General information 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.
General information 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 Keyword search interest for you quickly.
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.
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NOTICE! 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. Warning signs Type of danger Warning – high-voltage. ASM5...
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General information Warning signs Type of danger Warning – suspended load. Warning – danger zone. active studio monitor...
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. ASM5...
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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. DANGER! Electric shock caused by short-circuit Always use proper ready-made insulated mains cabling (power cord) with a pro‐ tective contact plug.
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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. ASM5...
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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.
Switch for adapting treble and bass to the room acoustics Switchable low-pass filter with a variable crossover frequency Housing made of vinyl-coated MDF Protection circuits against radio interference, over temperature, on / off switching noise and to limit output current Standby function ASM5...
Installation 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.
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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. ASM5...
Connections and operating elements 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.
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Connections and operating elements Rear panel ASM5...
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Connections and operating elements 1 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 supply. 2 [Power] Mains switch.
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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. ASM5...
Plug and connection assignment 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 & 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’...
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The result is a pure signal without any noise inter‐ ference. 1/4" TRS phone plug (mono, bal‐ anced) Signal (in phase, +) Signal (out of phase, –) Ground XLR plug (balanced) Ground, shielding Signal (in phase, +) Signal (out of phase, –) ASM5...
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Plug and connection assignment RCA connection Drawing and table indicate the pin assignment of an RCA plug. Signal Ground, shielding active studio monitor...
3. Check the signal cables and / or the signal source. 4. Try using another signal cable. Once the music gets loud, the Maybe overheating is imminent. Provide better ventila‐ high frequencies slump tion or reduce the volume. Distortion is audible Excessive input signal. Reduce the signal level. ASM5...
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2. Make sure that all audio devices are connected to the same power circuit and thus share the same ground ref‐ erence. If the procedures recommended above do not succeed, please contact our Service Center. You can find the contact information at www.thomann.de. active studio monitor...
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. ASM5...
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