Page 2 - IMPORTANT SAFETY INSTRUCTIONS; FCC REQUIREMENTS
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 instruc...
Page 3 - SAFETY PRECAUTIONS; Safety Symbol and Message Conventions; WARNING
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 isspecified may result...
Page 4 - When the Unit is in Use; GENERAL DESCRIPTION
4 • The unit is designed exclusively to be mounted in a n e q u i p m e n t r a c k . B e s u r e t o f o l l o w t h einstructions 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...
Page 5 - HANDLING PRECAUTIONS; clogged, heat will become trapped inside the enclosure.; INSTALLATION PRECAUTIONS; CAUTION
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. ...
Page 6 - NOMENCLATURE AND FUNCTIONS; Lights blue when the power is switched on.; Input level controls; Adjust the input level of each channel.; When a bridge connection is made; • When Channels 1 and 2 are bridge-connected
6 6 7. NOMENCLATURE AND FUNCTIONS [Front] 1 2 3 4 5 DA-550FDA-500F-HL 1. Power switch [ ON/OFF] Power is switched on and off with each depressionof 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] Ad...
Page 7 - Connect speaker cables to these terminals.; • 4-channel input mode; Set both BRIDGE 1 and 2 switches to ON.; Note; Caution when using an XLR type plug
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 theequipment and the plug (disconnecting device)shall be easily accessible. 7. Control/Monitor terminals [CONTROL/MONITOR] Connecting external equi...
Page 8 - This terminal is not for protective ground.
8 11. CH 1 mode ON/OFF switch [CH 1 TO ALL, ON / OFF] Setting this switch to ON (pressed in) transmitsthe Channel 1 input signal to all channels. Outputsignal levels can be individually adjusted witheach channel's input level control (3). Note Be sure to first turn off the power switch whenchanging ...
Page 9 - SETTINGS AND CONNECTIONS
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 HzFLAT: OFF Step 4. Connect the sound source equipment to the Input terminals. Note: Refer to p. 12...
Page 10 - Switch Settings and Speaker Connections
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 – 19.6 Ω 16 – 19.6 Ω DA-500F-HL BRIDGE 1 BRIDGE 2 Speaker output terminals Switch BRIDGE 1 BRIDGE 2 CH 1 mode ON ON OFF Setting 8 Ω 8...
Page 12 - Connector connections; Loosen the terminal screw, then insert the cable.; Tip; REMOVABLE TERMINAL PLUG CONNECTION; Cautions; • Use cables of AWG 12 – 24.; Cable end treatment
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 Tightens Loosens Termina...
Page 13 - When a bridge connection is made; Replace the detached top cover.
13 11. PROTECTION OPERATION 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. Sho...
Page 14 - CLEANING THE FILTER; Remove the ventilation panel as shown in the figure.; DIMENSIONAL DIAGRAM
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. Detach the panel by pressing on the...
Page 16 - HOW TO USE THE CONTROL/MONITOR TERMINALS; Control voltages are as follows.
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 andmonitoring for the power ON/OFF status and protection status on each channel, and fan operation status.Prepare the control panel and status monitor d...
Page 17 - Connection Cable and Maximum Cable Length
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 internallyconnected to each other.Pins 7 are isolated from the unit body. 16.5. ...
Page 19 - • Accessories
19 * 0 dB = 0.775 V Note: The design and specifications are subject to change without notice for improvement. Removable terminal plug (3 pins) ........................................ 4Tamper-proof cap ................................................................ 4 • Accessories 120 V AC, 50/60 H...
Page 20 - Rated Output
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) ........................................ 4Tamper-proof cap ..................................................................