E4-130, E4-250 power amplifier user manual
Contents
1. 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 circuit or just in poor transmission quality Unbalanced transmission is mainly used in semi professional environment and in hifi use 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 26 XLR plug balanced EN XLR plug unbalanced EN 1a conne n ass gnm ant lt 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 wi2. th mann MUSIC IS OUR PASSION 12 3 Features Features Low mounting depth of only 408 mm Output power the t amp E4 130 item no 348232 4x 130W 80 4x 200W 40 the t amp E4 250 item no 348233 4x 400 W 40 4x 250W 80 Inputs XLR Outputs NL4 speakON connectors for speakers Protection circuits DC short circuit overtemperature limiter soft start Defeatable standby function th mann MUSIC IS OUR PASSION 13 Installation and operation 4 Installation and operation th mann MUSIC IS OUR PASSION 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 Establish all connections as long as the unit is switched off Use the shortest possible high quality cables for all connections DANGER Electric shock caused by high voltages at the power amplifier output The output voltages of modern high performance amplifiers may result in death or serious injury Never touch the bare ends of loudspeaker cables when the amplifier is on 14 Installation and operation NOTICE Magnetic fields The device generates strong magnetic fields that can interfere with the function of poorly shielded devices The strongest magnetic fields are dire
3. ICE 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 notes 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 notes 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 such as pre amplifiers in the highest position
4. can use this switch to disconnect the connection between the earth pin of the device and the signal ground of the device 15 Stand by ON OFF On off switch for standby function If the standby function is enabled the device automatically switches to standby mode after thirty minutes without any input signal th mann 23 6 Technical specifications Output power RMS stereo 8 O Output power RMS stereo 4 Q Output power RMS bridged 8 O Max power consumption Frequency response 0 5 dB Input sensitivity Class Signal to noise ratio THD Crosstalk at rated power 8 Q 1 kHz Damping factor at rated power 8 O 1 kHz 24 the t amp E4 130 item no 348232 4x 130 W 4x 200 W 2 x 400 W 1500 W 40 20 Hz 20 kHz 1000 mV AB gt 94 dB lt 0 05 gt 64 dB gt 200 power amplifier the t amp E4 250 item no 348233 4x 250 W 4 x 400 W 2 x 800 W 2700 W 40 Slew rate Inputs Input impedance Outputs Operating supply voltage Dimensions W x H x D Weight the t amp E4 130 item no 348232 15 V wus XLR sockets 20 kO balanced 10 kQ unbalanced speakON chassis connector AC 230 V 50 Hz 482 mm x 88 mm x 408 mm 12 9 kg E4 130 E4 250 the t amp E4 250 item no 348233 15 0 kg 25 Plug and connection assignment 7 Plug and connection assignment Introduction Balanced and unbalanced trans mission th mann MUSIC IS OUR PASSION This chapter will
5. ctly 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 such as pre amplifiers in the highest position th mann MUSIC IS OUR PASSION 15 Possible operation modes Depending on the individual application the amplifier can be used in different operation modes Stereo mode a The two amplifier channels operate independently of one another either channel A and B is amplified and connected to loudspeakers the volume can a gt 4 be controlled separately for the two outputs Parallel mode IE The two amplifier channels receive the same input signal from channel A and loudspeakers are connected to each amplifier the volume is controlled via the a control knob for channel A Bridged mode The two amplifier channels are internally connected in such a way that twice o p d the output power is available Only the input signal from channel A is amplified and loudspeakers are connected only to the correspondingly marked output The volume is controlled via the control knob for channel A power amplifier 16 Rack mounting Installation and operation For each output of the amplifier the total impedance resulting from the lo
6. ience Other persons may use this device only if they are supervised or instructed by a person who is responsible for their safety DANGER Danger 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 notes 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 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 notes CAUTION Possible hearing damage With loudspeakers or headphones connected the device can produce volume levels that may cause temporary or permanent hearing impairment Do not operate the device permanently at a high volume level Decrease the volume level immediately if you experience ringing in your ears or hearing impairment NOT
7. ing Protecting the environment usneneesennseennseunssennssnnssensssnnnsnnnssunnssussensssnnssensssnnssnnnssenne 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 those 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 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 nee interest for you quickly A i Our online guides provide detailed information on technical basics Online guides and terms Personal consultation For personal consultation please contact our technical hotline If you have any problems with the device the Service 4 customer service will gladly assist you E4 130 E4 250 General information 1 2 Notational conventions This manual uses the following notational conventions Letterings The letterings for connectors and control
8. ns that apply in your country If in doubt consult your local waste disposal facility th mann MUSIC IS OUR PASSION 30 Musikhaus Thomann Treppendorf 30 96138 Burgebrach Germany www thomann de
9. pair is operated in Bridged mode SIG Indicates the presence of an input signal E4 130 E4 250 6 CLIP Lights under the following conditions Channel overload Reduce in this case the volume until the LED goes out Output short circuit Turn off the device immediately correct the short circuit and turn on the device again 7 PRO Lights under the following conditions 20 Three to five seconds after switching on or off when the device is in an unstable condition No speaker connected The temperature of the power amp blocks has reached 85 C One or more protection circuits have been triggered or the device is faulty power amplifier Connections and operating elements Rear panel amp th mann 21 22 IEC chassis connector for the power supply of the device BREAKER Resettable electronic fuse If the fuse is triggered fix the cause and then push the button to reset the fuse INPUT XLR chassis sockets as inputs for channels 1 to 4 OUTPUT speakON chassis connectors as speaker outputs 1 2 positive 1 2 negative for channels 1 to 4 Selector switch for the operating mode of the respective channel pair Par Parallel mode Str Stereo mode Bri Bridged mode LIMIT Limits the output level so that the distortion is at most 5 power amplifier Connections and operating elements 14 Gnd Lift Ground lift switch If hum is caused by a ground loop you
10. s are marked by square brackets and italics Examples VOLUME control Mono button 1 3 Symbols and signal words In this section you will find an overview 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 notes 2 Safety notes 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 exper
11. the t amp E4 130 E4 250 power amplifier th mann user manual MUSIC IS OUR PASSION Musikhaus Thomann Treppendorf 30 96138 Burgebrach Germany Telephone 49 0 9546 9223 0 E mail info thomann de Internet www thomann de 06 03 2015 ID 348232 348233 Table of contents vo a vu A w N Table of contents General information cccccccesssssessessssssssssssessessesssessesssssscessssseseesecseesseeseesessssancancesessussseeseeseeneenses 4 1 1 Further information 1 2 Notational conventions 6 1 3 Symbols and signal WOrdsS ssscsssccsssecssecsnsecssssessscesecsssscsssecsescesseeesssecsssceeseeesaeecsneessnceesneeeseeeeses 6 Safetyinotes neiienes iiia aaa i aE Naadi aandie aadd i 8 Features cd sovstaersavonsenvectondosvsssoeudedsususesduetGserssetlvebiayslddeverinetuaveaboeacbepdsbetbitey ctdedeusttasetovorss Installation and operation Connections and operating elements Technical specifications Plug and connection assignment Clean
12. thout any noise inter ference w N w N Ground shielding Signal in phase Signal out of phase Ground shielding Signal Bridged to pin 1 E4 130 E4 250 27 Plug and connection assignment NL4 mounting connectors themann MUSIC IS OUR PASSION 28 Cleaning 8 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 29 Protecting the environment 9 Protecting the environment Disposal of the packaging mate rial 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 Disposal of your old device 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 regulatio
13. udspeakers con nected to it must not be below the allowed minimal impedance of the amplifier output If you connect more than one loudspeaker to an amplifier output please note the following If the loudspeakers are connected in a series the individual impedances will be added up If the loudspeakers are connected in parallel the reciprocal of the total impedance equals the sum of the reciprocals of the individual impedances Example If you have two loudspeakers with the same impedance their impedance doubles if they are connected in a series their impedance halves if they are connected in parallel For detailed information related to this topic please refer to our Online Guide PA Speakers www thomann de The device has been designed for rack mounting in a standard 19 inch rack it occupies two rack units th mann MUSIC IS OUR PASSION 17 Connections and operating elements 5 Connections and operating elements bes ine 8e amp YY 6668 MMW POWER Mains switch Turns the device on and off The corresponding LED lights up green when the device is turned on In standby mode the LED lights red As soon as the unit receives a signal it switches back to normal mode and the LED will light up green again CH 1 CH 2 Volume control for the respective channel CH 3 CH 4 PAR Lights up when the respective channel pair is operated in Parallel mode BRI Lights up when the respective channel
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