D series User Manual - DAS Audio
Contents
1. The D 700 is the very latest example of a dynamic amplifier This new breed of power amplifiers provide very high peak power levels in a much smaller and lighter package than previously possible with conventional amplifiers They are designed specifically for today s high power audio installations which use multiple speakers with electronic crossovers or speaker controllers These systems can handle very high transient signals that far exceed their RMS power rating The D 100 amplifiers have been designed to match this requirement and can deliver huge levels of power for short durations In order to protect themselves and the loudspeakers that they are driving continuous signals such as sine waves are automatically detected and reduced ramped down to a safe level When trying to measure the power output however continuous signals will give totally incorrect results A dynamic signal such as a tone burst should be used and the levels measured by monitoring the waveform on an oscilloscope The power envelope can then be accurately measured Our power output figures are measured using signals with known Crest Factors and are quoted at the rear of this manual and on our website Please refer to the technical area of our website for further information Notes and Switching On Read all documentation before operating your equipment and retain all documentation for future reference Do not spill water or other liquids int2. 4 ohms Secondary Yellow ve Grey ve 100V Blue centre tap for monitoring purposes only Note D 100 will give you 100V line out at the terminals D 20 will give you 70V line out at the terminals Manual del Usuario D series amplifiers User s Manual 15 5 a gt
3. applicable installation rules Only use attachments accessories specified by the manufacturer Use only with the cart tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from a tip over This symbol on the product indicates that this product should not be treated as household waste Instead it shall be handed over to the appicable collection point for the recycling of electrical and electronic equipment GARANTIA Todos nuestros productos est n garantizados por un periodo de 24 meses desde la fecha de compra Las garantias s lo seran validas si son por un defecto de fabricaci n y en ningun caso por un uso incorrecto del producto Las reparaciones en garantia pueden ser realizadas exclusivamente por el fabricante o el servicio de asistencia t cnica autorizado Otros cargos como portes y seguros son a cargo del comprador en todos los casos Para solicitar reparaci n en garant a es imprescindible que el producto no haya sido previamente manipulado e incluir una fotocopia de la factura de compra WARRANTY All D A S products are warrantied against any manufacturing defect for a period of 2 years from date of purchase The warranty excludes damage from incorrect use of the product All warranty repairs must be exclusively undertaken by the factory or any of its authorised service centers To cl
4. from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as if the power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped The mains circuit breaker shall remain readily accessible To completely disconnect this equipment from the AC mains disconnect the power cord from the mains circuit breaker This unit is fitted with a 3 wire power cord For safety reasons THE EARTH LEAD SHOULD NOT BE DISCONNECTED IN ANY CIRCUMSTANCE Where the amplifier is mounted in a rack and permanently connected to the mains then the rack should be installed with a readily accessible connector or an ALL POLE circuit breaker with 8mm breaking distances The mains switch on the amplifiers only switches one pole of the mains supply therefore for units with a detachable cord to be fully disconnected from the mains the mains disconnect device ie mains plug or mains coupler should remain readily operable For units with a fixed mains lead the external all pole circuit breaker with 3mm breaking distances is the disconnect device and therefore the installation of the amplifier shall be carried out in accordance with all the
5. is connected directly to the chassis mains earth If ground loops mains hum are encountered remove the screen connection from the other end of the cable and leave it open circuit If problems persist consult your dealer supplier DO NOT TAMPER WITH OR ALTER ANY GROUND EARTH CONNECTIONS INSIDE THE AMPLIFIER D 10 amp D 20 For bridged operation input should be made to channel A only and the rear panel switch set for bridged mode Channel B will then be fed out of phase with channel A D 100 For bridged operation input should be made to channel A or C only and the rear panel switch set for bridged mode for the appropriate pair of channels OUTPUTS The speaker outputs are via Neutrik Speakon connectors Only 2 of the 4 poles are used 2 pole NL2FC or 4 pole NL4FC connectors can be used Terminations are as follows HOT Pin 1 COLD Pin 1 Additionally Channel A Speakon connector carries Channel B output on Pins 2 amp 2 to allow easy bi amping or bridged operation HOT Pin 2 COLD Pin 2 NOTE 1 Although the cold output terminals are nominally at OV they should not be joined together otherwise cross talk may be introduced 2 Because the currents involved are very high the speaker cables should conform to the following minimum requirements otherwise the losses will cause the cables to get hot and audio power will be reduced D 10 12A D 20 16A D 100 20A all into 4ohm speaker loads NOTE Do not connect the inputs
6. outputs to any other voltage source such as a battery mains source or power supply regardless of whether the amplifier is turned on or off Do not run the output of any amplifier channel back into another channel s input and do not parallel or series connect an amplifier output with any other amplifier output LINK SOCKET only D 10 amp D 20 Each channel is provided with a 3 pin XLR connector marked LINK which allows the input signal to be linked to further amplifiers etc The connections are the same as for the input XLR BRIDGED MONO OPERATION Use centre Speakon connector marked BRIDGED and connect as follows HOT Pin 1 Channel A IN PHASE COLD Pin 1 Channel B OUT OF PHASE When operating in bridged mode the minimum impedances are doubled The minimum load in bridged mode is D 70 4 ohms D 20 4 ohms D 100 4 ohms Manual del Usuario D series amplifiers User s Manual Only D 100 Additionally Channel A Speakon connector carries Channel B output on Pins 2 amp 2 to allow easy bi amping or bridged operation using a single NL4 connector Similarly Channel C s Speakon connector also carries Channel D output Output ConnectorA Pin 2 Hot Ch B Pin 2 Cold Ch B Output Connector C Pin 2 Hot Ch D Pin 2 Cold Ch D For bi amped operation connect as above There must be no shared connections between channels Negative output terminals must not be joined together as they are not both at ground potential C
7. the output current of the amplifier channel this can occur even if the amplifier has not reached clipping point The OCM indicator can operate independently of the bar graph meter Typical conditions that may trigger the OCM circuitry would be very low load impedance or high subsonic or VHF levels 7 Limit LEDs The amplifiers incorporate signal limiters which are preset to prevent clipping with high levels of drive The amber LEDs on the front panel illuminate to indicate operation of the limiters 8 Link LED This indicates if the channel is linked to its immediate neighbour If this is illuminated the attenuation control of the channel to the immediate right will not function as both channels are being fed from the left hand channel The link switches are on the rear panel 9 PRC LED This illuminates if the Power Reduction Control has been enabled on the respective channel PRC switches are on the rear panel Manual del Usuario D series amplifiers User s Manual REAR PANEL Outputs Output A Output B 6 amp i gi 2 maf a te 000 OOO cH D cH c our our 466667 4 1 Input XLR sockets Connect signal inputs to these sockets wired pin 2 hot 3 cold 1 ground For sensitivity and impedance of these inputs please see the specifications on page 11 When running in bridged mono m
8. G LIQUID ON TOP OF THE APPARATUS TO AVOID ELECTRICAL SHOCK DO NOT REMOVE COVERS REFER ALL SERVICING TO QUALIFIED PERSONNEL DO NOT USE THE UNIT OF THE ELECTRICAL POWER CORD IS FRAYED OR BROKEN The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords and plugs and the point where they exit from the appliance ALWAYS OPERATE THE UNIT WITH THE AC GROUND WIRE CONNECTED TO THE ELECTRICAL SYSTEM GROUND Precautions should be taken so that the means of grounding of a piece of equipment is not defeated DO NOT REMOVE THE LID Removing the lid will expose you to potentially dangerous voltages There are no user serviceable parts inside ESD strikes to the unit s front panel that are in excess of 4000 volts may cause disturbance to the status LEDs on the unit This will not affect audio performance and will be corrected on the next power up cycle INSTALLATION MECHANICAL To ensure that this equipment performs to specification it should be mounted in a suitable rack or enclosure as described below Like all high power amplifiers it should be kept away from other equipment which is sensitive to magnetic fields Also this amplifier may suffer a substantial reduction in performance if it is subjected to or mounted close to equipment which radiates high PF fields Warning To prevent injury this apparatus must be securely a
9. LECTRICAL The amplifier has been manufactured to comply with your local power supply requirements but before connecting the unit to the supply ensure that the voltage printed on the rear panel is correct and that a mains fuse of the correct type and rating has been fitted Make sure power outlets conform to the power requirements listed on the back of the unit Damage caused by connecting to improper AC voltage is not covered by the warranty SAFETY WARNING Apparatus with CLASS construction shall be connected to a MAINS socket outlet with a protective earthing connection Where a MAINS plug or appliance coupler is used as the disconnect device it should remain readily operable Where the amplifier is mounted in a rack and permanently connected to the mains then the rack should be installed with a readily accessible connector or an ALL POLE circuit breaker with 8mm breaking distances This unit is fitted with a 3 wire power connector For safety reasons THE EARTH LEAD SHOULD NOT BE DISCONNECTED IN ANY CIRCUMSTANCE If ground loops are encountered consult the section on input connections later in this manual WHERE A FIXED MAINS LEAD IS FITTED THE WIRING COLOURS ARE 230V AREAS EARTH GREEN AND YELLOW NEUTRAL BLUE LIVE BROWN 120V AREAS EARTH GREEN NEUTRAL WHITE LIVE BLACK TO PREVENT THE LIKELIHOOD OF SHOCK OR FIRE HAZARD DO NOT EXPOSE THE UNIT TO RAIN OR MOISTURE DO NOT PLACE OBJECTS CONTAININ
10. QUIRED IN THE EVENT OF A FAILURE REFER TO A QUALIFIED SERVICE ENGINEER Parts are available from D A S Audio S A TECHNICAL SPECIFICATION Rated power handling input impedance 40 Output impedance rated Freguency response Distortion THD Weight each Dimensions mm 2U 100V Standard 70V Special 50V Only 50Hz 16kHz 50Hz 16kHz Chassis only 500W transformer TLINE SOOW 20 00 9 80 5 00 1dB lt 0 03 12kgs 2 8kgs 88 x 482 x 428 When mounting the amplifier in a rack or enclosure ensure that The rear of the unit is adequately supported The brackets which are supplied fit standard 19 inch 483mm rack mounting systems THE FRONT PANEL IS NOT CAPABLE OF SUPPORTING THE UNIT ON ITS OWN The general D 10 safety warnings precautions and service advice also apply to the T LINE Manual del Usuario D series amplifiers User s Manual APPENDIX Ill INSTRUCTIONS FOR USING 0 70 AMPLIFIERS WITH 100V 70V LINE TRANSFORMERS Frequency response It is necessary to provide some low frequency roll off to prevent the possibility of the line transformer saturating On the D 10 the roll off is included on the main board as standard To bring the 63 Hz roll off into circuit remove the 4 jumper links at hpf The response must be at least 3dB at 70 Hz and roll off at minimum 12dB per octave LINE TRANSFORMER LEAD OUT 500W single 100V winding Primary Orange ve Black ve
11. User Manual CONTENTS SAFETY PRECAUTIONS anne 3 WARRANTY nn UU rn e A 4 DECLARATION OF CONFORMITY coco ccoo cnn 5 INTRODUCTION to 7 FRONT PANEL inci DARRO A REAR PANEL ent ee ae 9to 11 SPECIFICATIONS nas 12 APPENDIX I Power Consumption and Thermal Emissions D 100 eee 13 APPENDIX Il T LINE Operating Instructions 000 14 APPENDIX Ill Instructions for using D 70 with 100V 70V line transformers 15 Manual del Usuario D series amplifiers User s Manual D series Amplificadores profesionales Professional power amplifiers Conserve y lea estas instrucciones Respete y siga todas las advertencias El signo de exclamaci n en un tri ngulo equil tero pretende alertar al usuario de instrucciones operativas y de mantenimiento reparaci n en la literatura que acompa a al aparato ADVERTENCIA Los aparatos de CLASE se deben conectar a una toma de corriente el ctrica con conexi n a tierra rayo con punta de flecha dentro de un tri ngulo equil tero retende alertar al usuario de la presencia de voltajes peligrosos O aislados dentro de la envolvente del producto que puede ser e magnitud suficiente para constituir un riesgo de descarga ctrica para las personas DVERTENCIA Para evitar lesiones este aparato debe estar firmemente sujeto al bastidor de conformidad con las instrucciones de instalaci n El cableado exterior conectado a estos terminales requiere de su instalaci n por una persona instruida y el uso d
12. aim a warranty repair do not open or intend to repair the product Return the damaged unit at shippers risk and freight prepaid to the nearest service center with a copy of the purchase invoice Manual del Usuario D series amplifiers User s Manual DECLARACION DE CONFORMIDAD DECLARATION OF CONFORMITY D A S Audio S A C Islas Baleares 24 46988 Pol Fuente del Jarro Valencia Espana Spain Declara que los amplificadores de la serieD Declares that Dseries amplifiers Cumple con los objetivos esenciales de las Directivas Abide by essential objectives relating Directives o Directiva de Baja Tensi n Low Voltage Directive 2006 95 CE e Directiva de Compatibilidad Electromagn tica EMC 2004 108 CE o Directiva ROHS 2002 95 CE 2 Directiva RAEE WEEE 2002 96 CE Y es conforme a las siguientes Normas Armonizadas Europeas In accordance with Harmonized European Norms o EN 60065 2002 Audio video and similar electronic apparatus Safety reguiremenis EN 55103 1 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 1 Emission e EN 55103 2 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 2 Immunity Manual del Usuario D series amplifiers User s Manual INTRODUCTION INSTALLATION E
13. apertures on the front of your amplifier should be cleaned or replaced periodically e g 12 24 months Filters in amplifiers located in more dirty atmospheres may require more frequent maintenance The filter should be dry cleaned using a vacuum cleaner preferably Running the unit without a filter is not recommended unless it is within a clean room Replacement filter material is available If the fan vents on the rear of the amplifier develop a build up of dust debris on the finger guards they can be cleaned with a dry paintbrush and a vacuum cleaner The casework of the amplifier may be cleaned with a lightly dampened cloth do not use any solvents as they will damage the paint finish and could remove printing If you have any doubts about carrying out maintenance please refer to a service engineer or contact your local dealer Manual del Usuario D series amplifiers User s Manual FRONT PANEL 1 Power Switch This single pole switch turns the amplifier fully off but does NOT isolate it from the mains supply 2 Power LED This indicates when the amplifier is active This does NOT indicate the presence of a mains supply when the power switch is OFF 3 Attenuation Controls These are analogue controls allowing precise level settings Note that in bridged mono mode some controls may be inactive 4 MP Auto Protect LED If a condition exists either internally or externally that could cause damage to
14. e cables flexibles preparados o exponga este equipo a la lluvia o humedad No use este aparato cerca del agua piscinas y fuentes por ejemplo No exponga el equipo a salpicaduras ni coloque sobre l objetos que contengan l quidos tales como vasos y botellas Equipo IP 20 Limpie con un pa o seco No use limpiadores con disolventes No instale el aparato cerca de fuentes de calor tales como radiadores calefactores estufas u otros aparatos que produzcan calor No bloquee las aberturas de ventilaci n e instalar de acuerdo con las instrucciones del fabricante Los ventiladores de refrigeraci n succionan aire fresco del frontal y sale caliente por a parte trasera de la unidad a trav s de las rejillas de ventilaci n La parte delantera y trasera del amplificador debe tener una exposici n al aire libre por ejemplo en un rack las puertas delanteras y traseras abiertas con c mara de aire de 2 cm a los lados y la parte superior SI AL AIRE NO SE LE PERMITE ESCAPAR POR ATR S SE SOBRECALENTAR LA UNIDAD Tenga cuidado al montar otro equipo en el mismo rack Dise ado para funcionar entre 15 C y 35 C con el 75 de humedad relativa m xima Desconecte este aparato durante tormentas el ctricas erremotos o cuando no se vaya a emplear durante largos periodos Tenga en cuenta que la tensi n nominal de alimentaci n es el valor indicado en la etiqueta con un rango 10 de ese valor seg n IEC 60065 2001 Proteja el cab
15. either the amplifier or the speakers the protection circuit will disengage the outputs and the A P LED will illuminate The amplifier will continue to be monitored and depending on the type of fault will either reset after the fault has cleared or require manual resetting by switching off at the mains switch and then on again after a few seconds If the outputs are shorted or if DC is present the protection circuit will disengage the outputs and the A P LED will illuminate Temperature related faults will reset if the unit has cooled sufficiently Output short circuits will require manual reset after clearing the fault 5 Bridge LED This illuminates when a channel pair have been switched into bridged mono mode channel A B or C D Note that the partner channel s LEDs and controls are disabled when a pair of channels are bridged Bridge switches are on the rear panel 6 The D 70 and D 20 have Signal LEDs that are active from a minimum output level of approximately 10 Watts and are an indication only of signal presence The D 700 has Signal Meter and OCM indicators LED bar graphs show instantaneous level on each channel to indicate proximity to the limiter threshold Note that if the PRC system is in operation on any channel this will affect the readout shown on the respective meter The red LED in the meter will illuminate when the limiter threshold has been reached and limiting is occurring The output current monitor OCM may activate to limit
16. he connected outer wiring to these terminals requires of its installation by an instructed person and the use of a flexible the cable already prepared Do not expose this device to rain or moisture Do not use this apparatus near water for example swimming pools and fountains Do not place any objects containing liquids such as bottles or glasses on the top of the unit Do not splash liquids on the unit IP 20 equipment Clean only with a dry cloth Do not use any solvent based cleaners Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat Do not block any ventilation openings install in accordance with he manufacturer s instructions The cooling fans suck cool air in through the front and blow hot air out at the rear of the unit through the ventilating grills The ront and rear of the amplifier should have free exposure to the air i e in a rack leave the front and rear doors off with 2cm air gap at the sides and top IF AIR IS NOT ALLOWED TO ESCAPE FROM THE REAR OVER HEATING WILL OCCUR Take care when mounting other equipment in the same rack Working temperature ranges from 15 C to 35 C with a relative humidity of 75 Unplug this apparatus during ligtning storms earthquakes or when unused for long periods of time Take into account that the nominal AC voltage is the value shown in the equipment 10 according to IEC 60065 2001 Protect the power cord
17. le de alimentaci n de ser pisado o aplastado especialmente en los enchufes recept culos y en el punto en el que salen del aparato Conf e las reparaciones a personal cualificado Se requiere servicio cuando el aparato ha sido da ado de alguna manera como por ejemplo si el cable de alimentaci n o el enchufe est da ado se ha derramado l quido o han ca do objetos dentro del aparato el aparato ha sido expuesto a la lluvia o la humedad no funciona con normalidad o se ha ca do El interruptor de alimentaci n deber permanecer f cilmente accesible Para desconectar completamente este aparato de la red el ctrica desconecte el cable de alimentaci n del interruptor de corriente principal Esta unidad est equipada con un cable de alimentaci n de 3 hilos Por razones de seguridad LA CONEXI N A TERRA NO DEBE DESCONECTARSE EN NINGUNA CIRCUNSTANCIA Cuando la unidad est montada en un rack y permanentemente conectada a red debe ser instalada con un conector de f cil acceso o con un dispositivo de desconexi n omnipolar con al menos 3 mm de distancia entre sus contactos El interruptor de los amplificadores s lo afecta a uno de los polos de la red el ctrica por tanto en las unidades con un cable desmontable el dispositivo de desconexi n de red por ejemplo el enchufe o la conexi n a red debe ser f cilmente accesible para poder estar completamente desconectado de la red Sin embargo en unidades con cable fijo deber usar u
18. lel input connections to other amplifiers As such they will function even if the amplifier is turned off 7 Mains Fuse only D 10 Manual del Usuario D series amplifiers User s Manual 10 ERA s so 8 PRC switches Each channel of the amplifier may be Bomar power limited independently using these pairs of switches Control in three stages offering 2 4 and 6dB of Power Reduction DdB E Control The settings for these switches are on the rear 2dB E a panel for quick reference 4dB i 6dB 9 Link switch Press this switch to link the input of the channel to its immediate left Multiple channels may be linked using these switches so for example to link all outputs to input A press all three switches IN and use input A only The front panel attenuators will still operate independently when channels are linked CONNECTIONS INPUTS The inputs are made via 3 pin XLR connectors which are electronically balanced and should be connected via a high grade twin core screened cable as follows PIN2 Hot signal Signal Hot PIN3 Cold signal Signal Cold PIN1 Screen see note Connected to the chassis of the unbalanced equipment or left disconnected at the unbalanced end The amplifier is designed to operate with fully balanced equipment and ground loops or loss of performance may be experienced if connected to unbalanced sources NOTE This amplifier is wired to the latest industry recommendations PIN1
19. n dispositivo de desconexi n externo antes descrito La instalaci n deber seguir todas las normas de instalaci n vigentes Utilice s lo accesorios por ejemplo soportes o racks recomendados por el fabricante Cuando se utiliza un rack o un carro de transporte tenga cuidado al mover la combinaci n carro aparato para evitar lesiones causadas por un vuelco Este s mbolo indica que el presente producto no puede ser tratado como residuo dom stico normal sino que debe entregarse en el correspondiente punto de recogida de equipos el ctricos y electr nicos Z Manual del Usuario D series amplifiers User s Manual 3 Keep these instructions Read these instructions Heed all warnings Follow all instructions The exclamation point within an equilateral triangle is intended to alert the user of important operating and maintenance servicing instructions in the literature accompanying the appliance WARNING Apparatus with CLASS construction shall be connected to a MAINS socket outlet with a protective earthing connection The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence if uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons WARNING To prevent injury this apparatus must be securely attached to the rack in accordance with the installation instructions T
20. o or on the unit and do not operate the unit while standing in liquid Do not block fan intake or rear ventilation outlets or operate the unit in an environment that could impede the free flow of air around the unit If the unit is used in an extremely dusty or smoky environment it should be cleaned of any collected debris at regular intervals It is important that the power output of your amplifier is matched to the power handling capacity of your loudspeaker If not damage to the loudspeaker could occur Switching On At switch on the protection circuit will initially activate whilst the circuits stabilise indicated by the red A P LED illuminating in addition to various other LEDs After a few seconds the red A P LED will extinguish indicating a satisfactory working condition Other LEDs may remain illuminated depending upon rear panel switch settings and input connections If the A P LED does not extinguish after 5 seconds the unit may be faulty or some external connections may be incorrect or inappropriate If this occurs you should power down the unit and remove all external connections except for the mains power supply and repeat the power up sequence If the problem persists please contact us Maintenance These maintenance instructions are for use by qualified personnel only Before any routine maintenance please ensure that your amplifier is disconnected from the mains supply The filter behind the air intake
21. ode only input A is used except D 100 2 D 10 8 D 20 Channel A output Speakon socket Normal output is on pins 1 hot 1 cold Channel B s output is also wired to this socket to enable a single NL4 to provide both channels and to facilitate easier wiring in bridged mode Channel B is wired pins 2 hot 2 cold Channel B output Speakon socket Normal output is on pins 1 hot 1 cold D 100 Channel A output Speakon socket Normal output is on pins 1 hot 1 cold Channel B s output is also wired to this socket to enable a single NLA to provide both channels and to facilitate easier wiring in bridged mode Channel B is wired pins 2 hot 2 cold Similarly channel C s output Speakon socket carries Channel D s output Check the table on the rear panel for details 3 D 10 amp D 20 Bridged Mono switch Depress this switch to run the amplifier in bridged mode Note that the output must be taken from channel A s output Speakon connector on pins 2 hot 1 cold D 100 Bridged mono switch A B Press this switch to run this pair of amplifier channels in bridged mode To run C D bridged press the switch on the far left of the panel beside channel D s input XLR 4 Mains inlet only D 70 amp Power Cord 5 Fan outlet The variable speed fans suck air in through the front vents and out through the back of the amplifier 6 Link out XLR sockets These are passively connected directly to their respective inputs to allow for paral
22. onnecting them together will damage the amplifier and void the warranty As the currents involved are very high and to ensure best performance the speaker cables should be kept as short as possible and conform to the following minimum requirements D 700 20A into 4 Ohm speaker loads When operating the amplifier into loads of less than 4 Ohms be aware that the current capacity of the speaker cables will need to be increased above the values quoted here Do not connect the inputs outputs to any other voltage source such as a battery mains source or power supply regardless of whether the amplifier is turned on or off Do not run the output of any amplifier channel back into another channel s input and do not parallel or series connect an amplifier output with any other amplifier output Pairs of channels may be independently bridged channel pair A amp B and or channel pair C amp D The method is the same for both channel pairs Supply signal to Channel A or C input only and push in the appropriate rear panel switch marked BRG A amp B or BRG C amp D Use Channel A or C s Output Speakon connector and connect as follows Pin 2 Hot Pin 1 Cold When operating in bridged mode the minimum impedances are doubled The minimum load in bridged mode is 4 ohms Changing the Gain of Your Amplifier Internal Adjustments These instructions are for use by qualified personnel only Before any routine maintenance please ensure that yo
23. rio D series amplifiers User s Manual APPENDIX I Power Consumption and Thermal Emissions D 700 Mains Load Current Draw Thermal Emissions v R A W 240 504 528 240 240 120 4 2 6 0 9 0 504 528 120 504 551 120 504 564 566 628 668 No Sig l Quiescent Light Crest Factor of 7 8 18dB Average Crest Factor of 4 8 14dB Heavy Crest Factor of 2 8 9dB For details of measurement methods please refer to the Technical Support area of our website PRC Settings and Maximum Output D 700 Power Reduction Control Setting Per Channel Bridged Pair Maximum Power into 8 ohms W 1400 2dB PRC 980 4dB PRC 560 6dB PRC Maximum Power into 4 ohms W 2dB PRC 1950 4dB PRC 2940 6dB PRC 1640 Maximum Power into 2 ohms W 2dB PRC 2580 4dB PRC 1470 6dB PRC N A N A N A Manual del Usuario D series amplifiers User s Manual 13 14 APPENDIX II The T Line chassis can be configured with up to 4 transformers of 500W at 100V output 4 ohms input Other specifications 70V 50V are available to special order The power rating of each channel is printed on the rear panel The connections are via 4 pole SPEAKON connectors NL4FC INPUTS 4 ohms are OUTPUTS 100V are 1 HOT 1 CO 2 HOT 2 CO LD LD THERE ARE NO USER SERVICEABLE PARTS INSIDE AND NO MAINTENANCE IS RE
24. ttached to the rack in accordance with the installation instructions When mounting the amplifier in a rack or enclosure Be aware that THE FRONT PANEL IS NOT CAPABLE OF SUPPORTING THE UNIT ON ITS OWN Make sure that the rear of the unit is adequately supported The brackets which are supplied fit standard 19 inch 483mm rack mounting systems ENSURE THERE IS ADEQUATE VENTILATION The cooling fans suck cool air in through the front and blow hot air out at the rear of the unit through the ventilating grills The front and rear of the amplifier should have free exposure to the air i e in a rack leave the front amp rear doors off with 2cm air gap at the sides IF AIR IS NOT ALLOWED TO ESCAPE FROM THE REAR OVER HEATING WILL OCCUR Take care when mounting other equipment in the same rack Make sure that the rack unit has a separate earth connection technical earth The high frequency resonant converters in the D 100 amplifiers have been designed to have very low radio frequency RF emissions however even these low level emissions can cause interference with other equipment In order for this to be minimised the amplifier should be mounted in a metal rack enclosure which should have a separate technical Earth Alternatively a separate earth should be attached to the amplifier at the rear rack mounting bracket Manual del Usuario D series amplifiers User s Manual Dynamic Amplifier Performance Measurements
25. ur amplifier is disconnected from the mains supply Gain Sensitivity Settings D 700 Adjustment is by moving a link on the input PCB PCB741 one link for each channel Channel A s link is number 1 channel B s is number 2 and so on The gain may be set to 26 32 or 36dB factory setting 32dB Gain default 26dB Gain 36dB Gain Remember setting higher gain does not change the maximum available power but changes the level of signal input to achieve maximum power In any case provided that the input signal is less than 20dBu 7 7V the built in limiter circuit will prevent distortion within the amplifier The gain should be set to match the signal level from the source mixer equaliser etc Note The gain of D 70 is fixed to 32dB The gain of D 20 is 32dB factory setting or 36 dB by internal link Manual del Usuario D series amplifiers User s Manual 11 SPECIFICATIONS Parameter Units D 100 D 10 D20 Output Power per channel Watts Crest Factor of 4 8 Additional Specifications Sensitivity Options for maximum power Volts 20 gt 60 Hum amp Noise dB below max output 2400 tkHz po Optra DD as e Power Consumption Nominal 120v 4 ohmsXA 14 38 Dimensions mm H x W x D Dimensions in H x W x D Product improvement through research and development is an ongoing process at D A S All specifications are subject to change without notice 42 Manual del Usua
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