D4-500 digital power amplifier user manual
Contents
1. Signal out of phase D4 500 men t 25 Plug and connection assignment NL4 mounting connectors themann MUSIC IS OUR PASSION 26 Cleaning 9 Cleaning Fan grids The fan grids of the device must be cleaned on a regular basis to remove dust and dirt Before cleaning switch off the device and disconnect AC powered devices from the mains Use a lint free damp cloth for cleaning Never use solvents or alcohol for cleaning th mann MUSIC IS OUR PASSION 27 Protecting the environment 10 Protecting the environment Disposal of the packaging mate rial Disposal of your old device th mann MUSIC IS OUR PASSION For the transport and protective packaging environmentally friendly materials have been chosen that can be supplied to normal recycling Ensure that plastic bags packaging etc are properly disposed of Do not just dispose of these materials with your normal household waste but make sure that they are collected for recycling Please follow the notes and markings on the packaging This product is subject to the European Waste Electrical and Electronic Equipment Directive WEEE Do not dispose with your normal household waste Dispose of this device through an approved waste disposal firm or through your local waste facility When discarding the device comply with the rules and regulations that apply in your country If in doubt consult your local waste disposal facility2. 28 Notes th mann 29 Notes th mann 30 Musikhaus Thomann Hans Thomann Stra e 1 96138 Burgebrach Germany www thomann de
3. sine th mann MUSIC IS OUR PASSION 20 7 Technical specifications Rated output power 8 Q Rated output power 040 Max voltage swing RMS Slew rate 1 kHz THD DIM 30 Crosstalk Frequency response Input impedance Input sensitivity Damping factor 4 x 250 W THD 1 1 kHz 4 x 500 W THD 1 1 kHz 35 V THD 1 1 kHz 26 V us lt 0 1 typical lt 0 1 3 15 kHz 15 kHz gt 75 dB ref 1 kHz 10 rated power 20 Hz 20 kHz 2 dB 1 dB ref 1 kHz 20 kQ balanced 10 kQ unbalanced 1 Vims for rated power 1 kHz gt 500 100 Hz 1 kHz 4 Q D4 500 21 Signal to noise ratio Protective circuits Operating voltage supply Power consumption Dimensions Weight 22 107 dB A weighted VHF direct voltage temperature short circuit Undervoltage overcurrent lim iter AC 230 V 50 60 Hz see Chapter 6 Current consumption on page 20 1 RUina 19 rack installation depth 240 mm 4 6 kg digital power amplifier Plug and connection assignment 8 Plug and connection assignment Introduction This chapter will help you select the right cables and plugs to connect your valuable equip ment in such a way that a perfect sound experience is ensured Please note these advices because especially in Sound amp Light caution is indicated Even if a plug fits into the socket an incorrect connection may result in a destroyed power amp a short circu
4. such as pre amplifiers in the highest position NOTICE Possible staining The plasticiser contained in the rubber feet of this product may possibly react with the coating of your parquet linoleum laminate or PVC floor and after some time cause permanent dark stains In case of doubt do not put the rubber feet directly on the floor but use felt pad floor protectors or a carpet th mann MUSIC IS OUR PASSION 12 3 Features Features Output power 4x500W 40 4x250W 8Q 4 inputs 4 outputs Frequency response 20 Hz to 20 kHz 19 rackable 1 RU installation depth 240 mm th mann MUSIC IS OUR PASSION 13 Installation and operation 4 Installation and operation th mann MUSIC IS OUR PASSION NOTICE Possible staining The plasticiser contained in the rubber feet of this product may possibly react with the coating of your parquet linoleum laminate or PVC floor and after some time cause permanent dark stains In case of doubt do not put the rubber feet directly on the floor but use felt pad floor protectors or a carpet Unpack and carefully check that there is no transportation damage before using the unit Keep the equipment packaging To fully protect the device against vibration dust and moisture during transportation or storage use the original packaging or your own packaging material suitable for transport or storage respectively Create all connections while the device is off Use t
5. anger for children Ensure that plastic bags packaging etc are disposed of properly and are not within reach of babies and young children Choking hazard Safety Ensure that children do not detach any small parts e g knobs or the like from the unit They could swallow the pieces and choke Never let children unattended use electrical devices th mann MUSIC IS OUR PASSION Safety instructions DANGER Electric shock caused by high voltages inside Within the device there are areas where high voltages may be present Never remove any covers There are no user serviceable parts inside Do not use the device if covers protectors or optical components are missing or damaged DANGER Electric shock caused by short circuit Always use proper ready made insulated mains cabling power cord with a pro tective contact plug Do not modify the mains cable or the plug Failure to do so could result in electric shock death or fire If in doubt seek advice from a regis tered electrician th mann MUSIC IS OUR PASSION Safety instructions CAUTION Possible hearing damage The device can produce volume levels that may cause temporary or permanent hearing impairment Over an extended period of time even levels that seem to be uncritical can cause hearing damage Decrease the volume level immediately if you experience ringing in your ears or hearing impairment If this is not possible keep a greater distance or u
6. e using the device If you sell the unit please make sure that the buyer also receives this manual Our products are subject to a process of continuous development Thus they are subject to change th mann MUSIC IS OUR PASSION 1 1 Further information On our website www thomann de you will find lots of further information and details on the following points Download Keyword search Online guides Personal consultation Service This manual is also available as PDF file for you to download Use the search function in the electronic version to find the topics of interest for you quickly Our online guides provide detailed information on technical basics and terms For personal consultation please contact our technical hotline If you have any problems with the device the customer service will gladly assist you D4 500 General information 1 2 Notational conventions This manual uses the following notational conventions Letterings The letterings for connectors and controls are marked by square brackets and italics Examples VOLUME control Mono button Cross references References to other locations in this manual are identified by an arrow and the specified page number In the electronic version of the manual you can click the cross reference to jump to the specified location Example See Cross references on page 6 1 3 Symbols and signal words In this section you will find an ove
7. he shortest possible high quality cables for all connections Take care when running the cables to prevent tripping hazards 14 Connections and controls 5 Connections and controls Front panel th mann 15 ON OFF Main switch to turn the device on and off LED Power This LED indicates that the unit is operational and lights up constantly as soon as the device is switched on LED 10 dB and 20 dB These LEDs indicate the intensity of the input signal 10 dB or 20 dB If none of the LEDs lights up increase the signal level with the controls CH A to CH D and if required check the wiring If these LEDs are lit without an input signal is present there is an error In this case disconnect the speakers from the power amplifier and turn the controls for the input gain of channels CH A to CH D down to minimum If the LEDS still light up the device must be inspected by an authorized service centre LED Clip Overload indicator for channels CH A to CH D These LEDs light up when the distortion of the output signal increases 1 digital power amplifier 5 LED Fault Error indication for channels CH A to CH D These LEDs light up when one of the protective circuits triggers see amp Chapter 7 Technical specifications on page 21 When turning the device on the LEDs light up for three seconds During this time there is no signal present at the output yet Once the LEDs turn off the device is operat
8. ional 6 LED Thermal Over temperature indicator for the channels CH A to CH D These LEDs light up when the respective heat sink exceeds a certain temperature When turning the device on the LEDs light up for three seconds During this time there is no signal present at the output yet Once the LEDs turn off the device is operational 7 CH A D Controls for input gain of channels CH A to CH D D4 500 Connections and controls Rear panel th mann 18 IEC chassis connector INPUT CH A D Lockable combo XLR inch connectors for signal inputs OUTPUT CH A D Lockable NL4 mounting connectors for signal outputs Stereo Bridge selector switch Switch for operating modes Stereo channels operate independently of each other and Bridge two channels are interconnected to form one channel with double output Lift Ground selector switch The Ground Lift switch allows you to interrupt the connection between the device s protective earth terminal and signal ground in order to prevent hum loops Lift unpressed state disconnected Ground position switch pressed Earth pin and signal ground are electrically connected D4 500 Current consumption 6 Current consumption The following table contains information on the typical current consumption depending on the output power level root mean square value Apys All values based on a 230 V mains voltage and a 1 kHz input signal at 0 dB
9. it or just in poor transmission quality Balanced and unbalanced trans Unbalanced transmission is mainly used in semi professional environment and in hifi use mission Instrument cables with two conductors one core plus shielding are typical representatives of the unbalanced transmission One conductor is ground and shielding while the signal is trans mitted through the core Unbalanced transmission is susceptible to electromagnetic interference especially at low levels such as microphone signals and when using long cables In a professional environment therefore the balanced transmission is preferred because this enables an undisturbed transmission of signals over long distances In addition to the conduc tors Ground and Signal in a balanced transmission a second core is added This also transfers the signal but phase shifted by 180 th mann MUSIC IS OUR PASSION 23 Plug and connection assignment Since the interference affects both cores equally by subtracting the phase shifted signals the interfering signal is completely neutralized The result is a pure signal without any noise inter ference 1 4 TS phone plug mono unbalanced 1 4 TRS phone plug mono bal anced th mann MUSIC IS OUR PASSION 24 1 4 TRS phone plug stereo unbalanced Ys XLR plug balanced SS w N Signal left Signal right Ground Ground shielding Signal in phase
10. rview of the meaning of symbols and signal words that are used in this manual th mann MUSIC IS OUR PASSION Signal word DANGER CAUTION NOTICE Warning signs A A General information This combination of symbol and signal word indicates an immediate dangerous situation that will result in death or serious injury if it is not avoided This combination of symbol and signal word indicates a pos sible dangerous situation that can result in minor injury if it is not avoided This combination of symbol and signal word indicates a pos sible dangerous situation that can result in material and environmental damage if it is not avoided Type of danger Warning high voltage Warning danger zone th mann MUSIC IS OUR PASSION Safety instructions 2 Safety instructions Intended use This device amplifies electric audio frequency signals to operate passive speakers Use the device only as described in this user manual Any other use or use under other operating con ditions is considered to be improper and may result in personal injury or property damage No liability will be assumed for damages resulting from improper use This device may be used only by persons with sufficient physical sensorial and intellectual abilities and having corresponding knowledge and experience Other persons may use this device only if they are supervised or instructed by a person who is responsible for their safety DANGER D
11. se suffi cient ear protectors NOTICE Risk of fire Do not cover the device nor any ventilation slots Do not place the device near any direct heat source Keep the device away from naked flames th mann MUSIC IS OUR PASSION 10 Safety instructions NOTICE Operating conditions This device has been designed for indoor use only To prevent damage never expose the device to any liquid or moisture Avoid direct sunlight heavy dirt and strong vibrations NOTICE Power supply Before connecting the device ensure that the input voltage AC outlet matches the voltage rating of the device and that the AC outlet is protected by a residual current circuit breaker Failure to do so could result in damage to the device and possibly injure the user Unplug the device before electrical storms occur and when it is unused for long periods of time to reduce the risk of electric shock or fire th mann MUSIC IS OUR PASSION 11 Safety instructions NOTICE Magnetic fields The device generates strong magnetic fields that can interfere with the function of poorly shielded devices The strongest magnetic fields are directly above and below the power amplifier Therefore never place sensitive devices such as pre amplifiers radio transmission systems or tape decks directly above or below the power amplifier When installing the power amplifier into a rack you should place it in the lowest position and further equipment
12. the t amp D4 500 digital power amplifier th mann user manual MUSIC IS OUR PASSION Musikhaus Thomann Thomann GmbH Hans Thomann Stra e 1 96138 Burgebrach Germany Telephone 49 0 9546 9223 0 E mail info thomann de Internet www thomann de 17 07 2015 ID 218916 V2 Table of contents vo a vu B w N Table of contents General information cccccccesssessessessssssssssssessessesssesssssssssessssseseesecseesseeseesessssancancesesssssseeseeseeneenses 4 1 1 Further information 1 2 Notational conventions 6 1 3 Symbols and signal WOrdS ssersseerseeerssevssserasserasserassersssesssssesssreeseresserenserrsseeesssesseesssersssseessersssssene 6 Safety instructions nennen rendent aad tas neden dnek 8 Se Installation and operation Connections and controls SE E Current consumptiOM eneen Technical specificatiOns na nanenansenssennennsensenn Plug and connection assignment saansennnr eenn Cle ning nennen nende ddende deden antal tenderen Protecting the environment nnn nan sana eans saar eeenneeenesenseeuneanunoevansceneeenneenneeeneeennes 28 th mann MUSIC IS OUR PASSION General information 1 General information This manual contains important instructions for the safe operation of the unit Read and follow the safety instructions and all other instructions Keep the manual for future reference Make sure that it is available to all thos
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