TP-Link DA-500F-HL CU User Manual

Page 1

OPERATING INSTRUCTIONS

MULTICHANNEL POWER AMPLIFIERS

DA-550F CU DA-500F-HL CU

Thank you for purchasing TOA's Multichannel Power Amplifier. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

1. IMPORTANT SAFETY INSTRUCTIONS ... 2

2. SAFETY PRECAUTIONS ........................... 3

3. GENERAL DESCRIPTION ......................... 4

4. FEATURES ................................................. 4

5. HANDLING PRECAUTIONS ...................... 5

6. INSTALLATION PRECAUTIONS .............. 5

7. NOMENCLATURE AND FUNCTIONS

Front ............................................................ 6

Rear ............................................................ 7

8. SETTINGS AND CONNECTIONS ............... 9

8.1. Switch Settings and Speaker Connections

... 10

9. REMOVABLE TERMINAL PLUG

CONNECTION ........................................... 12

10. INPUT SENSITIVITY SETTING ................. 13

11. PROTECTION OPERATION LIST ............ 13

12. TAMPER-PROOF CAP ATTACHMENT ... 14

13. CLEANING THE FILTER .......................... 14

14. DIMENSIONAL DIAGRAM ........................ 14

15. BLOCK DIAGRAMS

15.1. DA-550F ............................................ 15

15.2. DA-500F-HL ...................................... 15

16.

HOW TO USE THE CONTROL/MONITOR TERMINALS

16.1. Control Terminal (Input) .................... 16

16.2. Monitor Terminal (Output) ................. 16

16.3. About Pin 7 of the Control/Monitor

Terminals .......................................... 17

16.4. Terminal Pin Arrangement ................ 17

16.5. Connection Cable and

Maximum Cable Length .................... 17

16.6. RJ45 Connector's Pin Arrangement

and Cable Color Codes ..................... 18

17. SPECIFICATIONS

17.1. DA-550F CU ..................................... 19

17.2. DA-500F-HL CU ................................ 20

TABLE OF CONTENTS

Page 2

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.

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

FCC REQUIREMENTS

• This Class A digital apparatus complies with Canadian ICES-003.

• Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

Page 3

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 140 V is applied to the high impedance speaker terminals, never touch these terminals to avoid electric shock. (DA-500F-HL only)

• 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.

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 such as modification inside the unit to qualified service personnel.

• 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.

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.

• 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 switch off the unit's power when connecting speakers.

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.

WARNING

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 property damage.

WARNING

CAUTION

Page 4

• The unit is designed exclusively to be mounted in an equipment rack. 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.

· Be sure to use the screws with a diameter of over

5 mm (0.2") and length of over 12 mm (0.47") to mount the unit.

· When connecting the unit's power cord to an AC

outlet, use the AC outlet with current capacity allowable to the unit.

When the Unit is in Use

• With the HPF ON/OFF switch kept to the OFF position (factory preset), operating the unit for long periods of time while the Peak indicator is illuminated due to excessive input signal may damage the connected speakers, possibly resulting in fire. Operating the unit with the HPF ON/OFF switch set to the ON position may decrease the possibility of speaker damage or fire due to excessive input signal.

• Make sure that all volume controls are 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.

• 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. Doing otherwise may cause a fire or electric shock.

3. GENERAL DESCRIPTION

TOA's DA-550F Multichannel Power Amplifier features high power handling of 550 W x 4 channels (4 Ω output) or 350 W x 4 channels (8 Ω output) and durability. TOA's DA-500F-HL Multichannel Power Amplifier features high power handling of 500 W (70 V line) x 4 channels (9.8 Ω output), or 550 W x 4 channels (8 Ω output), or 100 W x 4 channels (4 Ω output) and durability. Channels 1 and 2, and 3 and 4 are made available for bridge connection individually, allowing the DA-550F to be used as a 1,100 W (8 Ω) X 2 channels amplifier, or the DA-500F-HL as a 1,000 W (140 V line) x 2 channels (19.6 Ω) amplifier or 1,100 W x 2 channels (16 Ω) amplifier. When a bridge connection is made, each model can be used as a 2-channel stereo amplifier or as a 3-channel amplifier. Their wide range of applications include stores and permanent sound systems.

4. FEATURES

• 2U rack mounting size*.

• Low power consumption and light weight.

• An input signal to Channel 1 can be routed to all channels, and the output level adjusted using the input level control for each channel.

• Electronically-balanced inputs.

• Input terminals employ removable terminal blocks and XLR type connectors to provide maximum connection ease.

• Input/output status LED indicators for each channel.

• Built-in protection circuitry disconnects the output when a short circuit, overload, or unusual temperature rise occurs.

• Equipped with the terminals used for internal information monitoring (power supply, protection status, and fan operation) and power ON/OFF control from external equipment.

* 1U size = 44.5 mm or 1.75" (reference size)

An all-pole mains switch with a contact separation of at least 3 mm (0.12") in each pole shall be incorporated in the electrical installation of the building.

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.

Page 5

5. HANDLING PRECAUTIONS

• Keep the input cable away from the output cable. If installed close to each other, oscillation could occur.

• To avoid unit failures, never connect outputs of 2 or more units in parallel.

• Only connect speakers with an impedance equal to or greater than those specified. Connecting speakers with a smaller than specified impedance could cause damage to the unit.

• Periodically clean the filter located inside the ventilation panel on the unit's front panel. If the filter becomes clogged, heat will become trapped inside the enclosure.

• Install the unit in locations where the temperature is between –10°C and +40°C (14°F and 104°F) and the moisture is less than 90%RH (no dew condensation must be formed).

• To clean, be sure to first switch off the unit's power, then wipe with a dry cloth. When the unit gets very dirty, use a cloth damped in a neutral cleanser. Never use benzene, thinner, alcohol, or chemically-treated cleaning cloth because such volatile liquids could deform or discolor the unit.

6. INSTALLATION PRECAUTIONS

• When mounting the unit in an equipment rack, the inside of the rack must be sufficiently ventilated. To achieve sufficient ventilation, remove all panels on the rear of the rack.

• When mounting the unit in the rack, also mount a Perforated Panel larger than 1U in size*:

(1) at the top and the bottom of the rack, and (2) above and below every 5 units.

* 1U size = 44.5 mm or 1.75" (reference size)

Rack mounting screws are not supplied with the unit. Be sure to use the screws with a diameter of over 5 mm (0.2") and length of over 12 mm (0.47") to mount the unit. Failure to do so may cause personal injury.

CAUTION

Power amplifiers DA-550F/500F-HL

Perforated panel

Power amplifiers DA-550F/500F-HL

Page 6

7. NOMENCLATURE AND FUNCTIONS

[Front]

1. Power switch [ ON/OFF]

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

2. Power indicator [POWER]

Lights blue when the power is switched on.

3. Input level controls

[CH 1/BRIDGE 1, CH 2, CH 3/BRIDGE 2, CH 4]

Adjust the input level of each channel.

4. Ventilation panel (Air Vent)

A filter is located inside the ventilation panel. To clean the filter, remove the ventilation panel. (See p. 14; Cleaning the Filter.)

5. I

ndicators [INPUT, OUTPUT, PEAK, PROTECT]

The indicators are as follows from left to right:

• Input indicator [INPUT]

Lights green regardless of the input level control setting when an input signal level exceeds about –20 dB.

• Output indicator [OUTPUT]

Lights yellow when an output level exceeds about 1 W at an 8 Ω load (DA-550F) or 9.8 Ω load (DA-500F-HL).

• Peak indicator [PEAK]

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

• Protection indicator [PROTECT]

Lights red when the protection circuitry is activated. (See p. 13; Protection Operation List.) When the power is switched on, this indicator lights for about 2 seconds and then extinguishes.

When a bridge connection is made

• When Channels 1 and 2 are bridge-connected (BRIDGE 1 ON/OFF switch (10) is set to ON), the CH 1/BRIDGE 1 level control adjusts the input levels of Channels 1 and 2. In this event, the CH 2 level control cannot be used.

• When Channels 3 and 4 are bridge-connected (BRIDGE 2 ON/OFF switch (10) is set to ON), the CH 3/BRIDGE 2 level control adjusts the input levels of Channels 3 and 4. In this event, the CH 4 level control cannot be used.

DA-550F DA-500F-HL

123 4 5

Page 7

[Rear]

6. AC power cord (2 m or 6.56 ft)

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

7. Control/Monitor terminals [CONTROL/MONITOR]

Connecting external equipment to these terminals makes the control and monitor functions available for channels 1 – 4 individually. (See p.16; How to Use the Control/Monitor Terminals.)

8. Speaker output terminals [OUTPUTS] (with a terminal cover )

Connect speaker cables to these terminals.

9. Input terminals [INPUTS]

Electronically-balanced input terminals. Each removable terminal block (3 pins) is internally connected in parallel to the corresponding XLR type connector.

• Removable terminal block (3 pins)

H: Hot, C: Cold, E: Earth

•

XLR type male connector (XLR-3-31 equivalent)

Pin 1: Earth, Pin 2: Hot, Pin 3: Cold

If a straight plug hits the rack's rear cover or wall behind the rack when it is used for connection, use the L-shaped plug instead.

10. BRIDGE ON/OFF switches [BRIDGE 1, BRIDGE 2, ON / OFF]

Used when bridge-connecting the unit's Channels 1 and 2, and Channels 3 and 4. (See p. 9; Settings and Connections.)

• 4-channel input mode

Set both BRIDGE 1 and 2 switches to OFF. (factory-preset)

• 3-channel input mode

Set either BRIDGE 1 or 2 switches to ON. When bridge-connecting Channels 1 and 2, set BRIDGE 1 switches to ON, and BRIDGE 2 switches to ON when bridge-connecting Channels 3 and 4.

• 2-channel input mode

Set both BRIDGE 1 and 2 switches to ON.

Note

Be sure to first turn off the power switch when changing the BRIDGE switch settings.

Caution when using an XLR type plug

DA-550F

1110 10

DA-500F-HL

12 13

8 99

1110 10

Page 8

11. CH 1 mode ON/OFF switch [CH 1 TO ALL, ON / OFF]

Setting this switch to ON (pressed in) transmits the Channel 1 input signal to all channels. Output signal levels can be individually adjusted with each channel's input level control (3).

Note

Be sure to first turn off the power switch when changing the CH 1 mode switch settings.

12. Functional ground terminal [SIGNAL GND]

Hum noise may be generated when external equipment is connected to the unit. Connecting this terminal to the functional ground terminal of the external equipment may reduce the hum noise.

Note

This terminal is not for protective ground.

13. HPF ON/OFF switch (DA-500F-HL only)

Input signals to CH1 – CH4 can be filtered through the High-pass filters having 6 dB attenuation at a cut-off frequency of 50 Hz. Set the DIP switch to the "ON" position to switch on the filter, and set it to the "OFF" position to off the filter.

Note

The DIP switch is factory-preset to the "OFF" position.

When a bridge connection is made

Perform high-pass filter setting with the CH1 DIP switch when Channels 1 and 2 are bridge-connected (Set the Bridge 1 ON/OFF switch (10) to ON). (Filter setting for the CH2 is disabled.) Similarly, perform the filter setting with the CH3 DIP switch when Channels 3 and 4 are bridge-connected. (Set the Bridge 2 ON/OFF switch (10) ON). (Filter setting for the CH4 is disabled.)

Page 9

Step 1. Switch off the unit's power.

Step 2. Set the BRIDGE ON/OFF switches and CH 1 mode ON/OFF switch.

Step 3. Set the HPF ON/OFF switch. (DA-500F-HL only)

HI-PASS: –6 dB/oct, cut off frequency 50 Hz

FLAT: OFF

Step 4. Connect the sound source equipment to the Input terminals.

Note: Refer to p. 12 for the removable terminal plug connection.

Step 5. Connect speakers to the Speaker output terminals.

5-1. Unscrew the output terminal cover.

5-2. Strip 10 mm (0.39") of insulative jacket from the end of the speaker

cable, as shown in the figure at right.

5-3. Connect speaker cables to the output terminals.

5-4. Replace the output terminal cover in place.

Be sure to replace the unit's terminal cover after connection completion. Because high voltage is generated at the speaker output terminals, never touch these terminals to avoid electric shock. (DA-500F-HL only)

WARNING

8. SETTINGS AND CONNECTIONS

With the HPF ON/OFF switch kept to the OFF position (factory preset), operating the unit for long periods of time while the Peak indicator is illuminated due to excessive input signal may damage the connected speakers, possibly resulting in fire. Operating the unit with the HPF ON/OFF switch set to the ON position may decrease the possibility of speaker damage or fire due to excessive input signal.

CAUTION

CH 1 mode ON/OFF switch

BRIDGE 2 ON/OFF switch

[Rear panel]

Speaker output terminals

(with a terminal cover)

Input terminals

Note: The figure shows the DA-500F-HL.

BRIDGE 1 ON/OFF switch

HPF ON/OFF switch (DA-500F-HL only)

10 mm (0.39”)

Page 10

8.1. Switch Settings and Speaker Connections

[4 inputs - 4 outputs] (factory-preset)

CH1

CH2

CH3

CH4

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

[1 input - 4 outputs]

CH1

CH2

CH3

CH4

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Setting

OFF

Setting

OFF

Speaker output terminals

CH4

CH3

CH2

CH1

Speaker output terminals

CH4

CH3

CH2

CH1

DA-550F

4 – 8 Ω

DA-550F

4 – 8 Ω

DA-500F-HL

4 – 9.8 Ω

DA-500F-HL

4 – 9.8 Ω

[2 inputs - 2 outputs]

CH1

CH2

CH3

CH4

[1 input - 2 outputs]

CH1

CH2

CH3

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Setting

OFF

Setting

Speaker output terminals

4 – 8 Ω

BRIDGE 1BRIDGE 2

DA-550F

8 Ω

BRIDGE 1BRIDGE 2

DA-550F

8 Ω

4 – 9.8 Ω

DA-500F-HL

16 – 19.6 Ω

DA-500F-HL

16 – 19.6 Ω

CH4

8 Ω

16 – 19.6 Ω

Page 11

[3 inputs - 3 outputs (1)]

CH1

CH2

CH3

CH4

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Setting

OFF

Speaker output terminals

CH2

BRIDGE 2

CH1

DA-550F

4 – 8 Ω

8 Ω

DA-500F-HL

4 – 9.8 Ω

16 – 19.6 Ω

[3 inputs - 3 outputs (2)]

CH1

CH2

CH3

CH4

[1 input - 3 outputs (1)]

CH1

CH2

CH3

CH4

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Setting

OFF

Setting

OFF

Speaker output terminals

CH3

CH4

Speaker output terminals

CH2

BRIDGE 2

BRIDGE 1

DA-550F

8 Ω

4 – 8 Ω

CH1

DA-550F

4 – 8 Ω

8 Ω

DA-500F-HL

16 – 19.6 Ω

4 – 9.8 Ω

DA-500F-HL

4 – 9.8 Ω

16 – 19.6 Ω

[1 input - 3 outputs (2)]

CH1

CH2

CH3

CH4

Switch

BRIDGE 1

BRIDGE 2

CH 1 mode

Setting

OFF

Speaker output terminals

CH3

CH4

BRIDGE 1

DA-550F

8 Ω

4 – 8 Ω

DA-500F-HL

16 – 19.6 Ω

4 – 9.8 Ω

Page 12

Connector connections

Step 1. Loosen the terminal screw, then insert the cable.

Step 2. Retighten the terminal screw. (Pull on the cable to ensure it is securely connected.)

Tip

Recommended slotted screwdriver type: Screwdriver with blade that is 3 mm (0.12") in width

9. REMOVABLE TERMINAL PLUG CONNECTION

Cautions

• Be sure to use shielded cables for audio signal lines.

• Avoid soldering cable conductor, as contact resistance may increase when the cable is tightened and the

solder is crushed, possibly resulting in an excessive rise in joint temperatures.

• Use cables of AWG 12 – 24.

Cable end treatment

Shielded cable

7 mm

(0.28”)

20 mm (0.79”)

Tightens

Slotted screwdriver

Loosens

Terminal screw

Hot

Earth

Cold

Shielded cable

Bit shape 3 mm (0.12”)

Removable terminal plug

Page 13

11. PROTECTION OPERATION LIST

10. INPUT SENSITIVITY SETTING

The input sensitivity for each channel can be set to either +4 dB (factory preset) or –10 dB.

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.

CAUTION

Step 1. Unscrew 9 screws securing the top cover

of the unit, then detach it.

Step 2. Insert the jumper socket into either "+4 dB"

or "–10 dB" position as shown at right.

When a bridge connection is made;

Set the input sensitivity with the CH1 jumper socket when Channels 1 and 2 are bridge-connected. Similarly, set the input sensitivity with the CH3 jumper socket when Channels 3 and 4 are bridgeconnected. (Input sensitivity settings for the CH2 and CH4 are disabled.)

Step 3. Replace the detached top cover.

[When set to +4 dB] [When set to –10 dB]

Jumper socket

(Factory-preset)

Input

Sensitivity

–10 dB/+4 dB

Front panel

CH 1 CH 2 CH 3 CH 4

Viewed from top with the top cover detached.

Failure Protection Operation Indicator Remedy Recovery

Input

Sensitivity

–10 dB/+4 dB

Jumper socket

Overcurrent due to overload

Short circuit Current limiter activated.

Temperature rise at power amp. heat sink (over 100°C)

Temperature rise at power supply heat sink (over 80°C)

Abnormal DC voltage output

Current limiter activated when impedance drops below the specified value.

Load is disconnected.

Load disconnected. Protection indicator

Built-in amplifier unit that caused the failure halted.

Load disconnected. Protection indicator

Peak indicator lights. Remove overload. Connecting a correct load

automatically restores normal operation.

Protection indicator lights.

lights.

Four indicators of the corresponding channel extinguish.

lights.

Check speakers and lines for short circuit.

Check the unit for correct ventilation and overload.

Contact the TOA dealer where the unit was purchased.

Turn off the power switch. Correct the load, then switch on the power.

Operation automatically returns to normal when the temperature decreases.

Page 14

13. CLEANING THE FILTER

Step 1. Switch off the unit's power.

Step 2. Remove the ventilation panel as shown in the figure.

Step 3. Detach the filter inside the ventilation panel.

Step 4. Clear the filter of dust.

Step 5. Replace the filter and ventilation panel.

14. DIMENSIONAL DIAGRAM

To protect the input level control from accidental operation, it is recommended to replace the control knob with the supplied tamper-proof cap as illustrated.

12. TAMPER-PROOF CAP ATTACHMENT

Input level control

Ventilation Panel

Tamper-proof cap (accessory)

Ventilation Panel

442 (17.4)

Filter

Detach the panel by pressing on the right side.

22.5 (0.89)

371 (14.61)

404.2 (15.91)

465 (18.31)

482 (18.98)

76.2

(3)

88.4 (3.48)

Unit: mm (inches)

Page 15

15. BLOCK DIAGRAMS

15.1. DA-550F

15.2. DA-500F-HL

CH 1 INPUT

H C

CH 2 INPUT

H C

CH 3 INPUT

H C

CH 4 INPUT

H C

CH 1 TO ALL switch

CH 1 input level control

CH 2 input level control

CH 3 input level control

CH 4 input level control

+4 dB

CH 1 sensitivity selection jumper

10 dB)

(+4 dB/

+4 dB

CH 2 sensitivity selection jumper

10 dB)

(+4 dB/

+4 dB

CH 3 sensitivity selection jumper (+4 dB/

10 dB)

+4 dB

CH 4 sensitivity selection jumper

10 dB)

(+4 dB/

10 dB

OFF

BRIDGE 1 ON/OFF switch

OFF

BRIDGE 2 ON/OFF switch

Current Limiter

Short Detector

Protection Circuit

Current Limiter

Short Detector

Protection Circuit

Current Limiter

Short Detector

Protection Circuit

Current Limiter

Short Detector

Protection Circuit

OUTPUT 1

relay

OUTPUT 2

relay

OUTPUT 3

relay

OUTPUT 4

relay

CH 1 OUTPUT

CH 2 OUTPUT

CH 3 OUTPUT

CH 4 OUTPUT

BRIDGE 1 OUTPUT

BRIDGE 2 OUTPUT

CH 1 INPUT

H C E

CH 2 INPUT

H C E

CH 3 INPUT

H C E

CH 4 INPUT

H C E

CH 1 TO ALL switch

HPF

50 Hz

HPF

50 Hz

HPF

50 Hz

HPF

50 Hz

OFF

CH 1 HPF ON/OFF switch

CH 2 HPF ON/OFF switch

CH 3 HPF ON/OFF switch

CH 4 HPF ON/OFF switch

CH 1 input level control

CH 2 input level control

CH 3 input level control

CH 4 input level control

+4 dB

CH 1 sensitivity selection jumper (+4 dB/

10 dB)

+4 dB

CH 2 sensitivity selection jumper (+4 dB/

10 dB)

+4 dB

CH 3 sensitivity selection jumper

10 dB)

(+4 dB/

+4 dB

CH 4 sensitivity selection jumper

10 dB)

(+4 dB/

10 dB

OFF

BRIDGE 1

ON/OFF switch

OFF

BRIDGE 2

ON/OFF switch

Current Limiter

Short Detector

Protection Circuit

Current Limiter

Short Detector

Protection Circuit

Current Limiter

Short Detector

Protection Circuit

Current Limiter

Short Detector

Protection Circuit

OUTPUT 1

relay

OUTPUT 2

relay

OUTPUT 3

relay

OUTPUT 4

relay

CH 1 OUTPUT

CH 2 OUTPUT

CH 3 OUTPUT

CH 4 OUTPUT

BRIDGE 1 OUTPUT

BRIDGE 2 OUTPUT

Page 16

16. HOW TO USE THE CONTROL/MONITOR TERMINALS

The Control/Monitor terminals on the rear panel permit power ON/OFF control of the individual channels and monitoring for the power ON/OFF status and protection status on each channel, and fan operation status. Prepare the control panel and status monitor display panel separately referring to the descriptions below.

Note

All terminals are electrically isolated from the unit body with the photocouplers.

16.1. Control Terminal (Input)

While the unit's power switch is turned ON, each individual channel's power can be turned ON and OFF from the distant location using this terminal. The power indicator extinguishes only when the all channels' powers are turned off, but otherwise remains lit. Using the power supply, which you need to prepare separately, perform the control by applying DC voltage to the control terminal. This terminal is a photocoupler input, and requires max. 8 mA per control. Note the power capacity of the power supply.

Control voltages are as follows.

16.2. Monitor Terminal (Output)

Indicators on the externally-connected device (status monitor display panel) or relays can be turned on and off in response to the power ON/OFF status, protection status, and fan operation status from the distant location using this terminal. This monitor terminal is a photocoupler open-collector output terminal. Note that it is rated at withstand voltages of 30 V DC and control current of 12 mA or less when ON. At the time of circuit design, consider the control current assuming that 1 V appears at the monitor terminal when ON.

[Example of a circuit]

Control voltage (Vin) Power ON/OFF status on each channel

0 – 3 V DC ON 9 – 14 V DC OFF

Control voltage (Vin) R1 resistance value (rated power)

14 V to under 20 V DC 1 kΩ (0.1 W or more) 20 V to under 30 V DC 3.3 kΩ (0.25 W or more) 30 V to under 50 V DC 5.6 kΩ (0.5 W or more)

When controlling the control terminal with a power supply of 14 V DC or more, connect the specified resistance referring to the table below.

Note: The use of the resistance other than those specified may cause unit failure.

Note

Be sure to connect a diode across the relay in the direction as shown above when connecting to the external relay.

Terminal pin No.

Pin 1 or 4

Pin 7

External DC power

Vin

(Max. 14 V DC)

Terminal pin No.

Pin 1 or 4

Pin 7

External DC power

Vin

(Max. 50 V DC)

When an LED is used

When a relay is used

Terminal pin No.

Pin 2, 3, 5, 6, or 8

Control current:

12 mA or less

Pin 7

External DC power

(Max. 30 V DC)

Control current:

12 mA or less

Terminal pin No.

Pin 2, 3, 5, 6, or 8

Pin 7

External DC power

(Max. 30 V DC)

Page 17

16.3. About Pin 7 of the Control/Monitor Terminals

A ground common to all the control and monitor terminals is assigned to Pin 7. Both Pins 7 of the Control/Monitor terminal for CH1 and CH2, and that for CH 3 and CH4 are internally connected to each other. Pins 7 are isolated from the unit body.

16.5. Connection Cable and Maximum Cable Length

For the connection cable, use a Category 5 twisted pair cable for LAN (CAT5-UTP). The maximum cable length is 600 m (656.17 yd).

16.4. Terminal Pin Arrangement

• About operation and terminal status

• The same information is output from both Pins 8 (fan status output) of the CH1 and CH2 terminal, and the CH3 and CH4 terminal.

• Lighting status of the protection indicator on the front panel matches operation of protection status provided at the monitor terminal.

HI-LEVEL LO-LEVEL

Control terminal (input) 9 – 14 V DC 0 – 3 V DC Monitor terminal (output) OFF ON

Protection indicator (front panel) Light off Light on Protection status (output) OFF ON

Terminal Pin No. Pin name

Unit operation status

HI-LEVEL LO-LEVEL

CH1, 2 CH1 power ON/OFF control (input) CH1 power OFF CH1 power ON

CH1 protection status (output) CH1 normal CH1 protection activated (irregular)

CH1 power ON/OFF status (output) CH1 power OFF CH1 power ON

CH2 power ON/OFF control (input) CH2 power OFF CH2 power ON

CH2 protection status (output) CH2 normal CH2 protection activated (irregular)

CH2 power ON/OFF status (output) CH2 power OFF CH2 power ON

GND (input/output)

––

Fan operation status (output) Fan stop (irregular) Normal

CH3, 4 CH3 power ON/OFF control (input) CH3 power OFF CH3 power ON

CH3 protection status (output) CH3 normal CH3 protection activated (irregular)

CH3 power ON/OFF status (output) CH3 power OFF CH3 power ON

CH4 power ON/OFF control (input) CH4 power OFF CH4 power ON

CH4 protection status (output) CH4 normal CH4 protection activated (irregular)

CH4 power ON/OFF status (output) CH4 power OFF CH4 power ON

GND (input/output)

––

Fan operation status (output) Fan stop (irregular) Normal

876

543

876

543

Page 18

16.6. RJ45 Connector's Pin Arrangement and Cable Color Codes

RJ45 pin No.

Cable color Cable color (for T568B) (for T568A)

Orange/white Green/white

Orange Green

Green/white Orange/white

Blue Blue

Blue/white Blue/white

Green Orange

Brown/white Brown/white

Brown Brown

876

To Control/Monitor terminal

RJ45 pin No.

1 2 3 4 5 6 7 8

Category 5 twisted pair cable for LAN (CAT5-UTP)

Page 19

* 0 dB = 0.775 V

Note: The design and specifications are subject to change without notice for improvement.

Removable terminal plug (3 pins) ........................................ 4

Tamper-proof cap ................................................................ 4

• Accessories

120 V AC, 50/60 Hz Digital class D 480 W (based on UL/CSA standards), 2800 W (rated output 4 Ω),

1650 W (rated output 8 Ω) 4 circuits, +4 dB* (1.23 V, input level control in maximum position),

10 kΩ, electronically-balanced, removable terminal block (3 pins), XLR-3-31 type connector CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)

4 channels: 550 W x 4 (4 Ω), 350 Wx 4 (8 Ω) 2 channels (BRIDGE): 1,100 W x 2 (8 Ω) M4 screw terminal, distance between barriers: 8.8 mm (0.35")

20 – 20,000 Hz (–2 dB, +1 dB)

0.1% (1 kHz), 0.15% (20 – 20,000 Hz) Protection against excessive current flow due to overload, short circuit,

unusual DC voltage output, and heat sink temperature rise (over 100°C) 100 dB (A-weighted) 70 dB (A-weighted) Control input: Power ON/OFF status of the individual channels

Photocoupler input

drive voltage: 9 V DC (Min) – 14 V (Max), 12 V (Typ)

Monitor output: Power ON/OFF status of the individual channels, Protection

status of the individual channels, Fan operation status P

hotocoupler open collector output

withstand voltage: 30 V DC control current: under 12 mA

Connector: RJ45 connector x 2 Connection cable: Category 5 twisted pair cable for LAN (CAT5-UTP) Maximum cable distance: 600 m (656.17 yd)

Power (blue) x 1, Input (green) x 4, Output (yellow) x 4, Peak (red) x 4, Protect (red) x 4

Forced air cooling –10°C to +40°C (14°F to 104°F) Under 90% RH (no condensation) Panel: Aluminum, black, alumite

Case: Plated steel sheet

482. (w) x 88.4 (h) x 404.2 (d) mm (18.98" x 3.48" x 15.91")

8.8 kg (19.4 lb)

Power Source Amplification system Power Consumption

Input

Rated Output

Frequency Response Total Harmonic Distortion Protection circuit

S/N Ratio Crosstalk Control/Monitor

LED Indicator

Cooling Operating Temperature Operating Humidity Finish

Dimensions Weight

17. SPECIFICATIONS

17.1. DA-550F CU

Page 20

133-22-102-60

URL: http://www.toa.jp/

* 0 dB = 0.775 V

Note: The design and specifications are subject to change without notice for improvement.

Removable terminal plug (3 pins) ........................................ 4

Tamper-proof cap ................................................................ 4

• Accessories

120 V AC, 50/60 Hz Digital class D 480 W (based on UL/CSA standards), 2600 W (rated output 8 Ω x 4) 4 circuits, +4 dB* (1.23 V, input level control in maximum position),

10 kΩ, electronically-balanced, Removable terminal block (3 pins), XLR-3-31 type connector CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch) HPF ON/OFF switch (–6 dB/oct, cut off frequency 50 Hz)

4 channels: 500 W x 4 (9.8 Ω, 70 V line), 550 Wx 4 (8 Ω), 100 W x 4 (4 Ω) 2 channels (BRIDGE): 1,000 W x 2 (19.6 Ω), 1,100 W 2 (16 Ω) M4 screw terminal, distance between barriers: 8.8 mm (0.35")

20 – 20,000 Hz (–2 dB, +1 dB): HPF OFF 50 – 20,000 Hz (–3 dB, +1 dB): HPF ON

0.1% (1 kHz)

0.3% (20 – 20,000 Hz): HPF OFF

0.3% (100 – 20,000 Hz): HPF ON Protection against excessive current flow due to overload, short circuit,

unusual DC voltage output, and heat sink temperature rise (over 100°C) 100 dB (A-weighted) 70 dB (A-weighted) Control input: Power ON/OFF status of the individual channels

Photocoupler input

drive voltage: 9 V DC (Min) – 14 V (Max), 12 V (Typ)

Monitor output: Power ON/OFF status of the individual channels, Protection

status of the individual channels, Fan operation status Photocoupler open collector output

withstand voltage: 30 V DC, control current: under 12 mA

Connector: RJ45 connector x 2 Connection cable: Category 5 twisted pair cable for LAN (CAT5-UTP) Maximum cable distance: 600 m (656.17 yd)

Power (blue) x 1, Input (green) x 4, Output (yellow) x 4, Peak (red) x 4, Protect (red) x 4

Forced air cooling –10°C to +40°C (14°F to 104°F) Under 90% RH (no condensation) Panel: Aluminum, black, alumite

Case: Plated steel sheet

482. (w) x 88.4 (h) x 404.2 (d) mm (18.98" x 3.48" x 15.91")

8.8 kg (19.4 lb)

Power Source Amplification system Power Consumption Input

Rated Output

Frequency Response

Total Harmonic Distortion

Protection circuit

S/N Ratio Crosstalk Control/Monitor

LED Indicator

Cooling Operating Temperature Operating Humidity Finish

Dimensions Weight

17.2. DA-500F-HL CU