Toa Electronics CU, BG-2035 CU User manual

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OPERATING INSTRUCTIONS

MIXER AMPLIFIERS

 

 

 

 

 

 

 

 

 

 

 

BG-2035

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BG-2060

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BG-2120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TABLE OF CONTENTS

 

1.

IMPORTANT SAFETY INSTRUCTIONS

.... 2

2.

SAFETY PRECAUTIONS ...........................

3

3.

GENERAL DESCRIPTION .........................

5

4.

FEATURES .................................................

5

5.

NOMENCLATURE AND FUNCTIONS

 

 

Front ............................................................

6

 

Rear .............................................................

7

6.

CONNECTIONS

 

 

6.1. Removable Terminal Plug

 

 

Connection ...........................................

9

 

6.2. Input Connections ................................

9

 

6.3. Plug-In Module Input Connection .......

10

 

6.4. Output Connections ............................

10

 

6.5. Manual Mute Terminal Connection .... 11

 

6.6. Remote Volume Control Connection ..

11

7.

MUTING FUNCTION

 

 

7.1. Manual Mute .......................................

12

 

7.2. Automatic Mute ..................................

13

8.

MOH OUTPUT ASSIGNMENT .................

13

9.

2-CHANNEL BROADCAST ......................

14

10.

OPERATION .............................................

15

11.

INSTALLATION PRECAUTIONS .............

15

12.

RACK MOUNTING BRACKET

 

 

ATTACHMENT .........................................

15

13.

VOLUME SETTING ..................................

16

14.

VOLUME CONTROL COVER ..................

16

15.

BLOCK DIAGRAM ...................................

17

16.

DIMENSIONAL DIAGRAM .......................

18

17.

SPECIFICATIONS ....................................

19

 

Accessories ...............................................

20

 

Optional Product ........................................

20

Thank you for purchasing TOA's Mixer Amplifier.

Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

1. IMPORTANT SAFETY INSTRUCTIONS

Read these instructions.

Keep these instructions.

Heed all warnings.

Follow all instructions.

Do not use this apparatus near water.

Clean only with dry cloth.

Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

Only use attachments/accessories specified by the manufacturer.

Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

Unplug this apparatus during lightning storms or when unused for long periods of time.

Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

2

2. SAFETY PRECAUTIONS

Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.

Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety.

After reading, keep this 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 first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operation and maintenance (servicing) instruction in the literature accompanying the appliance.

WARNING

Indicates a potentially hazardous situation which, if mishandled, could

result in death or serious personal injury.

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 fire or electric shock.

Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire 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 fire or electric shock.

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 and causing personal injury and/or property damage.

External wiring connected to the terminals marked with requires installation by an instructed person.

The apparatus shall be connected to a mains socket outlet with a protective earthing connection.

The socket-outlet shall be installed near the equipment and the plug (disconnecting device) shall be easily accessible.

Use the optional Rack mounting bracket MB-1000 when mounting the unit(s) in an equipment rack. Remove four M4 x 8 screws on both sides of the unit, and mount the bracket there using the M4 x 16 screws (supplied with the bracket) instead.

When the Unit is in Use

Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this may cause fire 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.)

To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to your nearest TOA 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 fire or electric shock.

Do not insert nor drop metallic objects or flammable materials in the ventilation slots of the unit's cover, as this may result in fire or electric shock.

3

CAUTION

Indicates a potentially hazardous situation which, if mishandled, could

result in moderate or minor personal injury, and/or property damage.

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 fire 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 fire 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 fire.

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 fire or electric shock.

To avoid electric shocks, be sure to unplug the unit's power supply cord when connecting speakers.

Be sure to follow the instructions below when rack-mounting the unit. Failure to do so may cause a fire or personal injury.

·Install the equipment rack on a stable, hard floor. Fix it with anchor bolts or take other arrangements to prevent it from falling down.

·When connecting the unit's power cord to an AC outlet, use the AC outlet with current capacity allowable to the unit.

·No rack-mounting screws are supplied with the unit. Separately prepare the appropriate screws for the rack.

Keep the amplifier over 10 cm (3.94") away from objects that may obstruct air flow to prevent the unit's

internal temperature rise.

Over 10 cm

 

(3.94")

When the Unit is in Use

Over 10 cm (3.94")

Over 10 cm (3.94")

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 off 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 fire.

If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically. In addition, insert the plug in the wall outlet securely.

Switch off 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 fire or electric shock.

The lighting 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 electric shock to persons.

ATTENTION

L'appareil ne doit pas être exposé aux éclaboussures ou écoulements et tous objets remplis de liquide, tels que vases, ne doivent pas être sur l’appareil.

4

3. GENERAL DESCRIPTION

The BG-2035 (35 W), BG-2060 (60 W), and BG-2120 (120 W) are 5-input mixer amplifiers for background music and general announcement. These units are suited for use in bars, retail stores, and banquet rooms, and are equipped with the MOH output that permits 2-channel broadcast when used in conjunction with the optional booster amplifier BA-235 (35 W) or BA-260 (60 W).

4. FEATURES

Each input freely assignable to the MOH output.

Automatic or manual mute function.

Easy setting of each function with the rear-mounted DIP switches.

(Each input to MOH output assignment settings, Mute settings, LINE 1/TEL level settings, and Phantom power ON/OFF setting)

Supplied volume control covers prevent accidental operation of input knobs.

Front operable bass and treble controls.

Also front panel recessed knobs help to prevent accidental operation.

Removable input/output terminal blocks facilitate installation and maintenance. Besides, RCA jacks provided for Lines 2 and 3.

External remote volume control for speaker output level adjustment.

5

5. NOMENCLATURE AND FUNCTIONS

[Front]

 

 

 

 

 

 

 

3

4

5

6

7

8

9

2

10

 

11

 

 

 

 

1

This figure represents the BG-2120.

1.Power switch

Power is switched on and off with each depression of this switch.

2.Power indicator

Lights blue when the Power switch (1) is switched on.

3.Microphone input volume control

Adjusts gain of the microphone input.

Turn the knob clockwise to increase the volume and counterclockwise to decrease it.

Note

This control is not active for the MOH output terminal (26).

4.Line 1/TEL input volume control

Adjusts gain of the Line 1 or TEL input.

Turn the knob clockwise to increase the volume and counterclockwise to decrease it.

Refer to the Function switch (24) on the next page to switch between Line 1 or TEL.

Note

This control is not active for the MOH output terminal (26).

5.Line 2 input volume control

Adjusts gain of the Line 2 input.

Turn the knob clockwise to increase the volume and counterclockwise to decrease it.

Note

This control is not active for the MOH output terminal (26).

6.Line 3 input volume control

Adjusts gain of the Line 3 input.

Turn the knob clockwise to increase the volume and counterclockwise to decrease it.

Note

This control is not active for the MOH output terminal (26).

7.Module input volume control

Adjusts gain of the Module input.

Turn the knob clockwise to increase the volume and counterclockwise to decrease it.

Note

This control is not active for the MOH output terminal (26).

8.Signal level indicator

Lights green when audio signals are output from the speaker output terminal.

9.Peak indicator

Lights red if output signals approach clipping level. If steady lit, turn down the corresponding input volume control until the indicator flashes intermittently.

10.Bass control

Turn the knob clockwise to increase bass level and counterclockwise to decrease it.

The center position of the control provides flat frequency response.

11.Treble control

Turn the knob clockwise to increase treble level and counterclockwise to decrease it.

The center position of the control provides flat frequency response.

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+ 14 hidden pages