TOA Electronics A-9120S Stereo Amplifier User Manual
Contents
1. Power amplifiers DA 550F 500FH Perforated panel Power amplifiers DA 550F 500FH 1U size 44 5 mm reference size 6 NOMENCLATURE AND FUNCTIONS Front 9 DA 550F id TOA CH 1 BRIDGE 1 CH S BRIDGE 2 POWER MULTICHANNEL POWER AMPLIFIER DA 500FH 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 When a bridge connection is made DA 550F only When Channels 1 and 2 are brid2. HH Wee c EM CONTROL MONITOR 3 ol a 0 2 ati 3 Z X D 4 r Z N L Y D CH2 BES OUTPUTS I 1 5 50 99 55 9 9 on more So Se SIE e T I LL c gt X 7 8 C9 63 C9 e 2 B 9 1008 89 ed 9 mes e 2 Se Se Se BADGE 2 canoer 2 0 D DA 500FH CONTROL MONITOR CH3 4 CH1 2 ce OUTPUTS 100V CH3 CH2 CH1 5000 00 APR o O oF 22 cH 2 E a V 3y x GO INPUTS Z T Hoe uis IM I a 1659 I CERTUM M X 7 9 69 69 69 a m CH4 e e CH2 e on AC inlet Connect the supplied power cord to this inlet The socket outlet shall be installed near the equipment and the plug disconnecting device shall be easily accessible 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 15 How to Use the Control M
3. socket H1 H2 H H4 Step 3 Replace the detached top cover Front panel M VHS 2 Viewed from top with the top cover detached 10 PROTECTION OPERATION LIST Failure Protection Operation Indicator Recovery Overcurrent due Current limiter activated Peak indicator lights Remove overload Connecting a correct load to overload when impedance drops automatically restores below the specified normal operation value Short circuit Current limiter activated Protection indicator Check speakers and Turn off the power switch Load is disconnected lights lines for short circuit Correct the load then Switch on the power Temperature rise Load disconnected Protection indicator Check the unit for Operation automatically at power amp lights correct ventilation and returns to normal when heat sink overload the temperature decreases over 100 C Temperature rise Built in amplifier unit Four indicators of at power supply that caused the failure the corresponding heat sink halted channel extinguish over 80 C Abnormal DC Load disconnected Protection indicator Contact the TOA dealer where the unit was voltage output lights purchased 11 TAMPER PROOF CAP ATTACHMENT To protect the input level control from accidental operation
4. BRIDGE 1 BRIDGE 2 CH 1 mode 1 input 3 outputs 1 CH2 CH1 Speaker output terminals Chis e gait BRIDGE 1 separe d R CH2 BRIDGE 2 e 1 CH3 I Y Et cq BRIDGE 1 Y BRIDGE 2 CH 1 mode CH3 27 14 CH4 r 7 1 2 When using the DA 500FH 4 inputs 4 outputs factory preset EM Speaker output terminals CH1 CH 1 mode 2 200 CH2 o 122 CH3 200 chae Gt CH4 eme CH4 o 27 20 Q CH1 i Speaker output terminals CH 1 mode e d CH3 20 Q ro CH4 20 Q 20 Q 10 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 7mm Connector connections Step 1 Loosen the term
5. CH 1 CH 1 INPUT OUTPUT OUTPUT 1 r jo relay 1 71 E tO lt gt oH 77 Current Limiter p Short Detector Protection Circuit ME BRIDGE 1 CH 1 sensitivity OUTPUT 2 INPUT selection jumper oe OUTPUT2 1 T 44 dB 10 dB CN Lii relay H o 1 mO fof us gt E o gt i um 6 Current Limiter L CH2 1 BRIDGE 1 Short Detector I OUTPUT CH2 ON OFF switch Eo i input level pel 10 dB Protection Circuit control CH E OUTPUT f sensitivity 1 CAS INPUT selection jumper OUTPUT3 o H 4 dB 10 dB relay i 71 o D gt od o Current Limiter VT 77 CH3 Short Detector Log cb a Protection Circuit bd BRIDGE 2 8 sensitivity OUTPUT CH4 INPUT i Lo selection jumper OUTPUT 4 H 4 dB 10 dB ON relay o ies 1 owi on E o 1 gt 29 1 ema poe Current Limiter OFF L 1 CH4 CH 1 TO ALL BRIDGE 2 Short Detector OUTPUT Switch CH4 ON OFF switch input level Protection Circuit control CH 4 sensitivity selection jumper 4 dB 10 dB CH 1 INPUT OUTPUT 1 j C o relay 71 mOi E o mE CH 1 4 3o i OUTPUT Current Limiter e pie CH 1 1 4 dB Short Detector it io
6. 4 2 Strip 10 mm of insulative jacket from the end of the speaker cable as shown in the figure at right 1 4 3 Connect speaker cables to the output terminals 4 4 Replace the output terminal cover in place Be sure to replace the unit s terminal cover after connection completion WARNING Because high voltage is generated at the speaker output terminals never touch these terminals to avoid electric shock DA 500FH only 7 1 Switch Settings and Speaker Connections 7 1 1 When using the DA 550F 4 inputs 4 outputs factory preset CH4 CH3 CH2 CH1 BRIDGE 1 BRIDGE 2 1 mode Speaker output terminals 4 80 1 input 4 outputs CHI HE BRIDGE 1 2 BRIDGE 2 FT 1 mode I CH3 TS CH4 7 CH1 1 BRIDGE 1 Y cue iC BRIDGE 2 CH 1 mode CH3 Y 18 TEM CH CH1 BRIDGE 1 Y 2 BRIDGE 2 CH 1 mode CH3 Z Y E BRIDGE 1 BRIDGE 2 BRIDGE 2 CH 1 mode
7. 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 Control voltage Vin Power ON OFF status on each channel Tatniseli p No 0 3VDC ON Pin 1 or 4 o v External DC power I Max 14 V DC 9 14 V DC OFF Pin 7 O 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 Control voltage Vin R1 resistance value rated power Terminal pin No R1 14 V to under 20 V DC 1 0 1 W or more Pin 1 or 4 Exiemal DC power 20 V to under 30 V DC 3 3 0 25 W or more Vin Max 50 V DC 30 V to under 50 V DC 5 6 kQ 0 5 W or more Pin 7 15 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
8. stereo amplifier or as a 3 channel amplifier comprised of 1 100 W 8 550 W 4 Q x 2 channels The DA 500FH Multichannel Power Amplifier features high power handling of 500 W 100 V line x 4 channels 20 output and durability Their wide range of applications include stores and permanent sound systems 3 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 reference size 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
9. 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 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 5 INSTALLATION PRECAUTIONS The supplied rack mounting screws can be used for the TOA equipment rack only Do not use them for other racks A CAUTION When installing the unit in a rack other than that of TOA be sure to use the screws with a diameter of over 5 mm and length of over 12 mm to mount the unit Failure to do so may cause personal injury The supplied power supply cord is designed for exclusive use with this unit Never use it with other equipment 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
10. 0 240 V AC 50 60 Hz Amplification system Digital class D Power Consumption 460 W based on EN standards 2350 W rated output 20 4 Input 4 circuits 4 dB 1 23 V input level control in maximum position 10 kQ 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 M4 screw terminal distance between barriers 8 8 mm Frequency Response 50 20 000 Hz 3 dB 1 dB Total Harmonic Distortion 0 1 1 kHz 0 3 100 20 000 Hz Protection circuit Protection against excessive current flow due to overload short circuit unusual DC voltage output and heat sink temperature rise over 100 C S N Ratio 100 dB A weighted Crosstalk 70 dB A weighted Control Monitor Control input Power ON OFF status of the individual channels Photocoupler input drive voltage 9 V DC Min 14 V Max 12 V Typ 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 Shielded Category 5 twisted pair cable for LAN CAT5 STP Maximum cable distance 600 m Monitor output LED Indicator Power blue x 1 Input green x 4 Output
11. OR TERMINALS 15 1 Control Terminal Input n n 15 2 Monitor Terminal Output I a 15 3 About Pin 7 of the Control Monitor Terminals 15 4 Terminal Pin Arrangement sse enne ennemis 15 5 Connection Cable and Maximum Cable Length 15 6 RJ45 Connector s Pin Arrangement and Cable Color Codes 16 SPECIFICATIONS 16 1 DA 550F CE 16 2 08 500 Gu 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 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 AN WARNING A CAUTION Indicates a potentially hazardous situation which if mishandled could result in death or serious personal i
12. Zu OPERATING INSTRUCTIONS MULTICHANNEL POWER AMPLIFIERS DA 550F CE DA 500FH CE Note The figure shows the DA 550F 9 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 TOA Corporation TABLE OF CONTENTS 1 SAFETY PRECAUTIONS 2 GENERAL DESCRIPTION esent 3 FEATURES ai acude oi det Ligen 4 HANDLING PRECAUTIONS 1 eee 5 INSTALLATION PRECAUTIONS 6 NOMENCLATURE AND FUNCTIONS 7 SETTINGS AND CONNECTIONS 7 1 Switch Settings and Speaker Connections 7 1 1 When using the 550 u u 7 1 2 When using the DA 500FH esee mene 8 REMOVABLE TERMINAL PLUG CONNECTION 9 INPUT SENSITIVITY SETTING eene 10 PROTECTION OPERATION LIST 11 TAMPER PROOF CAP ATTACHMENT 12 CLEANING THE FILTER te att ib aspi 13 DIMENSIONAL DIAGRAM 7 14 BLOCK DIAGRAMS 14 1 DA 550F EE 14 2 0 ta tfe Ea ien DR us 15 HOW TO USE THE CONTROL MONIT
13. d 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 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 The supplied rack mounting screws can be used 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 in the wall AC outlet a fire may result Clean it periodically In addition insert the plug in the wall outlet securely for the TOA equipment rack only Do not use them for other racks When installing the unit in a rack other than that of TOA be sure to use the screws with a diameter of over 5 mm and length of over 12 mm to mount the unit When connecting the unit s pow
14. 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 When an LED is used When a relay is used Control current External DC power Control current External DC power 12 mA or less Max 30 V DC 12 mA or less Max 30 V DC Terminal pin No Terminal pin No Pin 2 3 5 6 or 8 Pin 2 3 5 6 or 8 Pin7 Pin 7 Note Be sure to connect a diode across the relay in the direction as shown above when connecting to the external relay 15 16 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 CH1 2 Pin No Pin name CH1 power ON OFF control input HI LEVEL CH1 power OFF LO LEVEL 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 c
15. e current flow due to overload short circuit unusual DC voltage output and heat sink temperature rise over 100 C S N Ratio 100 dB A weighted Crosstalk 70 dB A weighted Control Monitor Control input Power ON OFF status of the individual channels Photocoupler input drive voltage 9 V DC Min 14 V Max 12 V Typ 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 Shielded Category 5 twisted pair cable for LAN CAT5 STP Maximum cable distance 600 m Monitor output LED Indicator Power blue x 1 Input green x 4 Output yellow x 4 Peak red x 4 Protect red x 4 Cooling Forced air cooling Operating Temperature 10 C to 40 C Operating Humidity Under 90 RH no condensation Finish Panel Aluminum black alumite Case Plated steel sheet Dimensions 482 w x 88 4 h x 404 2 d mm Weight 0 dB 0 775 V 9 kg Note The design and specifications are subject to change without notice for improvement Accessories Power cord 2 m Removable terminal plug 3 pins 4 Rack mounting screw with plain washer 5 x 12 Tamper proof cap 16 2 DA 500FH Power Source 22
16. er cord to an AC outlet use the AC outlet with current capacity allowable to the unit 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 An all pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical installation of the building A When the Unit is in Use e 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 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 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 2 GENERAL DESCRIPTION TOA s DA 550F Multichannel Power Amplifier features high power handling of 550 W x 4 channels 4 output or 350 W x 4 channels 8 output and durability Besides its channels 1 and 2 and 3 and 4 are made available for bridge connection individually allowing it to be used as a 1 100 W 8 Q x 2 channels
17. ge 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 e When Channels 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 4 Ventilation panel Air Vent A filter is located inside the ventilation panel To clean the filter remove the ventilation panel See p 13 Cleaning the Filter 5 Indicators 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 O load DA 550F or 20 O load DA 500FH 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 12 Protection Operation List When the power is switched on this indicator lights for about 2 seconds and then extinguishes o D DA 550F qb dO
18. inal screw then insert the cable Step 2 Retighten the terminal screw Pull on the cable to ensure it is securely connected Slotted screwdriver 2 Tightens Loosens 1 Terminal screw Earth Removable terminal plug Cold Shielded cable Tip Recommended slotted screwdriver type Screwdriver with blade that is 3 mm in width 3 Bit shape 3 mm gt 1 11 12 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 When set to 10 dB Input Sensitivity Step 2 Insert the jumper socket into either 4 dB or 10 dB position as shown at right gP 9 0L gp r gp 0L When a bridge connection is made Jumper DA 550F only socket Set the input sensitivity with the CH1 Factory preset jumper socket when Channels 1 and 2 are J bridge connected Similarly set the input sensitivity with the CH3 jumper socket when Channels 3 and 4 are bridge connected Input sensitivity settings for the CH2 and CH4 are disabled
19. it is recommended to replace the control knob with the supplied tamper proof cap as illustrated 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 panel Detach the panel by pressing Filter on the right side 13 DIMENSIONAL DIAGRAM T 442 Y Dnran _ A LI N 5 f nu KS a QU Q Qe 8 Unit mm 465 M 482 Y 13 14 14 BLOCK DIAGRAMS 14 1 DA 550F switch CH4 Current Limiter Short Detector
20. l Protection Circuit CH 1 sensitivity bd selection jumper OUTPUT2 4 dB 10 dB relay CH2 Rea PX OUTPUT Current Limiter i EE I CH2 el 44 dB Short Detector 10 dB Protection Circuit 19 contro jl I CH 2 sensitivity selection jumper OUTPUT3 t 4 dB 10 dB relay IO CH3 o 5 102 OUTPUT Current Limiter D CH3 roll 4 dB Short Detector Sta lo 10 dB Protection Circuit 8 sensitivity selection jumper it 4 dB 10 dB o i CH4 o io OUTPUT 17 7 kasd CH 1 TO ALL input level control 4 dB 10 dB CH 4 sensitivity selection jumper 4 dB 10 dB Protection Circuit 15 HOW 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 grounded to the unit chassis 15 1 Control Terminal Input While the unit s power switch is turned ON
21. l 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 earth 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 E BRIDGE 2 por cod HOE Hoe OUTPUTS L 1 Leg 1 QA wnwwiso BRIDGE 2 BRIDGE 1 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 4 Connect speakers to the Speaker output terminals 4 1 Unscrew the output terminal cover
22. nection Cable and Maximum Cable Length For the connection cable use a Shielded Category 5 twisted pair cable for LAN CAT5 STP The maximum cable length is 600 m 15 6 RJ45 Connector s Pin Arrangement and Cable Color Codes To Control Monitor terminal Cable color RJ45 pin No for T568B Orange white Cable color for T568A Green white RJ45 pin No Orange Green 1 Green white Orange white Blue Blue Blue white Blue white Green Orange Brown white Brown white Brown Brown Shielded Category 5 twisted pair cable for LAN Shield uu CAT5 STP 17 18 16 SPECIFICATIONS 16 1 DA 550F Power Source 220 240 V AC 50 60 Hz Amplification system Digital class D Power Consumption 480 W based on EN standards 2750 rated output 4 4 1550 W rated output 8 O x 4 Input 4 circuits 4 dB 1 23 V input level control in maximum position 10 kQ 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 4 350 W x 4 8 2 channels BRIDGE 1 100 W x 2 8 Q 4 screw terminal distance between barriers 8 8 mm Frequency Response 20 20 000 Hz 2 dB 1 dB Total Harmonic Distortion 0 1 1 kHz 0 15 20 20 000 Hz Protection circuit Protection against excessiv
23. njury Indicates a potentially hazardous situation which if mishandled could result in moderate or minor personal injury and or property damage A WARNING 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 high impedance speaker terminals never touch these terminals to avoid electric shock DA 500FH only External wiring connected to the terminals marked with 1 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 thi
24. onitor Terminals Speaker output terminals with a terminal cover OUTPUTS DA 550F OUTPUTS 100 V DA 500FH Connect speaker cables to these terminals Input terminals INPUTS Electronically balanced input terminals Each removable terminal block 3 pins is internally connected in parallel to the corresponding XLR type connector e 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 Caution when using an XLR type plug 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 DA 550F only BRIDGE 1 BRIDGE 2 ON OFF Used when bridge connecting the unit s Channels 1 and 2 and Channels 3 and 4 See p 8 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 11 CH 1 mode ON OFF switch CH 1 TO ALL ON OFF Setting this switch to ON pressed in transmits the Channe
25. ontrol 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 6 6 Fan operation status output power ON OFF control input Fan stop irregular CH3 power OFF Normal CH3 power ON CH3 protection status output normal 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 GND input output 6 Fan operation status output About operation and terminal status Control terminal input HI LEVEL 9 14 V DC Fan stop irregular LO LEVEL 0 3VDC Monitor terminal output OFF ON Normal 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 Protection indicator front panel Light off Light on Protection status output OFF ON 15 5 Con
26. s 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 itis 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 A CAUTION 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 connecte
27. yellow x 4 Peak red x 4 Protect red x 4 Cooling Forced air cooling Operating Temperature 10 C to 40 C Operating Humidity Under 90 RH no condensation Finish Panel Aluminum black alumite Case Plated steel sheet Dimensions 482 w 88 4 h x 404 2 4 mm Weight 0 dB 0 775 V 9 kg Note The design and specifications are subject to change without notice for improvement Accessories Power cord 2 m Removable terminal plug 3 pins 4 Rack mounting screw with plain washer 5 x 12 4 Tamper proof cap 19 Traceability Information for Europe EMC directive 2004 108 Manufacturer Authorized representative TOA Corporation TOA Electronics Europe GmbH 7 2 1 Minatojima Nakamachi Chuo ku Kobe Hyogo Suederstrasse 282 20537 Hamburg Japan i Germany p URL http www toa jp Corporation
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