LD LDGT10A Manuale utente
USER´S MANUAL
BEDIENUNGSANLEITUNG
MANUEL D`UTILISATION
MANUAL DE USUARIO
INSTRUKCJA OBSŁUGI
MANUALE D‘ USO
LD GT SERIES
ACTIVE PA SPEAKERS
LDGT10A / LDGT12A / LDGT15A
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You‘ve made the right choice!
We have designed this product to operate reliably over many years. LD Systems stands for this with its name and
many years of experience as a manufacturer of high-quality audio products.
Please read this User‘s Manual carefully, so that you can begin making optimum use of your LD Systems product
quickly.
You can find more information about LD SYSTEMS at our Internet site WWW.LD-SYSTEMS.COM
Introduction
Equipped with special woofers and a 1" Celestion HF driver, the active speakers of the GT series offer stunning
value for money in addition to a well defined and consistent audio playback.
The robust bass reflex cabinets are made from 15 mm MDF and are covered with a protective and attractive
looking, durable, textured Dura-Vinyl. In addition, the speakers offer a steel grille with honeycomb design, a 54°
monitor angle, as well as a boxing flange with two tilt levels.
Class-D digital power amplifiers are fitted with highly efficient switch-mode power supply. On the input side,
line-level and microphone inputs are available as XLR or 6.3 mm jacks. Protection circuits against overcurrent
and overvoltage provide reliable operation.
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LD GT SERIES
ACTIVE PA SPEAKER
LDGT10 A / LDGT12A / LDGT15A
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Avoid direct sunlight!
PREVENTIVE MEASURES:
1. Please read these instructions carefully.
2. Keep all information and instructions in a safe place.
3. Follow the instructions.
4. Observe all safety warnings. Never remove safety warnings or other information from the equipment.
5. Use the equipment only in the intended manner and for the intended purpose.
6. Use only sufficiently stable and compatible stands and/or mounts (for fixed installations). Make certain that wall
mounts are properly installed and secured. Make certain that the equipment is installed securely and cannot fall down.
7. During installation, observ e the applicable safety regulations for your country.
8. Never install and operate the equipment near radiators, heat registers, ovens or other sources of heat. Make certain
that the equipment is always installed so that is cooled sufficiently and cannot overheat.
9. Never place sources of ignition, e.g., burning candles, on the equipment.
10. Ventilation slits must not be blocked.
11. Do not use this equipment in the immediate vicinity of water (does not apply to special outdoor equipment -
in this case, observe the special instructions noted below. Do not expose this equipment to flammable materials,
fluids or gases.
12. Make certain that dripping or splashed water cannot enter the equipment. Do not place containers filled with
liquids, such as vases or drinking vessels, on the equipment.
13. Make certain that objects cannot fall into the device.
14. Use this equipment only with the accessories recommended and intended by the manufacturer.
15. Do not open or modify this equipment.
16. After connecting the equipment, check all cables in order to prevent damage or accidents, e.g., due to
tripping hazards.
17. During transport, make certain that the equipment cannot fall down and possibly cause property damage and
personal injuries.
18. If your equipment is no longer functioning properly, if fluids or objects have gotten inside the equipment or
if it has been damaged in anot her way, switch it off immediately and unplug it from the mains outlet (if it is a
powered device). This equipment may only be repaired by authorized, qualified personnel.
19. Clean the equipment using a dry cloth.
20. Comply with all applicable disposal laws in your country. During disposal of packaging, please separate
plastic and paper/cardboard.
21. Plastic bags must be kept out of reach of children.
FOR EQUIPMENT THAT CONNECTS TO THE POWER MAINS:
22. CAUTION: If the power cord of the device is equipped with an earthing contact, then it must be connected to
an outlet with a protective ground. Never deactivate the protective ground of a power cord.
23. If the equipment has been exposed to strong fluctuations in temperature (for example, after transport), do
not switch it on immediately. Moisture and condensation could damage the equipment. Do not switch on the
equipment until it has reached room temperature.
24. Before connecting the equipment to the power outlet, first verify that the mains voltage and frequency match
the values specified on the equipment. If the equipment has a voltage selection switch, connect the equipment to
the power outlet only if the equipment values and the mains power values match. If the included power cord or
power adapter does not fit in your wall outlet, contact your electrician.
25. Do not step on the power cord. Make certain that the power cable does not become kinked, especially at the
mains outlet and/or power adapter and the equipment connector.
26. When connecting the equipment, make certain that the power cord or power adapter is always freely
accessible. Always disconnect the equipment from the power supply if the equipment is not in use or if you want
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To prevent possible hearing damage, avoid listening at high volume levels over long periods of time.
Even exposure to short bursts of loud noise can result in hearing loss. Please keep the volume
constantly at a comfortable level.
Avoid direct sunlight!
SAFETY:
to clean the equipment. Always unplug the power cord and power adapter from the power outlet at the plug or
adapter and not by pulling on the cord. Never touch the power cord and power adapter with wet hands.
27. Whenever possible, avoid switching the equipment on and off in quick succession because otherwise this
can shorten the useful life of the equipment.
28. IMPORTANT INFORMATION: Replace fuses only with fuses of the same type and rating. If a fuse blows repea-
tedly, please contact an authorised service centre.
29. To disconnect the equipment from the power mains completely, unplug the power cord or power adapter
from the power outlet.
30. If your device is equipped with a Volex power connector, the mating Volex equipment connector must be
unlocked before it can be removed. However, this also means that the equipment can slide and fall down if
the power cable is pulled, which can lead to personal injuries and/or other damage. For this reason, always be
careful when laying cables.
31. Unplug the power cord and power adapter from the power outlet if there is a risk of a lightning strike or
before extended periods of disuse.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
Never remove the cover, because otherwise there may be a risk of electric shock. There are no user serviceable
parts inside. Have repairs carried out only by qualified service personnel.
The lightning flash 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
sufficient magnitude to constitute a risk of electrical shock.
The exclamation mark within an equilateral triangle is intended to alert the user to the presence of
important operating and maintenance instructions.
CAUTION – HIGH VOLUME LEVELS WITH AUDIO PRODUCTS!
This equipment is intended for professional use. Therefore, commercial use of this equipment is subject to the
respectively applicable national accident prevention rules and regulations. As a manufacturer, Adam Hall is
obligated to notify you formally about the existence of potential health risks.
Hearing damage due to high volume and prolonged exposure: When in use, this product is capable of producing
high sound-pressure levels (SPL) that can lead to irreversible hearing damage in performers, employees, and
audience members. For this reason, avoid prolonged exposure to volumes in excess of 90 dB.
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110 -120 V~ / 50 - 60 Hz
120 -240 V~ / 50 - 60 Hz
MAX 300 W / AC~
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CONNECTIONS, CONTROLS AND INDICATORS:
1MIC IN
Balanced microphone input (XLR/ 6.3 mm jack
combo) It is also possible to use an unbalanced
microphone cable (mono jack).
2MIC GAIN
Volume control for the microphone channel MIC
IN. Turning the knob to the right increases the
volume and turning it to the left decreases it.
3LINE IN
Balanced line input (XLR / 6.3 mm jack combo) It
is also possible to use an unbalanced line cable
(mono jack).
4LINE GAIN
Volume control for the line channel LINE IN. Tur-
ning the knob to the right increases the volume
and turning it to the left decreases it.
5VOLUME
Volume of the sum channel (mix of microphone
channel and line channel). When turned to the
left, levels are lowered, when turned to the right,
they are raised.
6TREBLE
Equalizer high band for the summing channel.
When turned to the left, levels are lowered, when
turned to the right, they are raised. In the centre
position (resting point), the equalizer is inactive.
7BASS
Equalizer low band for the summing channel.
When turned to the left, levels are lowered, when
turned to the right, they are raised. In the centre
position (resting point), the equalizer is inactive.
8LINE OUT
Balanced XLR output for connecting an additional
active speaker or mixer. The input signal consists
of the sum of the channels MIC IN and LINE IN.
LDGT12A shown
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CONNECTIONS, CONTROLS AND INDICATORS:
9LED INDICATORS
POWER: Lights up once the system is properly connected to the power mains and switched on.
SIGNAL: Lights up as soon as an audio signal is present.
LIMIT: Lights up if the loudspeaker system is operating in the clipping range. A short flash of the LED is not
critical. To protect the system, an excessive signal level is gently turned down by the built-in limiter. If the
Limiter LED lights up permanently or for longer periods, reduce the volume level. Failure to do so may result
in a distorted sound and damage to the speaker system.
PROTECT: Lights up if the system is overloaded/overheated. The amplifiers are muted automatically. After
reaching normal operating conditions, the device reverts to normal operating mode, after a few minutes.
10 IEC POWER SOCKET WITH INTEGRAL FUSE HOLDER
Used to power the device. An appropriate power cord is included in the delivery.
IMPORTANT INFORMATION: The speaker is intended for 2 operating voltage ranges (110 V - 120 V AC and
220 V - 240 V AC). The conversion is done automatically.
Replace the fuse only with a fuse of the same type and rating (see label on the rear panel)! If the fuse blows
repeatedly, please contact an authorised service centre.
11 POWER
On / Off switch for the power supply of the device. Before switching the active speaker on or off, always
adjust the volume to zero (VOLUME all the way to the left).
CONNECTIONS, CONTROLS AND INDICATORS:
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0/5° DUAL-TILT FLANGE:
0/5° Dual-Tilt Flange:
LD Systems full range speakers in the GT series are equipped with a tripod flange, which allows an optimal
positioning of the speakers for different sound applications through its 2 tilting angles.
At events with a standing audience and places where a greater range is required, it is advisable to use the 0°
angle (rear flange opening) of the tripod adapter (see figure above).
At events with a seated audience and smaller spaces, it is advisable, to use the 5° angle (front flange opening) of
the tripod adapter (see figure below). This way, in addition to a short-range acoustic cover, adverse reflections on
low ceilings and rear walls are minimised.
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0/5° DUAL-TILT FLANGE: SPECIFICATIONS:
Model Name: LDGT10A
Product Type: PA Speakers
Type: active
Woofer Size: 10"
Woofer Size: 254 mm
Woofer Magnet: ferrite
Woofer Brand: custom made
Woofer Voice Coil: 2"
Woofer Voice Coil: 50.8 mm
Horn: CD horn
HF Driver Size: 1"
HF Driver Size: 25.4 mm
HF Driver Magnet: ferrite
HF Driver Brand: Celestion
HF Driver Voice Coil: 1"
HF Driver Voice Coil: 25.4 mm
Amplifier: class D
Dispersion Angle (H x V): 90° x 60°
Power Output (RMS): 200 W
Power Output (Peak): 800 W
Frequency Response: 65 - 19,000 Hz
Crossover Frequency: 2500 Hz
Max. SPL (continuous): 116 dB
Max. SPL (peak): 119 dB
Protection: overcurrent, HF drivers, overvoltage
Input Sensitivity: Line: -10 dBu / Mic: 150 mV
Controls: Mic Gain, Line Gain, Volume, Treble, Bass, Power
Indicators: Power, Signal, Limit, Protect (the protection circuitry is active)
Line Inputs: 1
Line Input Connectors: XLR/ 6.3 mm jack (combo)
Mic Inputs: 1
Mic Input Connectors: XLR/ 6.3 mm jack (combo)
Line Outputs: 1
Line Output Connectors: XLR
Power Socket: IEC power socket
Power Supply: switching power supply
Operating Voltage: 110 V - 120 V AC, 50 - 60 Hz
220 V - 240 V AC, 50 - 60 Hz (automatic conversion)
Power Consumption (max.): 300 VA
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SPECIFICATIONS:
Model Name: LDGT10A
Cabinet Material: 15 mm plywood
Cabinet Surface: textured Dura-Vinyl
Cabinet Type: bass reflex
Monitor Angle: 54°
Width: 328 mm
Height: 500 mm
Depth: 293 mm
Weight: 13.5 kg
Other Features: 0/5° Dual-Tilt flange, sturdy metal grille
Model Name: LDGT12A
Product Type: PA Speakers
Type: active
Woofer Size: 12"
Woofer Size: 304.8 mm
Woofer Magnet: ferrite
Woofer Brand: custom made
Woofer Voice Coil: 2.5"
Woofer Voice Coil: 63.5 mm
Horn: CD horn
HF Driver Size: 1"
HF Driver Size: 25.4 mm
HF Driver Magnet: ferrite
HF Driver Brand: Celestion
HF Driver Voice Coil: 1"
HF Driver Voice Coil: 25.4 mm
Amplifier: class D
Dispersion Angle (H x V): 90° x 60°
Power Output (RMS): 250 W
Power Output (Peak): 1000 W
Frequency Response: 60 - 19,000 Hz
Crossover Frequency: 2200 Hz
Max. SPL (continuous): 119 dB
Max. SPL (peak): 122 dB
Protection: overcurrent, HF drivers, overvoltage
Input Sensitivity: Line: -10 dBu / Mic: 150 mV
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