ASM7 active studio monitor user manual
Contents
1. themann MUSIC IS OUR PASSION 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 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 22 1 4 TRS phone plug mono bal anced y XLR plug balanced EN Since the interference affects both cores equally by subtracting the phase shifted signals the interfering signal is completely neutralized2. The result is a pure signal without any noise inter ference 1 Signal in phase 2 Signal out of phase 3 Ground 1 Ground shielding 2 Signal in phase 3 Signal out of phase ASM7 23 Plug and connection assignment RCA connection Drawing and table indicate the pin assignment of an RCA plug themann MUSIC IS OUR PASSION 24 8 Troubleshooting In the following we list a few common problems that may occur during operation We give you some suggestions for easy troubleshooting Symptom The unit does not work No sound Once the music gets loud the high frequencies slump Distortion is audible ASM7 Remedy Check the power supply terminal and the position of the power switch 1 Check the position of the volume control 2 Check the correct connection of the signal cables 3 Check the signal cables and or the signal source 4 Try using another signal cable Maybe overheating is imminent Provide better ventila tion or reduce the volume Excessive input signal Reduce the signal level 25 Troubleshooting If the procedures recommended above do not succeed please contact our Service Center You can find the contact information at www thomann de themann MUSIC IS OUR PASSION 26 Protecting the environment 9 Protecting the environment Disposal of the packaging mate rial For the transport and protective packaging environmentally friendly mater
3. SFUVSION C ASM7 active studio monitor themann 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 11 08 2015 ID 350077 Table of contents W On Au P W N Table of contents General Intormation ENEE A 1 1 Further information 1 2 Notational conventions 1 3 Symbols and signal words 6 Safety NstrUuctiONS iii iii didas 9 Features ii A iii Installation Connections and operating elements ENEE Technical specifications Plug and connection assignment nuneeeseeenneen Troubleshooting essere Protecting the environment themann 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 themann 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 Onlin
4. al 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 themann MUSIC IS OUR PASSION General information Warning suspended load N Warning danger zone themann MUSIC IS OUR PASSION Safety instructions 2 Safety instructions Intended use Safety This device is primarily designed for monitoring during audio recording and mixing in the studio Use the device only as described in this user manual Any other use or use under other operating conditions is considered to be improper and may result in personal injury or prop erty 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 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 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 themann MUSIC IS OUR PASSION Safety instructions DANGER Ele
5. ctric 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 themann MUSIC IS OUR PASSION 10 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 use 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 themann MUSIC IS OUR PASSION 11 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 c
6. e 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 ASM7 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 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 themann MUSIC IS OUR PASSION Signal word DANGER WARNING CAUTION NOTICE Warning signs 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 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 sign
7. ials 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 regulations that apply in your country If in doubt consult your local waste disposal facility themann MUSIC IS OUR PASSION 27 Notes themann 28 Notes themann 29 Notes themann 30 Musikhaus Thomann Hans Thomann Stra e 1 96138 Burgebrach Germany www thomann de
8. ns WARNING Risk of injury caused by falling objects Make sure that the installation complies with the standards and rules that apply in your country Always secure the device with a secondary safety attachment such as a Safety cable or a safety chain themann MUSIC IS OUR PASSION 14 Installation NOTICE Possible property damage by magnetic fields Loudspeakers produce a static magnetic field Therefore maintain an appropriate distance to devices that can be adversely affected or damaged by an external magnetic field NOTICE Use of stands When mounting the device onto a stand ensure that the stand is in a safe and stable position and that the weight of the device does not exceed the maximum permissible load capacity of the stand themann MUSIC IS OUR PASSION 15 Connections and operating elements 5 Connections and operating elements Control LED on the front panel If the speaker box receives no signal for 10 to 15 minutes it switches to standby mode The control LED on the front panel then lights red As soon as the speaker box receives a signal it switches back to normal mode and the LED will turn blue themann MUSIC IS OUR PASSION 16 Connections and operating elements Rear panel themann 17 IEC chassis plug with fuse holder Connection for the power supply If the fuse blows replace it with a new fuse of the same type You must first disconnect the device from the power su
9. onnecting 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 themann MUSIC IS OUR PASSION 12 Features 3 Features Special features of the device D 2 way system 6 1 2 bass mid range speaker and 1 tweeter D XLR 1 4 and RCA inputs Bi amping amplifier class AB P Switch for adapting treble and bass to the room acoustics P Switchable low pass filter with a variable crossover frequency S Housing made of vinyl coated MDF S Protection circuits against radio interference over temperature on off switching noise and to limit output current Standby function themann MUSIC IS OUR PASSION 13 Installation 4 Installation 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 connectio
10. pply Power Mains switch Turns the device on and off XLR chassis socket Connection for a balanced line input signal Volume Volume control HF Trim Switch to adapt the treble to the room acoustics 2 dB 0 dB 2 dB active studio monitor Connections and operating elements 6 Acoustic Space Switch to adapt the bass frequencies to the room acoustics 0 dB 2 dB 4 dB 7 LF Cutoff Switchable low pass filter with variable crossover frequency flat 80 Hz 100 Hz 8 RCA jack to connect line level source devices unbalanced 9 1 4 phone socket for balanced input signal themann MUSIC IS OUR PASSION 19 6 Technical specifications Speakers Frequency response Crossover frequency Inputs Output power Maximum sound pressure level in 1 m distance Signal to noise ratio Input impedance Input sensitivity Operating supply voltage 20 6 1 2 bass mid range speaker and 1 tweeter 45 Hz 20 kHz 2 7 kHz 1 4 phone socket balanced XLR chassis socket balanced RCA unbalanced Bass mid range amp 60 W Treble amp 20 W 102 dB gt 98 dB typical A weighted 20 kO balanced 10 kQ unbalanced 85 V pink noise for 102 dB SPL in 1 m distance volume control 100 AC 230 V 50 Hz active studio monitor Technical specifications themann 21 Plug and connection assignment 7 Plug and connection assignment Introduction Balanced and unbalanced trans mission
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