Instruction/ maintenance manual of the product DA-500F-HL CU Toa
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OPERA TING INSTRUCTIONS MUL TICHANNEL 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.
2 1. IMPORT ANT 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.
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.
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.
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.
6 6 7. NOMENCLA TURE AND FUNCTIONS [Front] 1 2 3 4 5 DA-550F DA-500F-HL 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.
7 7 [Rear] DA-550F 6 7 9 12 DA-500F-HL 6 7 12 13 9 8 8 9 9 11 10 10 11 10 10 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.
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.
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.
10 Switch BRIDGE 1 BRIDGE 2 CH 1 mode ON ON ON Setting CH1 CH1 CH2 CH3 CH4 BRIDGE 1 BRIDGE 2 Speaker output terminals 8 Ω - + - + [1 input - 2 outputs] 8 Ω DA-550F 16 – 19.
11 CH1 - + CH2 - + Speaker output terminals Switch BRIDGE 1 BRIDGE 2 CH 1 mode OFF ON OFF Setting 4 – 8 Ω 4 – 8 Ω 8 Ω CH1 CH2 CH3 CH1 CH2 CH3 CH4 BRIDGE 2 - + [3 inputs - 3 outputs (1) ] DA-550F 4 – 9.
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.
13 1 1. PROTECTION OPERA TION LIST Failure Protection Operation Indicator Remedy Recovery Overcurrent due to overload Current limiter activated when impedance drops below the specified value. Peak indicator lights. Remove overload. Connecting a correct load automatically restores normal operation.
14 13. CLEANING THE FIL TER 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.
15 15. BLOCK DIAGRAMS 15.1. DA-550F H C CH 1 INPUT E H C CH 2 INPUT E Current Limiter Short Detector Protection Circuit OUTPUT 1 relay CH 1 OUTPUT CH 2 OUTPUT +4 dB - 10 dB CH 1 sensitivity selection .
16. HOW TO USE THE CONTROL/MONIT OR 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.
16.3. About Pin 7 of the Control/Monitor T erminals 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.
16.6. RJ45 Connector's Pin Arrangement and Cable Color Codes Category 5 twisted pair cable for LAN (CAT5-UTP) RJ45 pin No. To Control/Monitor terminal 1 2 5 6 3 4 7 8 RJ45 pin No.
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 ................................................
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 .............
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