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SAFETY COMPONENT ( MUST BE REPLACED BY ORIGINAL PART )

NOTE:

The  lightning  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.

The exclamation point within an equilateral triangle is 

intended to alert the user to the presence of important 

operating and maintance (servicing) instructions in the 

literature accompanying the appliance.

1.  

Read these instructions.

2. 

Keep these instructions. 

3.  

Heed all warnings.

4. 

Follow all instructions.

5.  

Do not use this apparatus near water. 

6. 

Clean only with a dry cloth.

7.  

Do not block any ventilation openings. Install in accordance with the manufactures instructions.

8. 

Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus 

 

(including amplifiers) that produce heat.

9. 

Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades    

 

with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide    

 

blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an  

 

electrican for replacement of the obsolete outlet.

10. 

Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,  

 

 

and the point where they exit from the apparatus. 

11. 

Only use attachments/accessories specified by the manufacturer.

12. 

Unplug this apparatus during lightning storms or when unused for long periods of time.

13.  

Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged  

 

in any way, such as 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.

14.  

Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases,  

 

are placed on the equipment.

15. 

To completely disconnect this equipment from the AC Mains, disconnect the power supply cord plug from the AC  

 

receptacle.

16.  

The mains plug of the power supply cord shall remain readily operable.

CAUTION:

  

These servicing instructions are for use by qualified personnel only. To reduce the risk of    

 

 

electric shock, do not perform any servicing other than that ontained in the Operating 

 

 

Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

1. 

Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when 

 

servicing the appliance.

2. 

Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be  

 

operated and is connected to the mains.

3. 

Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.

4. 

The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure),  

 

respectively between the mains poles has to be 3 mm and needs to be maintained at all times. The minimum  

 

distance between parts carrying mains voltage and any switches or breakers that are not connected  to the mains  

 

(secondary parts) has to be 6 mm and needs to be maintained at all times.

5. 

Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only  

 

permissible when using original parts.

6. 

Altering the circuitry without prior consent or advice from the manufacturer is not legitimate.

7. 

Any work security regulations that are applicable at the location where the appliance is being serviced have to be  

 

strictly obeyed. This applies also to any regulations about the work place itself.

8. 

All instructions concerning the handling of MOS - circuits have to be observed. 

IMPORTANT SERVICE INSTRUCTIONS

IMPORTANT SAFETY INSTRUCTIONS

Management of WEEE (waste electrical and electronic equipment) (applicable in Member States of the 

European Union and other European countries with individual national policies on the management of WEEE) 

The symbol on the product or on its packaging indicates that this product may not be treated as regular 

household waste, but has to be disposed through returning it at a Telex dealer. 

Содержание Power Amplifier DPA 4245

Страница 1: ...or parallel linked operation input gain controls integrated audio limiters power on switching noise suppression protection circuitry DC HF Back EMF output voltage overload limiters initial inrush current limiter output peak current limiter 18 dB oct LO cut filter at 45 Hz SIGNAL and LIMIT indication for optical monitoring thermal overload protection for the heat sink and the internal power supply ...

Страница 2: ...s vases are placed on the equipment 15 To completely disconnect this equipment from the AC Mains disconnect the power supply cord plug from the AC receptacle 16 The mains plug of the power supply cord shall remain readily operable CAUTION These servicing instructions are for use by qualified personnel only To reduce the risk of electric shock do not perform any servicing other than that ontained i...

Страница 3: ...e power amplifiers momentary operational status is provided through easily readable LED indicators individually showing whether a channel is ready for operation a signal is present at the output if any of the limiter circuits and or one of the protection circuits has been activated The inputs are electronically balanced and carried out as XLRF type and as binding post clamping connectors as well P...

Страница 4: ...onment can result in the occurrence of condensation on inner parts Operating the appliance is only permissible after it has accommodated to the altered temperature approximately after one hour Should any foreign solid parts or liquids inadvertently in trude the enclosure immediately unplug the device from the power source and have it checked at a DYNACORD service center before further use Cleaning...

Страница 5: ...nnectors or using the parallel linked binding posts For the latter option you can utilize the supplied screw plugs Thus carrying the audio signals through to feed additional power amplifiers can be conve niently achieved without the need for special split cables The XLR type input connectors pin assignment is in accordance to the IEC 268 standard In case the controlling device does not supply bala...

Страница 6: ...led via the level controls A and B If the switch is set to its dual stereo position channels A and B are se parately amplified two channel or stereo mode Power Outputs A B The loudspeaker cables are connected to the power amplifier through high performance binding posts with the necessary screw plugs being supplied For connection purposes it is possible to remove the 12 pole terminal plug Cables w...

Страница 7: ... security class 3 standard Before the first operation of the power amplifier the loudspeaker terminal strip has to be covered using the supplied protection cover Power Outputs Isolated Outputs 70 V and 100 V To reduce line attenuation effects when the distance between power amplifier and loudspeaker systems exceeds 50 meters it is recommended to employ loudspeaker systems with 100 V or 70 V line t...

Страница 8: ...tput and at the isolated output But it is of major importance that the overall power consumption of the connected loudspeaker systems or lines does not exceed the output power capacity of the power amplifier Example If a loudspeaker system with 8 ohms and a nominal power handling ca pacity of 300 watts is connected to the DPA 4260 channel A Direct Output this equals exactly half of the power ampli...

Страница 9: ...datory using short cables with suitable diameter 1 5 mm2 2 5 mm2 Careful consideration of the loudspeaker systems correct connection is important in preventing phase correlation problems Channel A carries the signal in phase and therefore has to be connected to the pole of the correspondent loudspeaker system while the loudspeakers pole has to be connected to the output connector of channel B The ...

Страница 10: ...ttacks your ears but also lead to damaging the connected loudspeaker systems by overload The limiters are activated only in case of the occurrence of non linear conditions within the power amplifier e g signal clipping at the operation voltage limit The limit ers do not affect the power amplifier s overall dynamic range Signal Indicator This indicator is lit when the audio signal exceeds 30 dB In ...

Страница 11: ...where the saturation starts The Limit LEDs on the front panel indicate that the limiters have been activated Despite the protection that is provided through the audio signal limiters the Limit LEDs should not light over a longer period of time Please locate the cause of the faulty operation e g lower the LF EQ setting at the connec ted mixing console when at the same time the input level at the po...

Страница 12: ...7 45 1714 1420 700 720 2456 DPA 4260 idling 230V 0 57 131 80 80 273 normal operation 10 dB 230V 3 66 842 655 101 554 1890 alarm 3 dB 230V 7 34 1688 1370 506 864 2948 nominal conditions 230V 9 86 2268 1900 1000 900 3070 initial current inrush for both models 38 A Pmains VA apparent power Umains Imains Pmains W active power Pout W output power Pv W leakage power 1BTU 1055 06 W s Fuses location pos u...

Страница 13: ...V 25V THD 0 2 45Hz 20kHz Maximum RMS Voltage Swing 44V 125 V 87V 31V 52V 121V 88V 32V THD 1 1kHz no load connected Frequency Response 3dB ref 1kHz 45 Hz 30kHz 45 Hz 22kHz 45 Hz 30kHz 45 Hz 22kHz LO Cut Filter 18dB octave 45Hz HI Cut Filter 12dB octave 30kHz Voltage Gain 34 dB 34 dB 42 dB 39 dB 30 dB 35 dB 35 dB 42 dB 39 dB 30 dB at 1 kHz Input Sensitivity and Impedance 0dBu 775mV 20 kOhm at rated ...

Страница 14: ... 60Hz Power Consumption at 1 8 maximum output voltage rated load impedance 690 W 870 W Protections Audio limiters High temperature DC HF Back EMF Peak current limiters Inrush current limiters Turn on delay Output Transformer Saturation Protection Input Connectors Euro style 3pin detachable or XLR Output Connectors Euro style 12pin detachable covered Cooling Front to Rear 3 stage fans Regulations T...

Страница 15: ...43 ...

Страница 16: ...44 483 132 5 131 440 5 377 382 395 3 31 75 44 45 Abmessungen Dimensions ...

Страница 17: ...ng 45 D 94315 Straubing Germany Phone 49 9421 706 0 Fax 49 9421 706 265 Asia Pacific Rim Headquarter Asia Singapore Telex Communications SEA Pte Ltd 38C Jalan Pemimpin Singapore 577180 Tel 65 6319 0621 Fax 65 6319 0620 Japan EVI Audio Japan Ltd 5 3 8 Funabashi Setagaya Ku Tokyo Japan 156 0055 Phone 81 3 5316 5020 Fax 81 3 5316 5031 Hong Kong Telex EVI Audio HK Ltd Unit 5 1 F Topsail Plaza 11 On Sh...

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