CAUTION
!
C
AUTION

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1.3 EC eclaration 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, 8XTi
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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2CONTE
CONTECONTE
CONTENTS
NTSNTS
NTS
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 8XTi COAXIAL ENCLOSURE 8
6 INSTALLATION 9
6.1 Flying or stacking the 8XTi ................................................................................................................................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 8XTi to the LA4.......................................................................................................11
7.2.3 [8XT_FR], [8XT_FI], and [8XT_MO] presets ...................................................................................12
7.3 “HIGH-PASS” mode........................................................................................................................................12
7.3.1 Description.......................................................................................................................................12
7.3.2 Connecting the 8XTi to the LA4.......................................................................................................12
7.3.3 [8XT_FR_100], [8XT_FI_100], and [8XT_MO_100] presets.............................................................13
7.4 “HYBRID’’ mode.............................................................................................................................................13
7.4.1 Description.......................................................................................................................................13
7.4.2 Connecting the 8XTi and SB118 to the LA4......................................................................................13
7.4.3 [8XT_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 driver or 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® 8XTi 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 part of a continuous evolution of techniques an stan ar s, L-ACOUSTICS® reserves the right to
change the specifications of the pro uct an the content of this manual without prior notice. Please check
the L-ACOUSTICS® web site at www.l-acoustics.com on a regular basis for latest up ates.
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 Unpacking
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® 8XTi enclosure is the most compact model within the XTi Architectural Series and
operates over the 65 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 components
12XTi
8XTi
ETR8XTi
ETR12XTi
EMBi
SB118
SOUNDVISION
LA NETWORK MANAGER
LA4
SP10
SP.7
SP25

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i COAXIAL ENCLOSU E
COAXIAL ENCLOSU E COAXIAL ENCLOSU E
COAXIAL ENCLOSU E
The L-ACOUSTICS® 8XTi enclosure contains a 1.5’’ diaphragm compression driver coa ially loaded (for HF
directivity control) by an 8’’ 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 8XTi enclosure is
8 ohms.
The coa ial transducer arrangement produces a 100° 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 8XTi perfectly suited to all stacked sound reinforcement applications. The
cabinet can also be pole, wall, or ceiling-mounted.
The 8XTi cabinet is made of high grade Baltic birch plywood with remarkable mechanical and acoustical properties for
improved long term durability.
Figure 2: The 8XTi enclosure
4 inserts with screws
(OMNIMOUNT
®
)
Grill
We ge
-
shap
e cabinetry
Safety insert
Connector plate
2
inserts with screws
(ETR8XTi or EMBi)

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6INSTALLATION
INSTALLATIONINSTALLATION
INSTALLATION
6.1 Flying or stacking the 8XTi
The inserts and the wedge-shaped cabinet design of the 8XTi enclosure (Figure 2) allow various setups such as:
•
••
•Wall or ceiling-mounting using the L-ACOUSTICS® ETR8XTi mounting accessory.
•
••
•Wall or ceiling-mounting using the OMNIMOUNT® 30.0 SERIES mounting accessories.
•
••
•Pole mounting using the L-ACOUSTICS® EMBi 35 mm/1.4 inch socket.
•
••
•Stacking with two fi ed angle settings of 30° and 40° with regard to the vertical.
Refer to the “XTi’’ rigging proce ures manual before installing an enclosure.
6.2 Connecting speakers
The 8XTi enclosure is driven and powered by the dedicated L-ACOUSTICS® LA4 amplified controller. Each LA4 amp
channel can drive one or two (in parallel) 8XTi enclosures. For more details, please, refer to the “LA4’’ user manual
also available on the L-ACOUSTICS® web site at www.l-acoustics.com.
The 8XTi enclosure is equipped with two 4-point Speakon® connectors wired in parallel, allowing connection with a
second 8XTi enclosure in parallel using one of the L-ACOUSTICS® SP.7, SP10, or SP25 cables.
The same cables are recommended to connect the 8XTi enclosure to the LA4 amplified controller (see Figure 1 and
Figure 3).
A ma imum of two 8XTi enclosures can be connected per LA4 output channel.
The L-ACOUSTICS® wiring convention is as follows:
Speakon® connector labels Connection to trans ucers
1+ IN +
1- IN -
2+ Not used
2- Not used
!
CAUTION
!
WARNING

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Figure 3: Connecting two 8XTi in parallel to the LA4 amp channel #1
To ensure both high performance and safety, L-ACOUSTICS® recommends the e clusive use of
high-quality, fully insulated speaker cables made of stranded copper wire.
In order to preserve a high damping factor it is desirable to keep loudspeaker cables as short as
possible and with a gauge offering low resistance per unit length.
The following table provides information regarding the recommended length versus wire cross-section. Two cases are
possible depending on the impedance load connected to the LA4 (8 Ω for a single 8XTi enclosure, 4 Ω for two 8XTi
enclosures in parallel):
Table 1: Maximum cable length versus con uctor cross-section for Damping Factor > 20
Cross-section Length for one 8XTi (8 Ω loa ) Length for two 8XTi (4 Ω loa )
mm2 SWG AWG m ft m ft
2.5 15 13 30 100 15 50
4 13 11 50 160 25 80
6 11 9 74 240 37 120
10 9 7 120 390 60 195
According to the calculation in Table 1, one SP25 cable (4 mm², 25 m) can be used to power two 8XTi in parallel (4 Ω
load) with a damping factor still greater than 20.
SP.7, SP10, or SP25
SP.7,
SP10,
or SP25
!
IMPORTANT

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7OPE ATION
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OPE ATION
7.1 System configuration
The choice of a system configuration should be the result of an electro-acoustic study conducted by an e pert (System
Engineer or Audio Consultant). However, this will not be discussed here as sound-design aspects are beyond the scope
of this manual. This study can rely on the simulations modeled in SOUNDVISION software, yielding electro-acoustic
predictions which take into account the enclosures’ manufacturer data and particular situational usage, as well as the
projected environment.
Three operation modes (“FULL RANGE”, “HIGH-PASS”, and “HYBRID”), each one associated with a set of factory
presets, will allow building all the common configurations (C, LR, LCR, distributed…).
The 8XTi enclosures can be used as a standalone system in the “FULL RANGE’’ mode or in combination with
subwoofers in the “HIGH-PASS’’ and “HYBRID’’ modes.
For each mode a distinction is drawn between ‘‘FRONT’’, ‘‘FILL’’, and ‘‘MONITOR’’ presets as they respectively
match front-of-house, distributed, and half-space loading applications.
•The LA4 output channel assignment varies with the preset selected by the user.
•ALWAYS check that the 8XTi enclosures are connected to correct LA4 output channels before
operating.
Note: The latest version of the preset library can be supplied by an L-ACOUSTICS® authorized representative and is
also downloadable from the L-ACOUSTICS® web site at www.l-acoustics.com.
7.2 “FULL RANGE” mo e
7.2.1 Description
In ‘‘FULL RANGE’’ mode the 8XTi enclosures are used in standalone configurations within their nominal bandwidth
(65 Hz – 20 kHz) for applications not requiring low frequency e tension.
7.2.2 Connecting the 8XTi to the LA4
Each 8XTi enclosure must be connected to an LA4 output channel ranging from channel 1 through 4. An additional
8XTi enclosure can be connected in parallel with each of the first ones. Therefore, a single LA4 amplified controller can
drive up to eight 8XTi enclosures (see Figure 4).
Note: The system resources are optimized for four or eight 8XTi per LA4.
Figure 4: Eight 8XTi enclosures connecte to an LA4 controller
IN A
IN B
OUT 2 (IN A)
OUT 1
(IN A)
OUT 3 (IN B)
OUT 4
(IN B
)
!
IMPORTANT
This
figure
is a
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does not represent
a valid configuration.
!
CAUTION

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7.2.3 [8XT_FR], [8XT_FI], an [8XT_MO] presets
The [8XT_FR] ‘‘FRONT’’ preset features LF and HF shelving EQ for standalone FOH applications without subwoofers.
The [8XT_FI] ‘‘FILL’’ preset results in a ‘‘flat’’ contour in free field conditions for use in speech reinforcement, classical
music, or close pro imity fill applications.
The [8XT_MO] ‘‘MONITOR’’ preset results in a ‘‘flat’’ contour in half-space loading conditions for floor monitoring, wall,
or ceiling-mounted applications.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the desired preset.
Refer to the ‘‘LA4’’ user manual for additional instructions. The presets are also selectable using the LA NETWORK
MANAGER software (refer to the ‘‘LA NETWORK MANAGER’’ user manual). The accessible parameters in ‘‘FULL
RANGE’’ mode are shown in the following chart:
Table 2: Accessible parameters in ‘‘FULL RANGE’’ mo e
Accessible (O) and blocked (X) parameters
LA4 Inputs/Outputs
Elements to connect Preset
assignments* Mute Gain Delay Polarity
IN A Input signal A IN_A X O O O
IN B Input signal B IN_B X O O O
OUT 1 8XTi enclosure PA_A O O O O
OUT 2 8XTi enclosure PA_A O O O O
OUT 3 8XTi enclosure PA_B O O O O
OUT 4 8XTi enclosure PA_B O O O O
* IN: input signal. A, B: channel A, B. PA: passive enclosure.
7.3 “HIGH-PASS” mo e
7.3.1 Description
In ‘‘HIGH-PASS’’ mode the 8XTi enclosures are 100 Hz high-pass filtered to allow using them along with the dedicated
complimentary SB118 subwoofers. The bandwidth of the system is e tended down to 32 Hz. The recommended ratio
is two 8XTi for one SB118.
7.3.2 Connecting the 8XTi to the LA4
Each 8XTi enclosure must be connected to an LA4 output channel ranging from channel 1 through 4. An additional
8XTi enclosure can be connected in parallel with each of the first ones. Therefore a single LA4 amplified controller can
drive up to eight 8XTi enclosures (see Figure 5).
Note: The system resources are optimized for four or eight 8XTi per LA4.
Figure 5: Eight 8XTi enclosures connecte to an LA4 controller
IN A
IN B
OUT 2 (IN A)
OUT 1
(IN A)
OUT 3 (IN B)
OUT 4
(IN B)
!
IMPORTANT
This
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does not represent
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7.3.3 [8XT_FR_100], [8XT_FI_100], an [8XT_MO_100] presets
The [8XT_FR_100] ‘‘FRONT’’ preset features a HF shelving EQ and a 100 Hz high-pass filter for FOH applications with
subwoofers.
The [8XT_FI_100] ‘‘FILL’’ preset results in a ‘‘flat’’ contour down to 100 Hz in free field conditions for use in speech
reinforcement, classical music, or close pro imity fill applications.
The [8XT_MO_100] ‘‘MONITOR’’ preset results in a ‘‘flat’’ contour down to 100 Hz in half-space loading conditions for
floor monitoring, wall, or ceiling-mounted applications.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the desired preset.
Refer to the ‘‘LA4’’ user manual for additional instructions. The presets are also selectable using the LA NETWORK
MANAGER software (refer to the ‘‘LA NETWORK MANAGER’’ user manual). The accessible parameters in
‘‘HIGH-PASS’’ mode are shown in the following chart:
Table 3: Accessible parameters in ‘‘HIGH-PASS’’ mo e
Accessible (O) and blocked (X) parameters
LA4 Inputs/Outputs
Elements to connect Preset
assignments* Mute Gain Delay Polarity
IN A Input signal A IN_A X O O O
IN B Input signal B IN_B X O O O
OUT 1 8XTi enclosure PA_A O O O O
OUT 2 8XTi enclosure PA_A O O O O
OUT 3 8XTi enclosure PA_B O O O O
OUT 4 8XTi enclosure PA_B O O O O
* IN: input signal. A, B: channel A, B. PA: passive enclosure.
Note: The complimentary SB118 subwoofers must be connected to additional LA4 or LA8 amplified controllers. Please
refer to the ‘‘SB118’’ user manual.
7.4 “HYBRID’’ mo e
7.4.1 Description
In ‘‘HYBRID’’ mode the 8XTi and SB118 enclosures are connected to the same LA4 amplified controller thus limiting
the number of required units. The bandwidth of the system is e tended down to 32 Hz. The recommended ratio is two
8XTi for one SB118.
7.4.2 Connecting the 8XTi an SB118 to the LA4
The 8XTi and SB118 enclosures connect to the LA4 outputs as follows: channels 1 and 3 are dedicated to one SB118
enclosure each, and channels 2 and 4 to 8XTi enclosures. Each 8XTi enclosure can be paired in parallel with an
additional 8XTi. Therefore, a single LA4 amplified controller can drive up to four 8XTi and two SB118 enclosures (see
Figure 6).
A ma imum of one SB118 enclosure can be connected per LA4 output channel 1 or 3.
Note: The system resources are optimized for two or four 8XTi and two SB118 per LA4.
!
CAUTION

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Figure 6: Four 8XTi an two SB118 enclosures connecte to an LA4 controller
7.4.3 [8XT_SB118] preset
The [8XT_SB118] preset features a HF shelving EQ for FOH applications. The crossover frequency between the LF
and HF sections is set at 100 Hz.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the [8XT_SB118]
preset. Refer to the ‘‘LA4’’ user manual for additional instructions. The preset is also selectable using the
LA NETWORK MANAGER software (refer to ‘‘LA NETWORK MANAGER’’ user manual). The accessible
parameters in ‘‘HYBRID’’ mode are shown in the following chart:
Table 4: Accessible parameters in ‘‘HYBRID’’ mo e
Accessible (O) and blocked (X) parameters
LA4 Inputs/Outputs
Elements to connect Preset
assignments* Mute Gain Delay Polarity
IN A Input signal A IN_A X O O O
IN B Input signal B IN_B X O O O
OUT 1 SB118 enclosure SB_A O O O O
OUT 2 8XTi enclosure PA_A O O O X
OUT 3 SB118 enclosure SB_B O O O O
OUT 4 8XTi enclosure PA_B O O O X
* IN: input signal. A, B: channel A, B. PA: passive enclosure. SB: subwoofer enclosure.
IN A
OUT 2 (IN A)
OUT 1
(IN A)
OUT 3 (IN B)
IN B
OUT 4
(IN B)
!
IMPORTANT
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8CA E AND MAINTENANCE
CA E AND MAINTENANCECA E AND MAINTENANCE
CA E AND MAINTENANCE
8.1 Maintenance information
The L-ACOUSTICS® 8XTi enclosure is a technical product designed for various, intensive indoor and outdoor sound
reinforcement applications. To fulfill such demanding conditions L-ACOUSTICS® has designed the 8XTi enclosure with
high-grade and reliable components:
•Weather-resistant transducers.
•Baltic birch plywood cabinet.
•Polyester powder-coated steel grill covered by a non biodegradable “Airnet” fabric.
•O idation-resistant screws and rigging points.
However, in order to ensure product performance and safety, it is essential to frequently inspect the 8XTi cabinet and
its internal components. These checks need to be done on a regular basis depending on the conditions of system use.
The testing procedure consists of three steps as described in section 8.2. If a transducer needs to be repaired or
replaced, apply the corresponding procedure in section 8.3.
8.2 Testing proce ure
8.2.1 Check of trans ucer an enclosure acoustic behavior
Connect a sweep frequency generator to the active input of the LA4 amplified controller. Apply a sweep from 65 Hz to
20 kHz with a maximum voltage of 0.2 volts (-12 dBu, -14 dBV): the sound should remain pure and free of any
unwanted noise. If not, check the mechanical assemblies and, if necessary, contact an L-ACOUSTICS® authorized
representative to repair or replace the damaged components (see also section 8.3).
0.2 volts is a ma imum value that can generate very high sound levels at given frequencies.
Use ear protection to set the sound level before testing.
Whenever a transducer is reconnected, wiring polarity should be checked using a phase checking device. If a transducer
is out of phase, invert the cables connected to its electrical sockets. The connecting procedures are given in section 8.3.
8.2.2 Check of mechanical assembly an rigging parts
Inspect the general aspect of assembly and check that screws are locked tight (on loudspeaker, diaphragm, and grill).
Check the quality of contact and locking action of the Speakon® sockets.
8.2.3 Check of external aspect
Remove the dust from the grill with a vacuum device. If needed, repaint the cabinet.
If paint is applied, protect mechanical parts.
Do not apply paint to the front grill fabric as it could fill the fabric holes and deteriorate the acoustic
transparency of the material.
!
IMPORTANT
!
WARNING

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8.3 Trans ucer service
8.3.1 LF lou speaker
If damaged, the 8” LF loudspeaker should be removed and repaired or replaced as described below. Recone kits are
available. Alternatively, reconing can be performed by L-ACOUSTICS® (see section 8.4).
LF lou speaker removing proce ure
1. Put the enclosure on a flat surface with grill facing the user.
2. Remove the grill: remove the 4 Tor ® screws (T30) located on both sides, lift up the grill (flat screwdriver).
3. Remove the loudspeaker coa ial assembly: remove the 4 he screws (4 mm) with split and flat washers,
lift up the loudspeaker (flat screwdriver).
4. Place the loudspeaker coa ial assembly in front of the enclosure with LF cone facing the flat surface.
5. Disconnect the four cables (2 red and 2 black ones) from the transducers electrical sockets.
6. Remove both he screws (4 mm) located on the HF heat dissipation plate.
7. Remove the HF assembly.
LF lou speaker replacing proce ure
1. Place the LF loudspeaker in front of the enclosure with cone facing the flat surface, LF electrical connectors
towards the user (in this way, the shorter HF cables cannot reach the LF sockets).
2. Install the HF assembly on the LF loudspeaker, red-labeled electrical pins on the same side, and screw in both
he screws through the HF heat dissipation plate (he 4 mm, 5 N.m/45 in.lbf, thread-locker).
3. Connect the four cables to the transducers electrical sockets: both short cables connect to the HF
sockets an both long cables to the LF sockets (for both transducers: re cable to the re -labele pin
an black cable to the unlabele pin).
4. Install the loudspeaker assembly in the enclosure and screw in the 4 he screws with split and flat washers:
into each he screw insert a split washer and then a flat washer (following this sequence) and screw in the
assembly to one of the four locations (he 4 mm, 3 N.m/27 in.lbf).
5. Install the grill (logo oriented towards vents) and screw in the 4 Tor ® screws (T30, 3 N.m/27 in.lbf).
8.3.2 HF river or iaphragm
If damaged, the HF diaphragm or the full HF driver should be removed and replaced as described below.
HF river or iaphragm removing proce ure
1. Put the enclosure on a flat surface with grill facing the user.
2. Remove the grill: remove the 4 Tor ® screws (T30) located on both sides, lift up the grill (flat screwdriver).
3. Remove the loudspeaker coa ial assembly: remove the 4 he screws (4 mm) with split and flat washers,
lift up the loudspeaker (flat screwdriver).
4. Place the loudspeaker coa ial assembly with LF cone facing the flat surface.
5. Disconnect both cables (1 red and 1 black ones) from the HF driver electrical sockets.
6. To remove the diaphragm only: unscrew the 4 Pozidriv® screws (PZ.2) from the back cover of the driver,
and pull the diaphragm out from the magnet.
To remove the full HF driver: unscrew both he screws (4 mm) from the heat dissipation plate, remove the
HF assembly from the LF speaker, unscrew both Tor ® screws (T30) located on the rear face of the heat
dissipation plate, remove the driver from the plate.

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HF river or iaphragm replacing proce ure
1. To install a full HF driver:
a. Install the new driver on the heat dissipation plate (if necessary, add a few additional thermal paste
above the old thermal paste on the driver in a continuous circular way).
b. Screw in both Tor ® screws on the rear face of the plate (T30, 5 N.m/45 in.lbf, thread-locker).
c. Install the HF assembly on the LF speaker and screw in both he screws through the plate (he 4 mm, 5
N.m/45 in.lbf, thread-locker).
To install a diaphragm only:
a. Ensure that the voice coil gap on the driver is free from any particles. If necessary, clean out the gap by
using 2-sided tape.
b. Install the new diaphragm in the gap.
c. Screw in the 4 Pozidriv® screws on the back cover of the driver (PZ.2, 3 N.m/27 in.lbf). Note: Balance
the torques between screws at every moment while screwing in so as to properly center the diaphragm.
2. Connect both cables to both new diaphragm electrical sockets: connect the SHORT re cable to the re -
labele pin an the SHORT black cable to the unlabele pin.
3. Install the loudspeaker assembly in the enclosure and screw in the 4 he screws with split and flat washers:
into each he screw insert a split washer and then a flat washer (following this sequence) and screw in the
assembly to one of the four locations (he 4 mm, 3 N.m/27 in.lbf).
4. Install the grill (logo oriented towards vents) and screw in the 4 Tor ® screws (T30, 3 N.m/27 in.lbf).
8.4 Spare parts an recommen e tools
Table 5: Main available spare parts
HP BM12
1.5’’ driver – 8 Ω
HS BM12
Diaphragm for 1.5’’driver – 8 Ω
HP PH84
8’’ coa ial speaker – 8 Ω
HS PH84
8’’ recone kit
HR PH84
8’’ recone kit including factory service
SE GRL8XTI
Complete front grill (black)
SE GRL8XTIW
Complete front grill (Pure White RAL 9010®)
Table 6: Recommen e tools for service
Torque wrench (N.m or in.lbf)
PZ.2 Pozidriv® bit
4 mm he bit
T30 Tor ® bit
4 mm flat screwdriver
Medium-strength thread-locker (blue)
Thermal paste

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9SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
Reference 8XTi
Frequency response
Usable bandwidth (-10 dB) 65 Hz - 20 kHz ([8XT_FR] preset)
Maximum SPL 1 127 dB ([8XT_FI] preset)
Nominal irectivity (-6 B) 100°, a i-symmetric
Trans ucers
LF 1 8’’ weather-resistant transducer mounted in a bass-refle tuned enclosure
HF 1 1.5’’ diaphragm compression driver coa ially-loaded by the 8’’ LF transducer
Filtering Passive 3rd order crossover network
Nominal impe ance 8 Ω
Long term RMS power han ling capacity
280 W ([8XT_FI] preset)
Connectors 2 4-point Speakon® (wired in parallel)
Dimensions (H x W x D) 421 250 269 mm / 16.6 9.8 10.6 inch
Weight 11 kg / 24 lbs
Flying  L-ACOUSTICS® ETR8XTi adjustable mounting accessory for wall or
ceiling-mounting (available separately).
 Four predrilled inserts with screws for wall or ceiling-mounting using
the OMNIMOUNT® 30.0 SERIES mounting accessories.
 Safety eyebolt insert.
Stacking  Two fi ed angle settings of 30° and 40° with regard to the vertical.
 L-ACOUSTICS® EMBi 35 mm/1.4 inch socket for pole mounting
(available separately).
External structure
Material 15 mm Baltic birch plywood.
Standard finish Grey Brown RAL 8019® (8XTi) or Pure White RAL 9010® (8XTiW).
Custom finish RAL code on special order.
Front Polyester powder-coated steel grill, acoustically transparent “Airnet” fabric.
Rigging Polyester powder-coated steel.
1
Peak level measured at 1m under free field conditions using 10 dB crest factor pink noise with specified preset and corresponding EQ settings.