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Only use system indoor, avoid contact with water or other liquids. 

 

Avoid flames and do not put close to flammable liquids or gases. 

 

Always disconnect power from the mains, when system is not used. Only handle the power-cord 
by the plug. Never pull out the plug by tugging the power-cord. 

 

Make sure you don’t use the wrong kind of cables or defective cables. 

 

Make sure that the signals into the mixer are balanced, otherwise hum could be created. 

 

Make sure you use DI boxes to balance unbalanced signals; All incoming signals should be clear. 

 

Make sure that the available voltage is not higher than stated on the rear panel. 

 

Make sure that the power-cord is never crimped or damaged. Check the system and the power-
cord from time to time. 

 

Make sure that the amplifier is turned down, before turning the power on or off. So you can avoid 
supersonic frequencies, which could damage your speakers. 

 

Don't put your equipment next to TV, radio, etc., because of interference or distortion. 

 

If you connect other parts of the system, be careful of ground loops. 

 

Before changing the ground, always turn off your amplifier. 

 

Please read this manual carefully and keep it for future reference. Remember that the amplifier 
has a better value on the market, if you save the carton and all packing materials. 

 

Connecting amplifier outputs to oscilloscopes or other test equipment, while the amplifier is in 
bridged mode, may damage both the amplifier and test equipment. 

 

Do not drive the inputs with a signal level bigger, than required to drive the equipment to full 
output. 

 

Please turn off the power switch, when changing the power cord or signal cable, or select the 
input mode switch. 

 

In typical use, please set the volume at 0dB position. 

 

Sometimes, when you want to send one signal to more than one amplifier, you should use a signal 
distributor. 

 

If your Dap Audio device fails to work properly, discontinue use immediately. Pack the unit 
securely (preferably in the original packing material), and return it to your Dap Audio dealer for 
service. 

 

Allow time to cool down, before cleaning or servicing. 

 

For replacement use fuses of same type and rating only. 

 

Prevent distortion! Make sure that all components connected to the DSA have sufficient power 
ratings. Otherwise distortion will be generated because the components are operated at their 
limits. 

 

Avoid ground loops! Always be sure to connect the power amps and the mixing console to the 
same electrical circuit to ensure the same phase! 

 

If system is dropped or struck, disconnect mains power supply immediately. Have a qualified 
engineer inspect for safety before operating. 

 

If the system has been exposed to drastic temperature fluctuation (e.g. after transportation), do 
not switch it on immediately. The arising condensation water might damage your system. Leave 
the system switched off until it has reached room temperature. 

 

This device falls under protection class I. Therefore it is essential to connect the yellow/green 
conductor to earth. 

 

Repairs, servicing and electric connection must be carried out by a qualified technician. 

 
 

OPERATING DETERMINATIONS 

 
This system is not designed for permanent operation. Consistent operation breaks will ensure that the 
system will serve you for a long time without defects. 
 
If this system is operated in any other way, than the one described in this manual, the product may suffer 
damages and the

 

warranty becomes void.  

Any other operation may lead to dangers like short-circuit, burns, electric shock, etc. 
 
You endanger your own safety and the safety of others! 

 

Improper installation can cause serious damage to people and property !

 

 

Содержание DSA-250

Страница 1: ...DSA 250 ORDERCODE D4101 Highlite International B V Vestastraat 2 6468 EX Kerkrade The Netherlands ...

Страница 2: ...eed You can rely on DAP Audio for more excellent audio products We design and manufacture professional audio equipment for the entertainment industry New products are being launched regularly We work hard to keep you our customer satisfied You can get some of the best quality best priced products on the market from DAP Audio So next time turn to DAP Audio for more great audio equipment Always get ...

Страница 3: ...ions 2 Operating determinations 3 Return procedure 4 Claims 4 Description 5 Features 5 Overview Front panel 6 Overview Back panel 7 Operation 8 Mode selection 9 Connection cables 11 Maintenance 12 Replacing a fuse 12 Troubleshooting 12 Product Specifications 13 Block diagram 14 Wire gauge charts 15 ...

Страница 4: ...it is absolutely necessary for the user to follow the safety instructions and warning notes written in this manual Please consider that damages caused by manual modifications to the system are not subject to warranty This system contains no user serviceable parts Refer servicing to qualified technicians only IMPORTANT The manufacturer will not accept liability for any resulting damages caused by t...

Страница 5: ...e at 0dB position Sometimes when you want to send one signal to more than one amplifier you should use a signal distributor If your Dap Audio device fails to work properly discontinue use immediately Pack the unit securely preferably in the original packing material and return it to your Dap Audio dealer for service Allow time to cool down before cleaning or servicing For replacement use fuses of ...

Страница 6: ...hod to use Note If you are given an RMA number please include the following information on a piece of paper inside the box 1 Your name 2 Your address 3 Your phone number 4 A brief description of the symptoms Claims The client has the obligation to check the delivered goods immediately upon delivery for any short comings and or visible defects or perform this check after our announcement that the g...

Страница 7: ...ve clip limiting IMG impedance sensing Auto ramp protection Thermal protection Short circuit protection DC voltage protection Subsonic protection Switchable high low bypass filter 120Hz Crosstalk 20Hz 20KHz 8 Ohm 60dB Frequency response 20Hz 20KHz Sensitivity 8 Ohm stereo 1KHz 1V S N Ratio 95 dB Damping Factor 300 Slewrate 40V uSec Total Harmonic distortion THD 0 1 Mode Stereo Parallel Bridge Cool...

Страница 8: ... modes See the specifications at the end of this manual for standard voltage gain and input sensitivity information When operating the amplifier in bridged mode both attenuators must be in the same position so the speaker load will be equally shared between the channels 4 Protect LED Indicates that the channel is in Protect mode speakers disconnected by output relay 5 Clip LED Illuminates at the c...

Страница 9: ...s in level 12 Filter 120Hz select switch High pass Low pass By pass 13 Mode Selection DIP switch This DIP switch configures the amplifier for Stereo Parallel or Bridged Mono Mode operation Amplifiers are factory configured for Stereo Mode 14 Grounding selector To eliminate groundloops put the selector in OFF position 15 Lighting Switch To switch the lighting on the front panel ON or OFF 16 Output ...

Страница 10: ...speed DC fans are controlled by heat sink temperature sensing circuits When the amplifier Is turned on the fans briefly rev up then slow to an Idle this Indicates that the temperature sensing circuits are operating normally The fan speed Increases only as required by heat sink temperatures keeping fan noise to a minimum Under extreme thermal load the fans will force a very large volume of air thro...

Страница 11: ... doubling the power over that of either channel alone Signal is applied to the Channel A input only Both attenuators are used to control signal level in addition both must be adjusted to the same setting Only channel A 1 4 TRS or XLR input may be used NOTE The channel B Input connectors XLR and or TRS maybe used to loop thru the channel A signal When in parallel or bridged mono mode Use extreme ca...

Страница 12: ...10 ...

Страница 13: ...hem This gives the advantage of increasing their life and reliability Periodically check your cables A great number of problems faulty contacts ground hum discharges etc are caused entirely by using unsuitable or faulty cables Headphones Unbalanced mono Balanced mono Insert Compensation of interference with balanced connections ...

Страница 14: ...ewdriver to the left at the same time gently push a bit Turn and Push The fuse will come out 3 Remove the broken fuse If brown or unclear it is burned out 4 Insert the replacement fuse into the holder where the old fuse was Reinsert the fuse cover Be sure to use a fuse of the same type and specification See the product specification label for details Troubleshooting DAP Audio DSA series Amplifiers...

Страница 15: ...power 1V for rated power 1V for rated power Input Impedance 20KΩ balanced 10KΩ unbalanced 20KΩ balanced 10KΩ unbalanced 20KΩ balanced 10KΩ unbalanced 20KΩ balanced 10KΩ unbalanced Hum and Noise 95dB 95dB 95dB 95dB Crosstalk 60dB 60dB 60dB 60dB Class B B B B Input Connectors per channel Female XLR pin 2 TRS Combo tip Output connectors per channel Speakon connectors Power Supply 230 V 50 60 Hz Max C...

Страница 16: ...14 DSA Block Diagram ...

Страница 17: ... 16 2 3 4 5 1 5 0 58 1 16 2 3 2 5 0 35 0 7 1 39 4 0 22 0 44 0 87 5 0 5 4 3 8 2 15 5 0 75 2 9 5 6 10 8 1 5 1 45 2 9 5 6 2 5 0 87 1 74 3 4 4 0 55 1 09 2 2 6 0 37 0 73 1 45 10 0 5 8 24 15 5 28 0 75 5 6 10 8 19 9 1 5 2 9 5 6 10 8 2 5 1 74 2 9 6 7 4 1 09 1 74 4 3 6 0 73 1 09 2 9 30 0 75 15 5 0 73 45 1 5 8 2 15 5 28 2 5 5 1 9 8 18 2 4 3 2 6 3 12 6 2 2 4 3 8 2 10 1 31 2 6 5 1 ...

Страница 18: ...d 2 ohm load 5 18 0 81 1 61 3 2 16 0 51 1 02 2 14 0 32 0 64 1 28 12 0 2 0 4 0 8 10 0 128 0 25 0 51 10 18 1 61 3 2 6 2 16 1 02 2 4 14 0 64 1 28 2 5 12 0 4 0 8 1 6 10 0 25 0 51 1 01 40 18 6 2 11 9 22 16 4 7 7 14 6 14 2 5 5 9 6 12 1 6 3 2 6 2 10 1 01 2 4 8 0 6 1 2 2 4 80 18 11 9 22 37 16 7 7 14 6 26 14 5 9 6 17 8 12 3 2 6 2 11 8 10 2 4 7 7 ...

Страница 19: ...2011 Dap Audio ...

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