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OPERATING INSTRUCTIONS
MULTICHANNEL POWER AMPLIFIERS
DA-550F CE
DA-500FH CE
Note: The figure shows the DA-550F.
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.
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TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ............................................................................... 3 2. GENERAL DESCRIPTION ............................................................................. 4 3. FEATURES .......................................................................................................... 4 4. HANDLING PRECAUTIONS .......................................................................... 5 5. INSTALLATION PRECAUTIONS .........................
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1. 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
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• The unit is designed exclusively to be mounted in • Contact your TOA dealer as to the cleaning. If dust an equipment rack. Be sure to follow the is allowed to accumulate in the unit over a long instructions below when rack-mounting the unit. period of time, a fire or damage to the unit may Failure to do so may cause a fire or personal injury. result. · Install the equipment rack on a stable, hard floor. • If dust accumulates on the power supply plug or in Fix it with anchor bolts or take oth
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4. 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 filt
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6. NOMENCLATURE AND FUNCTIONS [Front] 3 4 5 2 1 DA-550F 3 4 5 2 1 DA-500FH 1. Power switch [ON/OFF] 4. Ventilation panel (Air Vent) Power is switched on and off with each depression A filter is located inside the ventilation panel. of this switch. To clean the filter, remove the ventilation panel. (See p. 13; Cleaning the Filter.) 2. Power indicator [POWER] Lights blue when the power is switched on. 5. Indicators [INPUT, OUTPUT, PEAK, PROTECT] The indicators are as follows from left to right:
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[Rear] 6 7 8 9 9 10 11 10 DA-550F 12 6 7 8 9 9 11 DA-500FH 12 6. AC inlet 10. BRIDGE ON/OFF switches (DA-550F only) Connect the supplied power cord to this inlet. [BRIDGE 1, BRIDGE 2, ON / OFF] The socket-outlet shall be installed near the Used when bridge-connecting the unit's equipment and the plug (disconnecting device) Channels 1 and 2, and Channels 3 and 4. shall be easily accessible. (See p. 8; Settings and Connections.) • 4-channel input mode 7. Control/Monitor terminals Set both B
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7. SETTINGS AND CONNECTIONS CH 1 mode ON/OFF switch BRIDGE 2 ON/OFF switch BRIDGE 1 ON/OFF switch (DA-550F only) (DA-550F only) [Rear panel] Speaker output terminals Input terminals Note: The figure shows the DA-550F. (with a terminal cover) Step 1. Switch off the unit's power. Step 2. Set the BRIDGE ON/OFF switches (DA-550F only) and CH 1 mode ON/OFF switch. Step 3. Connect the sound source equipment to the Input terminals. Note: Refer to p. 11 for the removable terminal plug connection. Step
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[1 input - 4 outputs] CH4 CH3 CH2 CH1 - + - + - + - + CH1 Switch Setting Speaker output terminals CH1 BRIDGE 1 OFF CH2 4 – 8 Ω BRIDGE 2 OFF CH 1 mode ON 4 – 8 Ω CH3 4 – 8 Ω CH4 4 – 8 Ω [2 inputs - 2 outputs] CH1 Switch Setting Speaker output terminals CH1 BRIDGE 1 ON - + - + BRIDGE 2 BRIDGE 1 CH2 BRIDGE 2 ON CH 1 mode OFF 8 Ω CH3 CH3 8 Ω CH4 [1 input - 2 outputs] CH1 Switch Setting Speaker output terminals CH1 BRIDGE 1 ON - + - + BRIDGE 2 BRIDGE 1 CH2 BRIDGE 2 ON CH 1 mode ON 8 Ω CH3 8 Ω CH4 [3
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[1 input - 3 outputs (1)] CH2 CH1 - + - + CH1 Switch Setting Speaker output terminals CH1 BRIDGE 1 OFF - + BRIDGE 2 CH2 4 – 8 Ω BRIDGE 2 ON CH 1 mode ON 4 – 8 Ω CH3 8 Ω CH4 [1 input - 3 outputs (2)] CH4 CH3 - + - + CH1 Switch Setting Speaker output terminals CH1 BRIDGE 1 ON - + BRIDGE 1 CH2 BRIDGE 2 OFF 8 Ω CH 1 mode ON CH3 4 – 8 Ω CH4 4 – 8 Ω 7.1.2. When using the DA-500FH [4 inputs - 4 outputs] (factory-preset) CH4 CH3 CH2 CH1 - + - + - + - + CH1 Switch Setting Speaker output terminals CH1 CH
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8. 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 20 mm Connector connections Step 1. Loosen the terminal screw, then insert the cable. Step 2. Retighten the terminal screw. (Pull on the ca
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9. INPUT SENSITIVITY SETTING The input sensitivity for each channel can be set to either +4 dB (factory preset) or –10 dB. 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. Step 1. Unscrew 9 screws securing the top cover of the unit, then detach it. [When set to +4 dB] [Whe
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11. TAMPER-PROOF CAP ATTACHMENT 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. Input level control Tamper-proof cap (accessory) 12. 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 p
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14. BLOCK DIAGRAMS 14.1. DA-550F CH 1 CH 1 INPUT OUTPUT OUTPUT 1 H relay C + E - Current Limiter +4 dB Short Detector CH 1 input level -10 dB Protection Circuit BRIDGE 1 control OUTPUT CH 1 sensitivity CH 2 INPUT OUTPUT 2 selection jumper ON relay (+4 dB/-10 dB) H + C - E Current Limiter OFF CH 2 BRIDGE 1 Short Detector OUTPUT +4 dB ON/OFF switch CH 2 Protection Circuit input level -10 dB CH 3 control CH 2 sensitivity OUTPUT CH 3 INPUT selection jumper OUTPUT 3 (+4 dB/-10 dB) relay H + C E - Cu
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15. 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. Notes • All terminals are electrically isolated from the unit body with the photocouplers. • A shielded wire of the connection cable is g
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15.3. 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. 15.4. Terminal Pin Arrangement Unit operation status Terminal Pin No. Pin name HI-LEVEL LO-LEVEL CH1, 2 CH1 power ON/OFF control (input) CH1 power OFF CH1 power ON 1 CH1 protection status (output) CH1 no
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15.6. RJ45 Connector's Pin Arrangement and Cable Color Codes To Control/Monitor terminal Cable color Cable color RJ45 pin No. (for T568B) (for T568A) RJ45 pin No. Orange/white Green/white 1 1 Orange Green 2 2 Green/white Orange/white 3 3 Blue Blue 4 4 5 Blue/white Blue/white 5 6 Green Orange 6 7 8 Brown/white Brown/white 7 Shield Brown Brown 8 Shield –– Shielded Category 5 twisted pair cable for LAN (CAT5-STP) 17
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16. SPECIFICATIONS 16.1. DA-550F CE Power Source 220 – 240 V AC, 50/60 Hz Amplification system Digital class D Power Consumption 480 W (based on EN standards), 2750 W (rated output 4 Ω x 4), 1550 W (rated output 8 Ω x 4) Input 4 circuits, +4 dB* (1.23 V, input level control in maximum position), 10 k Ω, 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) Rated Output 4 channels: 550 W x 4 (4 Ω), 350 W
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16.2. DA-500FH CE Power Source 220 – 240 V AC, 50/60 Hz Amplification system Digital class D Power Consumption 460 W (based on EN standards), 2350 W (rated output 20 Ω x 4) Input 4 circuits, +4 dB* (1.23 V, input level control in maximum position), 10 k Ω, 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) Rated Output 4 channels: 500 W x 4 (20 Ω) M4 screw terminal, distance between barriers: 8.8 mm Fr
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Traceability Information for Europe (EMC directive 2004/108/EC) Manufacturer: Authorized representative: TOA Corporation TOA Electronics Europe GmbH 7-2-1, Minatojima Nakamachi, Chuo-ku, Kobe, Hyogo, Suederstrasse 282, 20537 Hamburg, Japan Germany URL: http://www.toa.jp/ 133-22-103-10
