DA 250-P
Contents
1. 23 DA 250 User manual 1 0 4 6 FACTORY RESET The amplifier allows to reset all the parameters stored into the internal microchip to the original factory configuration to enable this function remove the TOP cover and set JP3 jumper carrying out the procedure as following FACTORY RESET 2 5 POWER AMPLIFIER FACTORY RESET 5 OPEN STAND BY OFF OPEN NORMAL OPERATION JP4 CLOSED STAND BY AFTER 30 CLOSED POWER CYCLE RESET MOM 5 CLOSED STAND BY AFTER 120 MN 2 OPEN NORMAL 0 10V CLOSED INVERTED 10 0V FAULT RELAY JP1 OPEN NORMALLY OPEN JP1 CLOSED NORMALLY CLOSED 3 POWER CYCLE Switch on the amplifier for 5 seconds with JP3 closed than switch it off SETTING Put JP3 back open as in origin Page 24 DA 250 User manual 1 0 5 Protections 5 1 Speakers protection The DA250 P has output protection which disconnects the speakers in case of amplifier fault At the power on the device analyzes the voltages supplies verifies the optimal working of the final stages of amplification and later that the speaker connections are activated 5 2 Thermal protection When the amplifier internal temperature reaches high levels the cooling fan will be activated with variable speed depending on the temperature In case the amplifiers reach the maximum allowed temperature the thermal protection will be ac2. i REMOTE 20 50 i LINEAR POT i Page 13 DA 250 User manual 1 0 REMOTE CONTROL INTERNAL CONFIGURATION JP4 JP5 OPEN 5 OFF JP3 OPEN NORMAL OPERATION JP4 CLOSED STAND BY AFTER 30 CLOSED POWER CYCLE RESET JP5 CLOSED STAND BY AFTER 120 MN JP2 OPEN NORMAL 0 10V 2 CLOSED INVERTED 10 0 JP1 OPEN NORMALLY OPEN CLOSED NORMALLY CLOSED O j SETTING JUMPER VCA N cO k Sur sar Sar Sas 0V _y 10V MIN MAX 123 REVERSE 10 0V DEFAULT JP1 JP2 JP3 JP4 JP5 JP6 10V 0V MIN MAX Page 14 DA 250 User manual 1 0 3 4 Inputs selection AUX Besides the standard audio inputs IN CH1 and CH2 the DA250 P provides other audio auxiliary inputs AUX CH1 and CH2 to select those inputs you must use one logical control on the shown connector A IMPORTANT The AUX inputs do not have any sensitivity adjustment and do not have any high pass filter as well AUDIO INPUTS SELECTION CH1 AND CH2 In normal operation the IN CH1 and IN CH2 inputs are enabled CH1 CH2 AUDIO INPUTS SELECTION AUX CH1 AND AUX CH2 The amplifier provides for optical insulated inputs to enable one input you must connect the 10V voltage to the COM pin common inputs To enable the input AUX it is necessary to link it to the ground GND The input sel
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4. nominal impedance inputs For unbalanced signals is mandatory to connect together pin 1 and 2 Page 9 DA 250 User manual 1 0 Input connections advices e Use only hi quality coaxial cables e Unbalanced connections must be as shortest as possible Do not put low level signal cables close to high level ones speakers cables or close to power cables This avoid induction noise introduction e DONOT CONNECT together input and output grounds to avoid ground loops e Switch off the amplifier before make changes on connections e Keep in mind that the system can give instant high power 2 CHANNEL AMPLIFICATION INPUT LEVEL ADJUSTMENT Green Green Level controls on rear panel are SIGNAL independent for each channel in POWER ON p the section GN important Adjust input sensibility until green LED lights on If the LED becomes red input signal is saturated this generates audio distortion to the output Page 10 DA 250 User manual 1 0 3 2 1 channel amplification BRIDGED MODE BRIDGED MODE AMPLIFICATION OUTPUT CONNECTION In BRIDGED mode the outputs are ground lifted also with no signal do not connect i the negative pole to the amplifier chassis BRIDGED MODE AMPLIFICATION INPUT CONNECTION BALANCED INPUT Pin 1 ground Pin 2 reversed phase signal Pin 3 in phase signal UNBALANCED INPUT Pin 1 ground Pin 2 ground Pin 3 in phase signal
5. AN IMPORTANT e 20Kohm nominal impedance inputs e Forunbalanced signals is mandatory to connect together pin 1 and 2 Page 11 DA 250 User manual 1 0 BRIDGED MODE ANPLIFICATION INPUT LEVELS ADJUSTMENT LED CH1 Y Volume adjustment for the section is made by the correspondent input C CH2 channel potentiometer POWER GN important Adjust input sensibility until green LED lights on If the LED becomes red input signal is saturated this generates audio distortion to the output STANDARD BRIDGED MODE SETTING The DA250 P is provided with two separated and independent channels CH1 and 2 or it can operate as BRIDGED mode that is with bridged channel link The operating mode setting is done by the Switch beside the output speaker connector BRIDGED MODE A IMPORTANT such configuration 8 ohms is the minimum impedance It s advisable to disconnect mains cable during mode setting operations to avoid damage to the amplifier Page 12 DA 250 User manual 1 0 3 3 Volume remote control VCA There is one connector for each single channel where connect a potentiometer to allow volume remote control VOLUME REMOTE CONTROL CH1 CH2 ANPLIFICATION REMOTE REMOTE 20 50KQ CH LINEARPOT VOLUME REMOTE CONTROL IN BRIDGED MODE ANPLIFICATION 123
6. High pass filter set to 30 Hz High pass filter set to 100 Hz High pass filter set to 160 Hz Page 21 DA 250 P User manual v 1 0 4 4 GROUND LIFT If there is low frequencies noise on the speakers due to ground loops it s advisable to set DIP SWITCH to OFF position that means to split audio ground from chassis ground GROUND LIFT CONFIGURATION 4K7 0 25W 4 7nF 400V 4K7 0 25W 4 7nF 400V GND LIFT Page 22 DA 250 User manual 1 0 4 5 ACTIVATE STAND BY To optimize the light duty power consumption of the amplifier the DA250 P is provided with automatic Stand By mode after an adjustable time in case of inactivity or lack of input signal To enable this function remove the TOP cover and set the jumpers as follow ACTIVATE STAND BY MODE 7 3 4 5 STAND BY OFF JP4 CLOSED STAND BY AFTER 30 CLOSED POWER CYCLE RESET JPS CLOSED STANDSY AFTER 120MN PANNIA NORMAL 0 10 2 CLOSED INVERTED 10 0V OPEN NORMALLY OPEN JP CLOSED NORMALLY CLOSED O FACTORY RESET OPEN NORMAL OPERATION 9999999099999 JUMPER TIME DESCRIPTION Power amplifier always on Automatic activation of STAND BY after 30 minute of 30 minute inactivity of the amplifier Automatic activation of STAND BY after 120 minute 120 minute of inactivity of the amplifier a
7. USER MANUAL genta ADinout DA 250 P 2 Channel Power Amplifier fF CH1 VCA CH1 VCA IN gt SPEAKEROUTPUI 255555 INCH INCH2 2 RELAY 00001 th 15 Version 1 0 DA 250 User manual 1 0 Warranty DA 250 P is covered by 24 month warranty on its electronics parts starting from the date of purchase This warranty becomes void in case of tampering with the device and in case of work carried out it by people that were not authorized by the manufacturer or by authorized dealer Warranty conditions are those described in the Warranty Rules NOTE responsibility of the purchaser in case of repair under warranty the device must be packed in order to avoid damage during transport and shipped to the manufacturer together with all the accessories Warranty Rules 1 In order to exercise his warranty rights the purchaser must include with the device a copy of the evidence of purchase duly stamped by the dealer bill invoice The warranty lasts 24 months on the electronic parts The warranty is granted at the point of sale or it could be directly requested to the manufacturer The warranty only covers damage to the product which makes it work badly Work under warranty will only mean repairing or replacing free of charge any parts acknowledged being defective d
8. Factory reset Protections 5 1 Speakers protection 5 2 Thermal protection 5 3 Over current and short circuit protection Specifications 6 1 Technical features 6 2 Mechanical dimensions 6 3 Block diagram Page 2 DA 250 User manual 1 0 1 Installation 1 1 Introduction The power amplifier DA 250 P has been developed to satisfy most of the professional audio installations and designed to provide performance with the best stability and reliability permitting a continued use without failure and without the need of maintenance The power stages circuitation is based on the new generation Class D technology that permit to obtain high quality performance low heat dissipation and that permit to keep distortion within a very small range also with a high power supplied Power supply circuit is switch mode with the benefit of high efficiency and reduced weight 1 2 Contents of the DA 250 P Contents of the DA 250 P kit n 1DA 250 device n 1 user manual n 1 power supply cable 1 3 Safety rules Read carefully the following warnings to keep your and others safety for the right use of the device and to avoid warranty invalidation 1 Do not expose the device to rain or high humidity Protect the device from accidental liquid penetration if it happens stop using the device and apply to qualified or authorized personnel 2 Do not insert things into the device through the openings to avoid risk of fire o
9. P4 JP5 OPEN STAND BY OFF JP3 OPEN NORMAL OPERATION JP4 CLOSED STANDBY AFTER 30 _ JP3CLOSED POWER CYCLE RESET MOM 5 CLOSED STAND BY AFTER 120 MN 2 OPEN NORMAL 0 10 2 CLOSED INVERTED 10 0V FAULT RELAY JP1 OPEN NORMALLY OPEN JP1 CLOSED NORMALLY CLOSED JUMPER JUMPER JP 1 JP2 JP3 JP4 5 JP6 JP1 JP2 JP3 JP4 JP5 JP6 Page 18 DA 250 User manual v 1 0 4 2 RS485 Serial communication DA 250 P could be connected via serial port to an RS485 communication bus to be controlled by a master system or a computer Because of disturbs on the serial line coming from outside dysfunctions can occur to the master system with possible harms to the amplifier to avoid such troubles use the following precautions e Do not put serial cables in the same pipe with power cables or hi voltage cables Keep a safe distance from those cables at least 10 cm e Connect the cable screen to the ground at one end not both ends ground connection should not be made in the same point where hi voltage circuits are connected to the ground e Switch off the whole system before start wiring the serial lines also missing or parasite currents could damage the modules DA 250 P support multipoint serial communication with the RS 485 electric standard that allows to connect up to 32 amplifiers each one with its own address The address is a number that enables the master system to establish the communicatio
10. d ventilation to the rack too It s advisable that the ventilation take place with the air aspiration from the bottom and the air emission from the top of the rack 5 Device ON LED powered device 6 CH1 CH2 input sensibility adjustment potentiometers 7 Two colour LED with indication purpose LED Description Indicating off input signal not present or too low green input signal present SIGNAL red input signal too high PEAK 8 Two colour LED with indication purpose LED Description Indicating off Smooth operation Green blink Output channels Muting MUTE red output channel fault FAULT 9 LED with indication purpose LED Description Indicating off Audio inputs CH1 CH2 enable green Audio inputs AUX CH1 AUX CH2 enable AUX SEL Page 6 DA 250 User manual 1 0 2 2 Description links 1 External volume adjustment potentiometers connector VCA 2 Connector input selector e MUTING enabling 3 Fault output TTL connector 4 RS485 serial connector 5 CH1 CH2 power output speakers connector 6 DIP SWITCH operation amplifier setting 7 IN CH1 CH2 balanced input connectors 8 AUX CH1 CH2 balanced input connectors 9 Fault output relay connector SPEAKER OUTPUT ee sm ooo Jf Page 7 DA 250 User ma
11. ection appears with the lighting of the green LED AUX SEL upon the amplifier CH1 CH2 Page 15 DA 250 User manual 1 0 3 5 MUTE Control The DA250 P has one logical input to disable the final stages of the power amplifier MUTE to enable the Muting act as previously shown NORMAL OPERATING Normal operating active amplifier The amplifier provides for optical insulated inputs to enable one input you must connect the 10V voltage to the COM pin common inputs To enable the input MUTE it is necessary to link it to the ground GND The muting activation appears with the lighting of the green LED MUTE upon the amplifier Page 16 DA 250 User manual 1 0 4 Amplifier confiqurations 4 1 Fault signal FAULT OUT RELE DA 250 P The DA250 P is provided with connector outputs for faults signalling of the amplified channels both with relay contact and double TTL output If the amplifier is part of a safety or alarm system the DA 250 P allows setting the relay contacts with reverse logic where contact is normally closed during regular operations and will be open in case of fault To enable this operating mode remove the TOP cover and set the jumpers as hereinafter A IMPORTANT This function could be enabled only for the fault signal relay not for TTL outputs Page 17 DA 250 User manual 1 0 FAULT SIGNAL RELAY OUTPUT INTERNAL SETTING ISTAND BY AMPLIFIER Yr u J
12. government or by local authorities e Correct disposal of obsolete devices of the accessories and especially of the batteries contribute to prevent possible negative consequences on human health and on the environment e For detailed information on obsolete devices disposal contact the municipality the garbage disposal service or the store where you bought the device Page 4 DA 250 User manual 1 0 2 Overview 2 1 General overview T 2 25 110 230Vac GEE FUSE 50 60Hz 100W i imout DA 250 P 2 Channel Power Amplifier QO cu power on CHI cH2 6 u our 2546 C I MEL Y 100Hz Q H 225 5238 SPEAKER OUTPUT 555655 INCH2 AUNCHIAUXCH2 RELAY cnt 6 5 DA 250 User manual 1 0 1 Power section cooling grille 2 Protection fuse on mains power 3 110 230VAC mains power connector use the appropriate supplied cable 4 Power amps cooling grille A IMPORTANT The power amplifier during regular operation needs a suitable cooling that can be done by natural or forced ventilation case of more amplifiers mounted a single rack air exchange could be poor it s advisable in this case to provide force
13. n with a specific DA 480 among the several ones connected to the same communication bus A IMPORTANT during address setting pay attention to not define more than one module with the same number otherwise communication becomes confuse and irregular and exchanged data will doesn t make sense ADDRESS SETTING ON RS485 BUS 16 32 64 128 lt DS1ON ID 1 s DS3 ON ID 4 ena 084 ID 8 DS5 ON ID 16 DS6 ID 32 DS7 ON ID 64 DS8 ON ID 128 5 485 _ m m DS1 DS2 DS3 DS4 DS5 DS6 DS7 DS8 ADDRESS Page 19 DA 250 User manual 1 0 RS485 BUS CONNECTION A T B BUS RS485 A T B TERMINATION RESISTANCE ON SERIAL LINE When connected to an RS485 bus should be provided termination resistance at both ends of the line to avoid stationary waves creation 9 ant to define line impedance also with no transmission DA 250 P has the termination resistance inside but it is disconnected To plug it in just short circuit A and T clamps as shown in the picture BUS RS485 Page 20 DA 250 User manual 1 0 4 3 Hi pass filter The amplifier has one independent hi pass filter per channel placed between the input signal and the power amplification stages which allows to directly drive the limited band speakers IMPORTANT To enable the filter use both the Switches for each channel HI PASS FILTER SETTING
14. nual 1 0 2 3 Power amp configurations general overview JP4IJP5 OPEN STAND BY OFF JP3 OPEN NORMAL OPERATION JP4 CLOSED STAND BY AFTER 30 gt 3CLOSED POWER CYCLE RESET MOM JP5 CLOSED STAND BY AFTER 120 MN JP2 OPEN NORMAL 0 10V JP2 CLOSED INVERTED 10 0V 051 ON ID 1 OPEN NORMALLY OPEN 05208 10 2 ON JP1 CLOSED NORMALLY CLOSED 053 4 054 10 8 055 D 16 056 10 32 057 ON ID 64 058 ON ID 128 RS 485 JUMPER ADDRESS SETTING HIGH PASS Y Y BRIDGED MODE GND LIFT Page 8 DA 250 User manual 1 0 3 Connections 3 1 2 channels configuration 2 CHANNELS AMPLIFICATION OUTPUT CONNECTIONS CH1 CH2 Observe correct polarity speaker i connection to have output signals in phase i with the input ones A IMPORTANT Do not connect outputs among them or to others amplifiers outputs Do not short circuit the outputs e To connect the speakers use the appropriate cable section depending on the connection length Reduced section cables cause power loss along the line with consequently cable heating 2 CHANNELS AMPLIFICATION INPUT CONNECTIONS BALANCED INPUT Pin 1 ground Pin 2 reverse phase signal Pin 3 in phase signal IN IN AUX AUX CH1 CH2 CH1 CH2 UNBALANCED INPUT Pin 1 ground Pin 2 ground Pin 3 in phase signal A IMPORTANT 20
15. r electric shock 3 Before connect the amplifier ALWAIS verify the ground connection as requested by the law 4 Disconnect the device from the light socket before make any operation for the internal device configuration 5 This power amplifier has been designed and produced to operate with a 110 230VAC 50 60 2 universal mains power 6 If the original power cord is waste or deteriorate replace it with a similar one 7 For speakers connections the use of cables with appropriate section and that meet the safety laws is suggested 8 Switch on the amplifier only after all the other components of the sound system have been connected and switched on to avoid hums and annoying noise from the speakers Page 3 DA 250 User manual 1 0 9 Disconnect the device from the light socket before make cleaning operations Clean the device with dry and soft cloth Do not use liquids or spray that can contain flammable elements 10 Device handling must take place only when all the cables have been disconnected 11 Device maintenance must be done only by qualified personnel 12 For any requirement or technical information contact InOut or authorized personnel OBSOLETE DEVICES DISPOSAL e This picture means that the device is European Directive 2002 96 EC All electronic and electric devices should be disposed separately from the normal garbage by specific gathering plants designated by the
16. tivated and the involved channels will be deactivated switching them back on when an acceptable running temperature is reached This condition is indicated with a FAULT LED 5 3 Over current and short circuit protection The device has inside an high currents or output short circuit present protection circuit in those cases the involved channels will be switched off with FAULT LED indication Page 25 DA 250 User manual 1 0 6 Specifications 6 1 Technical features AC Mains 110 230Vac 10 50 60 2 Auto ranging Consumption during standby 1 W Mains protection 2 retard fuse Output power per 50W 40 1 kHz THD N 0 1 Output power in BRIDGED mode 100W 8 Q 1 kHz THD N 0 1 Frequency response 20 2 To 20kHz OdB 3dB Signal to noise A Weighted 100 Harmonic distortion lt 0 05 Productivity 90 40 Input 20kohms Sensitive input range 22dBu 5dBu Protections Overload Short circuit to ground Under voltage and over voltage DC Subsonic signals a eth tes conventional 30 the strength of liquid and po
17. uring manufacture or in their material including labour costs The warranty does not apply to damage caused by negligence or failure to comply with the instructions or damage caused by unauthorised people with a special reference to the external parts Also the warranty does not apply to damage caused to the device by connection to unsuitable power sources The warranty does not cover parts that are subject to wear as a consequence of the use as well as the chassis if the material is not defective The warranty does not include transport costs which will be paid by the purchaser depending on way and time of transport The warranty expires 24 months after the purchase In this case service will be provided charging for the replaced parts labour costs and transport according to the current rates 10 case of any controversy the Court of Law of Venice has the exclusive jurisdiction Page 1 DA 250 User manual 1 0 SUMMARY 1 Installation 1 1 Introduction 1 2 Contents of the DA 250 P 1 3 Safety rules Overview 2 1 General overview 2 2 Description links 2 3 Amplifier configurations general overview Connections 3 1 2 ch amplification 3 2 1 ch amplification BRIDGED MODE 2 2 Remote volume control VCA 3 4 Inputs selection AUX 3 5 MUTE control Amplifier configurations 4 1 Failure signal FAULT 4 2 RS485 serial communication 4 3 Hi pass filter 4 4 Ground lift 4 5 Activate Stand By 4 6
18. wders permeation 141x109x41 5mm Weight 640g CEE directive compliant 73 23 following modification 93 68 art 13 Electromagnetic compatibility 89 336 and following modification 93 68 Art 5 Applied standards Safety EN 60065 Safety limitation for electronic devices and their accessories connected to the house power grid and analogous general use Electromagnetic compatibility for Emissions Harmonics EN 61000 3 2 audio devices Voltage fluctuations EN 61000 3 3 Radio interferences EN 55013 Immunity EN 55020 C Manufactured by 1 1 out Noventa di Piave VE ITALY Page 26 DA 250 User manual 1 0 6 2 Mechanical dimensions 141mm 110 230VAC 50 60Hz 100W DA 250 2 Channel Power Amplifier c D 2 SIGNAL AUX C POWERON cut C MUTE TEJ 1 2 IN OUT RS ass AT SPEAKER OUTPUT CH1 CH2 Cos ol Linia 27 109 41 5 DA 250 User manual 1 0 6 3 Block diagram LN3S3ud 1VN IS m JOVLS WLIDIG LNaS3ud 1VN IS 193130 aaow 5 123135 ZHOE 2 00 209
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