TOA Electronics IP-450D, IP-600D, IP-300D User Manual

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OPERATING INSTRUCTIONS

IP Series

DUAL POWER AMPLIFIERS IP-600D

IP-450D

IP-300D

TABLE OF CONTENTS

 

 

 

 

1.

SAFETY PRECAUTIONS

2

8.

CLEANING THE FILTER

9

2. GENERAL DESCRIPTION

4

9.

REMOVING THE HANDLE

9

3.

FEATURES

4

10.

INSTALLING AN OPTIONAL

 

4.

HANDLING PRECAUTIONS

4

 

MATCHING TRANSFORMER

 

5. NOMENCLATURE AND FUNCTIONS

 

 

LT-101

10

 

Front panel

5

11. BLOCK DIAGRAM

10

 

Rear panel

6

12.

TABLE FOR PROTECTION CIRCUIT

 

6. INSTALLATION

7

 

ACTIONS

11

7. CONNECTIONS

8

13.

APPEARANCE AND DIMENSIONS

11

 

 

 

14.

SPECIFICATIONS

12

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.

TOA Corporation

1. SAFETY PRECAUTIONS

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 first so you are thoroughly aware of the potential safety hazards as well as understand the safety symbols and messages.

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or proper damage.

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.

Be sure to replace the unit's terminal cover after connection completion. Because the voltage of up to 100 V is applied to the output terminals, never touch these terminals to avoid 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.

Install the unit only in a location that can structurally support the weight of the unit and the mounting bracket. Doing otherwise may result in the unit falling down and causing personal injury and/or property damage.

When the Unit is in Use

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.

Do not touch a plug during thunder and lightning, as this may result in electric shock.

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.)

2

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.

When unpacking or moving the unit, be sure to handle the unit with two or more persons. Falling or dropping the unit may cause personal injury and/or property damage.

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED

SERVICE PERSONNEL.

When the Unit is in Use

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 speaker 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.

Contact your TOA dealer as to the cleaning. If dust is allowed to accumulate in the unit over a long period of time, a fire or damage to the unit may result.

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. A fire or electric shock may result.

The lighting flash with arrowhead within a triangle is intended to tell the user that parts inside the product are a risk of electric shock to persons.

The exclamation point within a triangle is intended to tell the user that important operating and servicing instructions are in the papers with the appliance.

3

2. GENERAL DESCRIPTION

TOA's IP series dual power amplifiers feature high durability, high quality sound and high output power (IP300D: 300 W, IP-450D: 450 W, IP-600D: 600 W - when a 4 load connected). Input/output levels and other functions can be remotely controlled from external equipment. (An interface unit is required. For details, contact your TOA dealer.) The amplifier is ideal for use in store sound systems, permanently-installed sound systems, and other sound systems.

3. FEATURES

Small in size (2-rack unit size) and light in weight.

Variable forced-air cooling system changes the speed of a fan as the heat sink temperature varies, keeping fan operation noise low.

The input is an electrically-balanced input, which can be converted into a transformer-balanced input using an optional input transformer.

Three different output modes are made available for selection: Stereo, BTL and parallel outputs. In parallel mode, the input level of each channel can be set independently.

An internal limiter limits the current during overload, and a protection circuit disconnects the output during an output short circuit by detecting the levels of both voltage and current. The protection circuit also disconnects the output during an abnormal temperature rise.

Large output screw terminals (10 mm in width) allow connection of solderless terminals with diameter of 9.5 mm. Because two of each of positive (+) and negative (-) terminals are provided, even the four-core speaker cables can be connected.

Control I/O terminal. Input and output levels can be remotely controlled or monitored from external equipment. (An interface unit is required. For details, contact your TOA dealer.)

Detachable carrying handles even after the unit is installed in a rack.

A push-lock level control and its cover prevent accidental setting changes after installation.

An AC inlet simplifies the system maintenance after installation.

4. HANDLING PRECAUTIONS

Line Source: 120 VAC ± 10%, 60 Hz

Never connect the AC power cord to any other line voltage than that specifically designated.

To avoid oscillation, keep the input cable away from the output cable. Particular care must be exercised when mounting the unit in an equipment rack.

In some installations, a ground loop is formed and such noise as hum may be generated. In such cases, cut the loop by removing a shorting metal piece attached to the ground terminals on the rear panel. The noise can be reduced.

These power amplifiers have a filter in their front panel. Clean the filter as frequently as possible. If it becomes clogged, heat cannot escape from the inside of the unit.

Never connect two amplifier outputs in parallel under any circumstances.

4

5. NOMENCLATURE AND FUNCTIONS

[ Front Panel ]

Power switch

 

 

Carrying handle

Power is switched on

and off

with each

Can be detached. Refer to p.9 when removing.

depression of this switch.

 

 

 

Power indicator lamp

Lights green when the power is switched on.

Signal indicator lamp

Lights green regardless of the input level control setting when there is an input of a signal with a level exceeding -30 dB.

Peak indicator lamp

Lights red if an output signal clips (distortion occurs).

Protection circuit indicator lamp

Lights red for three seconds after the power is supplied to the unit, and then goes out. This lamp also lights red when a protection circuit is activated. Refer to p. 11

"Table for protection circuit actions" for details.

Level control bypass indicator lamp

Lights yellow when the level control switch (refer to p.6) is in the ON position. While this lamp remains lit, the input level control cannot be used because it is bypassed.

Input level control (pushlock type)

Clicks at each dB mark on the scale when rotated. This knob is recessed to avoid accidental setting changes. Pressing on the knob raises it above the front panel to permit level adjustment.

[Precautions]

When the level control switch on the rear panel is set to ON, the input level control cannot be used because it is bypassed.

Level control cover

An input level can be fixed by removing the input level control knob from the front panel and attaching the supplied control cover.

[Note]

Keep the removed input level control knob for future use.

5

[Rear panel]

Input terminal

Electrically-balanced input terminals. The 3P screw terminal is connected in parallel with a balanced phone jack.

Also, the input can be converted into a transformerbalanced input using an optional matching transformer

LT-101.

3P screw terminal

H:HOT

C:COLD

E:GROUND

Balanced phone jack

T (Tip): HOT R (Ring): COLD S(Sleeve): GROUND

Phone jack

Phone plug

Output mode selector switch

Selects STEREO, BTL or PARALLEL mode.

STEREO mode

Channels 1 and 2 are operated independently. (The unit functions as a normal stereo amplifier.) Channel

1 input signal goes to Channel 1 output, and Channel 2 input signal goes to Channel 2 output.

BTL mode

The unit functions as a monaural amplifier with 1 input and 1 output. Channel 1 input signal goes to both output BTL (+) and (-) terminals.

PARALLEL mode

The unit functions as a monaural amplifier with 1 input and 2 outputs. Channel 1 input signal goes to the outputs of both Channels 1 and 2. Input signal levels of channels 1 and 2 can be set independently.

[Precautions]

Use only Channel 1 input terminal when in BTL or

PARALLEL mode. Do not use Channel 2 input terminal.

Confirm the position of the output mode selector switch before switching on the power. Be sure to switch off the power when changing mode switch settings.

Level control switch

Usually, set this switch to OFF. When an interface unit is connected, shifting this switch to ON permits external input level adjustment.

[Precautions]

No sound is output if the level control switch is set to

ON without connecting an interface unit. Confirm the switch position before switching on the power. Be sure to switch off the power when changing control switch settings.

Control I/O terminal

Connects to the an interface unit when monitoring or performing remote controls from external equipment. For details, contact your TOA dealer.

[Precautions]

No other unit other than an interface unit must be connected to the terminal. Be sure to switch off the power when connecting an interface unit.

Output terminal (with a protection cover)

Connect speaker cables to these terminals. Because the upper terminals are connected in parallel with the lower terminals, both terminals can be used simultaneously. Refer to p.8 for speaker cable connections.

[Precautions]

Be sure to switch off the power when connecting the speaker cables. Never connect two amplifier outputs in parallel under any circumstances.

Grounding terminal for signals

When the power amplifier is connected to other equipment, grounding sometimes creates a loop, producing hum noise. This loop can be cut and noise reduced by removing a shorting metal piece connecting two terminals.

ACinlet

Rear mounting bracket

6

6. INSTALLATION

Carefully note heat radiation when installing the unit. These power amplifiers are equipped with a cooling fan. To avoid heat buildup, ensure that the rear of the unit is at least 10 cm away from the wall surface.

When mounting the unit in the rack, the inside of the rack must be well ventilated. To accomplish this, keep the rear side of rack open (no panel is mounted), and mount a ventilation panel of over 1-unit size in the uppermost and lowermost rack positions on the rack front.

When installing in the rack, be sure to mount a perforated panel of over 1 -unit size between the amplifiers. See the figure below.

Robust structure is one of the unit's main features. However, if the strength is particularly needed when installing the unit in the rack, use the supporting runner YA-706 (option) for the safety purposes.

7

7. CONNECTIONS

1.Switch off the amplifier power.

2.Unscrew the output terminal cover.

3.Strip 10 mm of insulative jacket from the end of the speaker cable, as shown in the figure at right.

4.Connect speaker cables to the output terminals.

5.Fit the output terminal cover in place.

[Precautions] Be sure to fit the output terminal cover in place.

Take care that the naked wires of the speaker lines do not contact the unit's chassis.

Refer to the figures below for connections for each output mode.

Since the upper output terminals are connected in parallel with the lower terminals, both terminals can be used simultaneously.

STEREO mode

Output mode switch

Output terminal

BTL mode

Output mode switch

Output terminal

PARALLEL mode

Output mode switch

Output terminal

[Precautions]

The total impedance of the connected speakers must be over 4 (STEREO and PARALLEL modes) or over 8 (BTL mode). If the impedance of the connected speakers is smaller than those stated above, equipment failures may result.

Refer to the table below when using an optional output transformer.

Power amplifier Output transformer(option)

IP-600D MT-600M

IP-450D MT-450M

IP-300D MT-300M

[Precautions]

Do not connect the output transformer under any circumstances when in BTL mode. Both the amplifier and transformer may fail.

8

8. CLEANING THE FILTER

1.Switch off the amplifier power.

2.Pull the filter from the front panel as shown in the figure.

3.Clean the filter.

4.Fit the filter in place.

[Precautions] Make sure that the fan is turned off when removing the filter.

Filter

9. REMOVING THE HANDLE

1.Switch off the amplifier power.

2.Remove the handle cover.

3.Remove two screws holding the handle to the amplifier.

4.Remove the handle.

5.Install the supplied screws (M4x20).

6.Attach the handle cover to the unit.

Handle

Handle cover

Handle cover

9

10. INSTALLING AN OPTIONAL MATCHING TRANSFORMER LT-101

[ CAUTION ]

THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY.

TO AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.

REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.

1.Attach sleeves supplied with the transformer to the transformer.

2.Remove case fixing screws to remove the case.

3.When installing the transformer at channel 1, disconnect connector CN323 (with a lead) from CN324. Insert

CN323 into the transformer connector marked with IN, then insert the connector (with a lead) from the transformer into CN324. When installing the transformer at channel 2, disconnect connector CN326 (with a lead) from CN327. Insert CN326 into the transformer connector marked with IN, then insert the connector (with a lead) from the transformer into CN327.

4.Mount the transformer to the rear panel.

5.Replace the case.

[Precautions] Make sure that the power is switched off when installing the transformer.

11. BLOCK DIAGRAM

10

12. TABLE FOR PROTECTION CIRCUIT ACTIONS

Symptom

Action

Indicator

Remedy

Reset

Excessive current flow

Current limiter operates

Peak indicator lights.

Remove overload.

Automatically reset if 4

due to overload

when load resistance is

 

 

(STEREO/PARALLEL) or

 

under 2.5 (STEREO/

 

 

8 (BTL) load is

 

PARALLEL) or 5

 

 

connected.

 

(BTL).

 

 

 

Short circuit (under 0.5 )

Current limiter operates.

Protection circuit

Check short circuit of

Switch power off, connect

 

Speaker loads cut by

indicator lights.

speakers and lines.

correct load, and switch

 

 

 

power on.

 

output relay.

 

 

 

Heat sink temperature rise

Speaker loads cut by

Protection circuit

Check ventilation and

Automatically reset if

 

output relay.

indicator lights.

overload.

temperature drops.

Unusual DC voltage output

Speaker loads cut by

Protection circuit

Contact your TOA

Switch power off, then

 

output relay.

indicator lights.

dealer.

remove cause.

13. APPEARANCE AND DIMENSIONS

Unit: mm

11

14. SPECIFICATIONS

Model No.

IP-300D

IP-450D

IP-600D

Output 20 Hz - 20 kHz

 

 

 

STEREO RL=4

300 W

450 W

600 W

 

RL=8

200 W

300 W

400 W

BTL

RL=8

600 W

900 W

1200 W

Frequency Response

 

20 Hz - 20 kHz (+0 dB, -0.5 dB)

 

Total Harmonic Distortion

 

 

 

8

,1 kHz

 

0.01%

 

8

, 20 Hz - 20 kHz

 

0.1%

 

Intermodulation Distortion

0.03%

60 Hz : 7kHz= 4:1, 8

Input Sensitivity

(8 , input level control in maximum position) Voltage Gain

Input Impedance Signal-to-Noise Ratio

20 Hz - 20 kHz

Cooling Fan Speed

Connection Terminal

+ 2.2 dB (1.00 V) ±0.5 dB

+ 4.0 dB (1.23 V) ±0.5 dB

+ 5.3 dB (1.42 V) ±0.5 dB

 

 

 

32 dB

 

 

10 k

(electrically-balanced)

108 dB (at 26 dB gain)

110 dB (at 26 dB gain)

112 dB (at 26 dB gain)

103 dB (at32 dB max. gain)

105 dB (at 32 dB max. gain)

107 dB (at 32 dB max. gain)

 

Under 40 °C : Stop

 

 

40 °C-75 °C

: Low to high speed (variable)

 

Over 75 °C

: High speed

 

Input (CH1 , CH2)

: screw terminal, balanced phone jack

Output

: Terminal with screw/washer assembly

CONTROL I/O

: 8P DIN

Power supply

: AC inlet

Indicator

Power Source

Power Consumption

Based on UL/CSA standards

Finish

Dimensions

Weight

POWER (green), SIGNALx 2 (green) , PEAKx2 (red) , PROTECT x 2 (red) , VR BYPASS x 2 (yellow)

120VAC±10%, 60 Hz

444 VA 648 VA 984 VA

Panel: Zinc diecasting, black paint

Case: Colored steel plate, black

482 (W) X 102.4 (H) X 473.5 (D) mm

 

13 kg

18 kg

[Notes]

0 dB=0.775 Vrms

The above specifications are subject to change without notice.

Accessories

Screw M4x20

4

Power cord (2.5 m)

1

Level control cover

2

Instruction manual

1

Printed in Japan

TOA Corporation

133-12-566-7A