LINEAR SOUND LTS.A650L User manual

Linear Technologie • 11 rue du Puits Rochefort • 42 100 Saint-Etienne
Tél: [phone] • Fax: [phone] • www.lineartech.fr V.2017
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
650W AMPLIFIER LTS.A650L
Operation manual

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1. Safety precautions
2. General description
3. Features
4. Nomenclature and functions
a. Front panel
b. Rear panel
5. Connections
a. Speaker connections
b. XLR connections
6. Applications
7. Block diagram
8. Specications
9. Dimensional diagram
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Page 5
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TABLE OF CONTENTS

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• Be sure to read the instructions in this section carefully before use.
• Make sure to observe the instructions in this manual as the conventions of safety
symbols and messages regarded as very important precautions are included.
• We also recommend you keep this instruction manual handy for future reference.
Safety symbol and message conventions
Safety symbols and messages described below are used in this manual to prevent bodily
injury and property damage which could result from mishandling. Before operating your
product, read this manual rst and understand the safety symbols and messages so you are
thoroughly aware of the potential safety.
Warning
When installing the unit
• Do not expose the unit to rain or an environment where it may be splashed by water or
other liquids,as doing so may result in re or electric shock.
• Use the unit only with the voltage specied on the unit. Using a voltage higher than that
which is specied may result in re or electric shock.
• Do not cut, kink, otherwise damage nor modify the power supply cord. In addition,
avoid using the power cord in close proximity to heaters, and never place heavy objects
(including the unit itself) on the power cord, as doing so may result in re or electric
shock.
• Be sure to replace the unit’s terminal cover after connection completion. Because high
voltage is applied to the speaker terminals, never touch these terminals to avoid electric
shock.
• Be sure to ground to the safety ground (earth) terminal to avoid electric shock. Never
ground to a gas pipe as a catastrophic disaster may result.
• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a
slanted surface. Doing so may result in the unit falling down, causing personal injury and
/ or property damage.
When the unit is in use
• Should the following irregularity be found during use, immediately switch o󰀨 the power,
disconnect the power supply plug from the AC outlet and contact your nearest dealer.
Make no further attempt to operate the unit in this conditions this may cause re or
electric shock, ...
- If you detect smoke or a strange smell coming from the unit.
- If water or any metallic object gets into the unit.
- If the unit falls, or the unit case breaks.
- If the power supply cord is damaged (exposure of the core, disconnection, etc)
- If it is malfunctioning (no tone sounds)
1. SAFETY PRECAUTIONS
WARNING Indicates a potentially hazardous situation which, if mishandled,
could result in death or serious personal injury.
CAUTION
Indicates a potentially hazardous situation which, if mishandled,
could result in moderate or minor personal injury, and/or property
damage.

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• To prevent a re or electric shock, never open or remove the unit case as there are high
voltage components inside the unit. Refer all servicing to your nearest dealer.
• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the
unit. If they accidentally spill into the unit, this may cause a re or electric shock.
• Do not insert nor drop metallic objects or ammable materials in the ventilation slots of
the unit’s cover, as this may result in re or electric shock.
Caution
When installing the unit
• Never plug in nor remove the power supply plug with wet hands, as doing so may cause
electric shock.
• When unplugging the power supply cord, be sure to grasp the power supply plug; never
pull on the cord itself. Operating the unit with a damaged power supply cord may cause
a re or electric shock.
• When moving the unit, be sure to remove its power supply cord from the wall outlet.
Moving the unit with the power cord connected to the outlet may cause damage to the
power cord, resulting in re or electric shock. When removing the power cord, be sure to
hold its plug to pull.
• Do not block the ventilation slots in the unit’s cover. Doing so may cause heat to build up
inside the unit and result in re.
• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct
sunlight, near the heaters, or in locations generating sooty smoke or steam as doing
otherwise may result in re or electric shock.
When the unit is in use
• Should the following irregularity be found during use, immediately switch o󰀨 the power,
disconnect the power supply plug from the AC outlet and contact your nearest dealer.
Make no further attempt to operate the unit in this conditions this may cause re or
electric shock, ...
• To prevent a re or electric shock, never open or remove the unit case as there are high
voltage components inside the unit. Refer all servicing to your nearest dealer.
• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the
unit. If they accidentally spill into the unit, this may cause a re or electric shock.
• Do not insert nor drop metallic objects or ammable materials in the ventilation slots of
the unit’s cover, as this may result in re or electric shock.
• Do not place heavy objects on the unit as this may cause it to fall or break which may
result in personal injury and/or property damage. In addition, the object itself may fall o󰀨
and cause injury and / or damage.
• Make sure that the volume control is set to minimum position before power is switched
on. Loud noise produced at high volume when power is switched on can impair hearing.
• Do not operate the unit for an extended period of time with the sound distorting. This is
an indication of a malfunction, which in turn can cause heat to generate and result in a
re.
• Contact your dealer as to the cleaning. If dust is allowed to accumulate in the unit over a
long period of time, a re or damage to the unit may result.
• If dust accumulates on the power supply plug or in the wall AC outlet, a re may result.
Clean it periodically. In addition, insert the plug in the wall outlet securely.
• Switch o󰀨 the power, and unplug the power supply plug from the AC outlet for safety
purposes when cleaning or leaving the unit unused for 10 days or more. Doing otherwise
may cause a re or electric shock.

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4. NOMENCLATURE AND FUNCTIONS
a. Front panel
Heavy-duty public address power ampliers deliver clean audio power 650 watts RMS with
less than 0.5% distortion. Rugged and overbuilt to provide years of reliable service they
are equipped with toroidal transformers, extensive heat-sinking, forced fan cooling and
protective circuits against short-circuit, clipping and over-temperature.
• Rated outputs : 650W
• 100V/70V constant voltage outputs and 4~16 ohms constant resistance outputs.
• Commercial-grade torroidal transformers produce high performance audio on a wide
range of frequencies with minimal noise and high delity, even at high volume.
• Intelligent limiter can reduce excess signal.
• Reliable protection against overload, short circuit, and power uctuation for optimum
reliability.
• Heat sinks and fan protect against overheating, protecting the ampliers working life.
• Rubber feet and rack mount ears-may be placed on tables or installed in rack mount
cabinets.
2. GENERAL DESCRIPTION
3. FEATURES
Note : An all-pole mains switch with a contact separation of at least 3 mm in each pole shall
be incorporated in the electrical installation of the building.
1. POWER SWITCH : On top of the opening Power. Press the end, power shut down
2. VOLUME : Channel volume control
3. TEMP : Temp lit when over heat
4. PROT : Protection indicator LED Prot lit when over heat,short circuit and overloading.
5. CLIP : Clip lit when max wattage output & output signal distortion.
6. SIGNAL : Signal indicator LED. When lit input signal is detected.
7. POWER : Power indicator LED.

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5. CONNECTIONS
a. Speaker connections
Note : Both the 4 - 16 ohms and 70V / 100V terminals cannot be used at the same time.
Impedances indicated in the gures represent the total speaker system (load) impedances.
WARNING
An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be
incorporated in the electrical installation of the building.
8. ~230V 50 Hz AC POWER INPUT
9. COMMON SPEAKER OUTPUT : Connectors for 4~16 ohms or 70V and 100V speaker.
10. LINE INPUT (XLR) : Music signal input balance.
11. LINE INPUT (6.35TRS) : Balanced or unbalanced input music signal (unbalanced input,
use of non-equilibrium 6.35TRS jack)
12. LINK OUTPUT (6.35TRS) : Balanced or unbalanced output music signal (unbalanced
output, use of non-equilibrium 6.35TRS jack)
13. LINE CASCADE OUTPUT (CORLEONE SOCKET) : XLR, output signal of power
amplier.
14. FAN : Equipment, exhaust vents, equipment work properly, you must wrap the hole can
not have any object covered, to avoid overheating protection.
15. GROUND LIFTER : Earth line ground or lift switch. Enable the switch to “GND” position
when one unit is used, disable the switch “LIFT” when several units are used to avoid noise
caused by several earth line grounded.
4.2 Rear panel

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b. XLR connections
Combined XLR (female) phone jack connectors.

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6. APPLICATIONS
Rear panel connection

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7. BLOCK DIAGRAM

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9. DIMENSIONAL DIAGRAM
Keep the unit’s all sides over 10 cm away
from objects that may obstruct air ow to
prevent the unit’s internal temperature rise.
8. SPECIFICATIONS
Model A650L
Rated power output 650W
Speaker outputs 4~16, 70V / 100V
Input sensitivity 775 mV / 0 dB
Frequency response 50 Hz ~ 18 KHz
S/N ratio Better than 105 dB
T.H.D Less than 1% at 1 KHz, 1/3 rated power
Controls Power switch, volume control
Indicators Power, clipping , signal , protect and high
Protection AC fuse, short-circuit, clipping and high temperature
Power requirements ~ 230V / 50 Hz
Power consumption 950W
Dimensions (mm) 484 x 408 x 132
Weight 18.5 kg

Linear Technologie • 11 rue du Puits Rochefort • 42 100 Saint-Etienne
Tél: [phone] • Fax: [phone] • www.lineartech.fr