LT6P - LT8P - LT10P - LT12P
Passive Loudspeakers
USER MANUAL
This marking shown on the product or its literature, indicates that it should not be disposed with other household wastes at the end of
its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this
from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources. Household users should
contact either the retailer where they purchased this product, or their local government oce, for details of where and how they can
take this item for environmentally safe recycling. Business users should contact their supplier and check the terms and condions of the
purchase contract. This product should not be mixed with other commercial wastes for disposal.
The lightning ash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure, that may be of sucient magnitude to constute a risk of electric shock to persons.
The exclamaon point within an equilateral triangle is intended to alert the user to the presence of important operang and maintenance
(servicing) instrucons in the literature accompanying the appliance.
The informaon contained in this publicaon has been carefully prepared and checked. However no responsibility will be taken for any errors. All
rights are reserved and this document cannot be copied, photocopied or reproduced in part or completely without written consent being
obtained in advance from CELECTRON. CELECTRON reserves the right to make any aesthetic, functional or design modification to any of its
products without any prior notice. CELECTRON assumes no responsibility for the use or application of the products or circuits described here in.
INDEX
TECHNICAL SPECIFICATIONS
................. 3
FREQUENCY RESPONSE ..................... 3
DIMENSIONS AND FLYING POINTS ............. 4
INPUT PANEL (FIG.1) ........................ 5
CONNECTIONS (FIG.2) ...................... 5
CONFIGURATIONS (FIG.3) ................... 6
SAFETY AND PRECAUTIONS .................. 7
IN CASE OF FAULT .......................... 7
TROUBLESHOOTING ........................ 7
CE CONFORMITY ........................... 7
PACKAGING, SHIPPING AND COMPLAINT ....... 7
WARRANTY AND PRODUCTS RETURN .......... 8
INSTALLATION AND DISCLAIMER .............. 8
GENERAL INFORMATION ................... 9
INSTRUCTIONS (FIG. 1 / 2 / 3) ..................9
3
FREQUENCY RESPONSE
LT6P
MODEL LT6P LT8P LT12P
System type 2-way vented enclosure 2-way vented enclosure 2-way vented enclosure
High Frequency Device 1’’ compression driver 1" VC 1’’ compression driver 1" VC 1’’ compression driver 1.35" VC
Low Frequency Device 8” woofer with 1.5" VC 10” woofer with 2" VC 12” woofer with 2.5" VC
Angular Coverage 60° H x 40° V 90° H x 60° V 90° H x 60° V
Nominal Impedance
Power connuous (AES)
Power program
8 ohm
4
00 W
800 W
Power peak
8 ohm
200 W
400 W
800 W
8
ohm
3
00 W
600 W
Frequency Response
Sensivity (1 W / 1 m)
Max SPL at 1mt (peak)
Crossover Frequency
Connectors
Construcon
Cabinet Colour
Finish
Flying System
Handles
Mounng Pole
Weight
Dimensions (W x H x D)
2-way vented enclosure
1’’ neodymium tweeter
6.5” woofer with
1" VC
60° H x 40° V
8 ohm
150 W
300 W
600 W
75 Hz - 20 kHz
90 dBspl
114 dBspl
2400 Hz
I
NPUT, LINK:
Neutrik SPEAKON© (NL4MP)
6.3mm JACK female socket
Plywood
Black or White
An-scratch Paint
1 x M4 top, 2 x M4 boom,
2 x M6 rear
-
1 x boom
4.9 kg (10.8 lb)
204 x 295 x 223 mm
70 Hz - 20 kHz
94 dBspl
121 dBspl
2400 Hz
I
NPUT, LINK:
Neutrik SPEAKON© (NL4MP)
Plywood
Black or White
An-scratch Paint
4 x M8 top and boom,
3 x M6 rear
1 x rear
1 x boom, dual angle
7.5 kg (16.5 lb)
220 x 442 x 260 mm
1200 W
60 Hz - 20 kHz
97 dBspl
126 dBspl
2200 Hz
INPUT, LINK:
Neutrik SPEAKON© (NL4MP)
Plywood
B
lack or White
An-scratch Paint
4 x M10 top and boom
3 x M6 rear
1 x rear
1 x boom, dual angle
11.5 kg (25.4 lb)
340 x 515 x 310 mm
1600 W
50 Hz - 20 kHz
99 dBspl
130 dBspl
2200 Hz
I
NPUT, LINK:
Neutrik SPEAKON© (NL4MP)
Plywood
Black or White
An-scratch Paint
4 x M10 top and boom
3 x M6 rear
2 x sides
1 x boom, dual angle
15.5 kg (34.2 lb)
380 x 595 x 360 mm
TECHNICAL SPECIFICATIONS
LT10P
LT10P
LT8P
LT12P
10k
5k
2k1k
500
200
100
50
40
20kHz
110
dBSPL
100
90
80
70
60
10k
5k
2k1k
500
200
100
50
40
20kHz
110
dBSPL
100
90
80
70
60
10k
5k
2k1k
500
200
100
50
40
20kHz
110
dBSPL
100
90
80
70
60
10k
5k
2k1k
500
200
100
50
40
20kHz
110
dBSPL
100
90
80
70
60
4
DIMENSIONS AND FLYING POINTS
29.5 cm
11.6"
22.3 cm
8.78"
20.4 cm
8.03"
M4 Flying points
M6 Flying Points
LT6 Pole adapter (supplied)
26.0 cm
10.2"
22.0 cm
8.66"
44.2 cm
17.4"
M8 Flying points
Dual Angle Mounng Pole
51.5 cm
20.3"
31.0 cm
12.2"
34.0 cm
31.0"
M10 Flying Points
Dual Angle
Mounng Pole
M6 Flying Points
M6 Flying Points
M10 Flying Points
Dual Angle
Mounng Pole
M6 Flying Points
36.0 cm
14.2"
59.5 cm
23.4"
38.0 cm
15.0"
5
INPUT PANEL (FIG.1)
CONNECTIONS (FIG.2)
LOUDSPEAKER LINE LOSSES
(maximum permissible line lengths for 0.5dB losses, voltage or spl)
8 ohm load 4 ohm load Wire secon
data
meter feet meter feet mm² AWG
50 164 25 82 4.0 12
30 100 15 50 2.5 14
20 66 10 33 1.5 16
INPUT - LINK
Neutrik NL2FX Speakon Cable Connector
INPUT - LINK
power Jack
p
- positive / red
sleeve - negative / black
1+
1-
20mm
0.8"
8mm
0.3"
RED
BLACK
posive / red
1+
1-
negative / black
6
CONFIGURATIONS (FIG.3)
RIGHT
single speaker
8 ohm load
LEFT
single speaker
8 ohm load
LT passive BASIC STEREO sound system
RIGHT
paralled speakers
4 ohm load
LEFT
paralled speakers
4 ohm load
LT passive DOUBLE PARALLEL STEREO sound system
7
SAFETY AND PRECAUTIONS
• CAUTION: before using this product read carefully the following safety instrucons. Take a look of this manual enrely and preserve it for
future reference.
When using any electric product, basic precauons should always be taken, including the following:
– To reduce the risk, close supervision is necessary when the product is used near children.
– Protect the apparatus from atmospheric agents and keep it away from water, rain and high humidity places.
– This product should be site away from heat sources such as radiators, lamps and any other device that generate heat.
– This product should be located so that its locaon or posion does not interfere with its proper venlaon and heang dissipaon.
– Care should be taken so that objects and liquids do not go inside the product.
– This product may be capable of producing sound levels that could cause
permanent hearing loss. Exposure to extremely high noise levels may cause
permanent hearing loss. Individuals vary considerably in suscepbility to noise-
induced hearing loss, but nearly everyone will lose some hearing if exposed
to sufficiently intense noise for a period of time. The U.S. Government’s
Occupational Safety and Health Administration (OSHA) has specified the
permissible noise level exposures shown in the following chart. According to
OSHA, any exposure in excess of these permissible limits could result in some
hearing loss. To ensure against potenally dangerous exposure to high sound
pressure levels, it is recommended that all persons exposed to equipment
capable of producing high sound pressure levels use hearing protectors while
the equipment is in operaon. Ear plugs or protectors in the ear canals or over
the ears must be worn when operang the equipment in order to prevent
permanent hearing loss if exposure is in excess of the limits set forth here. Keep
your's aenon that children and pets are more suscepble to excessive noise
levels.
IN CASE OF FAULT
• In case of fault or maintenance this product should be inspected only by qualied service personnel when:
– There is a aw either in the connecons or in the supplied connecng cables.
– Liquids have spilled inside the product.
– The product has fallen and been damaged.
– The product does not appear to operate normally or exhibits a marked change in performance.
– The product has been lost liquids or gases or the enclosure is damaged.
• Do not operate on the product, it has no user-serviceable parts inside, refer servicing to an authorized maintenance centre.
TROUBLESHOOTING
No Sound • Is the loudspeaker cable connected?
• Is the SPEAKON cable connector correctly inserted? turn it clockwise unl it clicks.
• Are you sure your power cable works properly? check it using a cable tester or replacing with a newone.
As soon as the music gets loud,
the high frequency shuts down
• The HF driver protecon trips to protect the HF driver from excessive signal: turn down the volume and
mid/high tone controls.
Distorted Sound
• Input signal level is too high. Turn down your level controls.
Dierent channel level • Check if are using a balanced cable for one channel and an unbalanced one for the other, as this would
cause a considerable dierence in channel levels.
• Be sure that your loudspeaker system is fully connected and both loudspeakers have the same
impedance.
Noise / Hum
• Enable GND LIFT buon on rear panel, if the problem persist press all GND LIFT buons for all system's
ampliers.
• Whenever possible, preferably use only balanced cables. Unbalanced lines may also be used but may result
in noise over long cable runs.
• Somemes it helps to plug all audio equipment into the same AC circuit so they share a common ground.
CE CONFORMITY
• Celectron products compl
y with directive 2004/108/EC (EMC), as stated in EN 55103-1 and EN 55103-2 standards and with directive
2006/95/CE (LVD), as stated in EN 60065 standard.
• Under the EM disturbance, the ratio of signal-noise will be changed above 10dB.
PACKAGING, SHIPPING AND COMPLAINT
• This unit package has been submitted to ISTA 1A integrity tests. We suggest you control the
unit conditions immediately after unpacking it.
• If any damage is found, immediately advise the dealer. Keep all unit packaging parts to allow inspection.
• Celectron is not responsible for any damage that occurs during shipment.
• Products are sold “delivered ex warehouse” and shipment is at charge and risk of the buyer.
• Possible damages to unit should be immediately notified to forwarder. Each complaint for package tampered with should be done within
eight days from product receipt.
Duraon Per Day
In Hours
Sound Level dBA
Slow Response
Typical
Example
8 90 Duo in small club
6 92
4 95 Subway Train
3 97
2 100 Very loud classical music
1.5 102
1 105 Trac noise
0.5 110
0.25 or less 115 Loudest parts at a rock concert
8
WARRANTY AND PRODUCTS RETURN
• Celectron products have operating warranty and comply their specifications, as stated by manufacturer.
• Celectron warrants all
materials, workmanship and proper operation of this product for a period of two years from the original date of
purchase. If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty
period, the owner should inform about these defects the dealer or the distributor, providing receipt or invoice of date of purchase and defect
detailed description. This warranty does not extend to damage resulting from improper installation, misuse, neglect or abuse. Celectron Electronic
will verify damage on returned units, and when the unit has been properly used and warranty is still valid, then the unit will be replaced or
repaired. Celectron Electronic is not responsible for any "direct damage" or "indirect damage" caused by product defectiveness.
INSTALLATION AND DISCLAIMER
• Celectron products have been expressly designed for audio application, with signals in audio range (20Hz to 20kHz). Celectron has no liability for
damages caused in case of lack of maintenance, modifications, improper use or improper installation non-applying safety instructions.
• The install
ation of these speakers is provided for indoors, in case of use outdoors be sure that the speakers are installed correctly in a
safe location protected from wind, rain and humidity. To avoid performance deterioration of mechanical, acoustics and electrical parts is not
advisable to leave these speakers exposed outdoors for a long period of time, so we suggest a temporary installation for the limited sound
events.
• The installation of these speakers is provided for floor or by means of specific stands able to support their weight. Therefore avoid
installation on unstable elements such as: furniture, chairs and vibrant surfaces as stages or other speakers without appropriate fix point
specifically designed to avoid speaker movement. Then avoid the use of inadequate supports, we suggest to use CELECTRON stands and
accessories only.
• In case of the speakers are provided of rigging points: DO NOT SUSPEND THE SPEAKERS FROM THE HANDLES, use exclusively these rigging points.
Consult professional rigger or structural engineers prior to suspending loudspeakers from a structure not intended for that use. Always know
the working load limit of the structure supporting the loudspeakers. Always make sure that the rigging hardware minimum rating is at least five
times the actual load, speakers and rigging hardware.
• Locate the speakers as far away as possible from radio or television receivers or other sensitive equipment. These speakers have a
strong magnetic field which can induce hum and noise into unshielded devices that are located nearby with consequent deterioration of
reception of image and sound.
• Celectron Electronic reserves the right to change these specifications at any time without notice.
• Celectron Electronic declines any liability for damages to objects or persons caused by lacks of maintenance, improper use, installation not
performed with safety precautions and at the state of the art.
GENERAL INFORMATION
Thank you for having chosen a CELECTRON product.
The LT Series by CELECTRON i
s an extended range of active and passive speaker systems with plywood cabinet
offering the renowned CELECTRON sound and a high-level performance in a reliable and affordable package. For the
construction of the cabinets we have used plywood, a very lightweight and durable material that makes moving and
installing these speakers very quick and easy. Strong, anti-scratch paint and steel grilles with an internal foam layer
provide proper protection for years of service. The dual-angle pole holder featured in LT8, LT10 and LT12 models
offers the possibility to obtain a more uniform coverage of the audience.
For the high frequency reproduction of LT Series we have designed wide-dispersion horns, able to provide constant
coverage for large audiences and detailed response with low distoron. The high-excursion woofers, together with
carefully tuned vented cabinets, oers an extended response with deep and ght basses.
4 passive models are available, featuring carefully designed crossover lters with HF electronic protecon. The choice
of black or white cabinet, built-in ying points and a wide range of accessories make them suitable for any kind of xed
installaon.
The LT loudspeaker systems can be combined with the SW subwoofers capable of providing the perfect low frequency
extension for each model of the series.
INSTRUCTIONS (FIG. 1 / 2 / 3)
1. INPUT (SPEAKON)
External amplier power input: this is the connector where you plug in the power cable coming from your power
amplier or powered mixer. The powered signal is ltered by an internal passive crossover that splits the power signal
into a low frequency secon, sent to the woofer, and a high frequency secon, sent to the tweeter/driver. The frequency
transion is around 2KHz. The INPUT has this pin connecon:
PIN1+ (or TIP): posive power signal (usually red wire)
PIN1- (or SLEEVE): negave power signal (usually black wire)
2. LINK (SPEAKON)
Output of the power signal to be sent to an another satellite loudspeaker. INPUT and LINK connectors are connected
in parallel.
CHOOSE THE AMPLIFIER POWER
We give you three power numbers: connuous, program and peak.
So these data suggest you can use any amplier with a power capability in the range between connuous and program,
but this rule is valid only if the amplier never clip any me.
Prevenng loudspeaker damage caused by clipping, that is likely the number one cause of damage, and assuming
you want to use the full capability of the loudspeaker, we recommend the use of an amplier with a built-in limiter to
prevent clipping, in this case the rated power capability must be in the range between connuous and program power
rang of the loudspeaker into the same nominal impedance (pically 4 or 8 ohms):
IMPORTANT: Clipping occurs when the signal at the output of any device in the system (not just the amplier) reaches its
maximum level. Proper operaon of a sound system includes being aware of the types of audio signals being reproduced,
controlling the output levels accordingly, and operang all the devices in the system so that no clipping occurs within
the signal chain.
9
Celectron Electronic Group
BBFY Industrial USA Inc
City of Industry - California
www.celectronaudio.com
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