thomann the box pro A 121 LA User Manual Download | Manualshive

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A 121 LA

active subwoofer

user manual

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Summary of Contents for the box pro A 121 LA

Page 1: ...A 121 LA active subwoofer user manual ...

Page 2: ...Musikhaus Thomann Thomann GmbH Hans Thomann Straße 1 96138 Burgebrach Germany Telephone 49 0 9546 9223 0 E mail info thomann de Internet www thomann de 05 02 2019 ID 447348 V2 ...

Page 3: ... 1 3 Symbols and signal words 7 2 Safety instructions 9 3 Features 13 4 Installation 14 5 Connections and controls 16 6 Starting up 21 7 Networking and remote control 24 8 Technical specifications 27 9 Plug and connection assignment 30 10 Protecting the environment 32 Table of contents A 121 LA 3 ...

Page 4: ...t is available to all persons using this device If you sell the device to another user be sure that they also receive this manual Our products and user manuals are subject to a process of continuous development We there fore reserve the right to make changes without notice Please refer to the latest version of the user manual which is ready for download under www thomann de General information act...

Page 5: ...word search Use the search function in the electronic version to find the topics of interest for you quickly Online guides Our online guides provide detailed information on technical basics and terms Personal consultation For personal consultation please contact our technical hotline Service If you have any problems with the device the customer service will gladly assist you General information A ...

Page 6: ...brackets and italics Examples VOLUME control Mono button The individual steps of an instruction are numbered consecutively The result of a step is indented and highlighted by an arrow Example 1 Switch on the device 2 Press Auto ð Automatic operation is started 3 Switch off the device Letterings Instructions General information active subwoofer 6 ...

Page 7: ...iate dangerous situation that will result in death or serious injury if it is not avoided CAUTION This combination of symbol and signal word indicates a pos sible dangerous situation that can result in minor injury if it is not avoided 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 avoide...

Page 8: ...Warning signs Type of danger Warning high voltage Warning danger zone General information active subwoofer 8 ...

Page 9: ...sorial 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 deta...

Page 10: ...ide 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 Do not modify the mains cable Failure to do so could result in electric shock death or fire If in doubt seek advice from a registered electrician Safety instructions active subwoofer 10 ...

Page 11: ...itical 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 block areas of ventilation Do not install the device near any direct heat source Keep the device away from naked flames Safety instructions A 121 LA 11 ...

Page 12: ...cting 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 Safe...

Page 13: ...ocket for signal input XLR chassis plug for signal output n Lockable in and output socket Power Twist for power supply n Network port for controlling notebooks computers using the Pronet software n Water repellent membrane coating n Compact 18 mm birch multiplex enclosure n Black textured coating n Four 100 mm heavy duty casters included Features A 121 LA 13 ...

Page 14: ... packaging or your own packaging material suitable for transport or storage respectively Create all connections while the device is off Use the shortest possible high quality cables for all connections Take care when running the cables to prevent tripping hazards CAUTION Risk of injury due to heavy weight Due to the heavy weight of the device at least two persons are required for trans port and in...

Page 15: ...ty 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 Installation A 121 LA 15 ...

Page 16: ...5 Connections and controls Connections and controls active subwoofer 16 ...

Page 17: ...d of the device Switching only has an effect when using balanced connection cables 3 Audio signal output with XLR chassis plug to connect other line array elements or speakers to which the input signal is passed 4 Pushbutton TERMINATE If the devices is networked together with Line Array elements the last unit must be terminated with the built in load resistance Press the switch TERMINATE The LED a...

Page 18: ...LED LED indicator of the selected DSP preset n STANDARD This setting is suitable for all applications where the frequency range up to 90 Hz is to be transmitted and ampli fied The setting is suitable for most environments and for combinations with vertically flown Line Arrays n INFRA This setting can be used when a deeper response in the bass range is required This will slightly reduce the sound p...

Page 19: ...8 SIGN LIMIT This LED lights green when an input signal is present This LED lights red when the internal output signal is limited due to excessive input signal level 9 PROT This LED lights red when the protection circuit of the amplifier module responds due to an internal error and the amplifier is therefore muted This LED lights red when the internal output signal is limited due to excessive inpu...

Page 20: ...Twist input socket of the other device To disconnect the other device pull the locking lever on the plug backwards and turn the plug counter clockwise 12 MAINS IN Lockable input socket Power Twist To turn on the device insert the Power Twist power cable or Power Twist con nection cable from another unit into this socket and lock the plug by turning it clockwise To turn off the device pull the lock...

Page 21: ...t connectors Set the desired DSP preset STANDARD INFRA CARDIOID or USER The units can be combined vertically or horizontally to subwoofer stacks Of each three devices the middle one should aim to the stage working with the DSP preset CARDIOID The other two devices point toward the audience and work with the DSP preset STANDARD By this configuration the bass level for the artists on stage is reduce...

Page 22: ...1 Stage 2 Wall or huge obstacle Starting up active subwoofer 22 ...

Page 23: ...ditorium 4 Doubled bass 5 Reduced bass Subwoofer stacks must be placed at a minimum distance of 80 cm from walls and fixed obsta cles so that the sound is not affected by reflections Starting up A 121 LA 23 ...

Page 24: ... the individual devices of the entire audio system can be networked and remote controlled with a notebook computer using the Pronet soft ware The communication protocol used in the Pronet network is CanBus Network capability Networking and remote control active subwoofer 24 ...

Page 25: ...45 network cables Beginning and end of the net work bus must be terminated The beginning is terminated by a USB2CAND converter optional accessory part no 440591 At the end the TERMINATE switch must be pressed on the rear panel of the last unit to enable the built in terminating resistor for termination The TERMINATE switch on all units between the USB2CAND converter and the last device must not be...

Page 26: ...n the desired order 3 Press the TERMINATE button on the rear panel of the last unit 4 Turn on the first device while holding down its PRESET button on the rear panel 5 Leave the first device turned on and repeat step 4 for all other devices until the last device is turned on When a new device is to be added only step 4 must be repeated Each device keeps its ID even if it is turned off as it is sto...

Page 27: ...oft ware Signal transmission XLR chassis socket Input impedance 20 kΩ balanced 10 kΩ unbalanced Input sensitivity 4 dBu 1 25 V Output connections Voltage supply Lockable output socket Power Twist for the power supply of further units Data interface RJ45 output for control using Pronet soft ware Signal transmission XLR chassis plug Output power 2000 W RMS Technical specifications A 121 LA 27 ...

Page 28: ... 141 dB Power consumption 700 W nominal 1700 W maximum Operating supply voltage AC 230 V 50 Hz Dimensions W H D 511 mm 554 mm 770 mm Weight 64 kg 67 kg including casters Ambient conditions Temperature range 0 C 40 C Relative humidity 50 non condensing Technical specifications active subwoofer 28 ...

Page 29: ...Design Bandpass filter Truss capable No Tripod mounting Yes Casters Yes Woofers 1 21 Power rating 2000 W Further information Technical specifications A 121 LA 29 ...

Page 30: ...ors 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 prefer...

Page 31: ...hifted signals the interfering signal is completely neutralized The result is a pure signal without any noise inter ference 1 Ground shielding 2 Signal in phase 3 Signal out of phase 4 Shielding on plug housing option XLR plug balanced Plug and connection assignment A 121 LA 31 ...

Page 32: ...e notes and markings on the packaging This product is subject to the European Waste Electrical and Electronic Equipment Directive WEEE in its currently valid version 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 co...

Page 33: ...Notes A 121 LA 33 ...

Page 34: ...Notes active subwoofer 34 ...

Page 35: ......

Page 36: ...Musikhaus Thomann Hans Thomann Straße 1 96138 Burgebrach Germany www thomann de ...

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