Limit 2/2 limiter user manual
Contents
1. Disposal of your old device themann 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 device is subject to the European directive 2002 96 EC Do not dispose of the device 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 limiter 22 Musikhaus Thomann e K Treppendorf 30 96138 Burgebrach Germany www thomann de2. 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 Limit 2 2 th mann MUSIC IS OUR PASSION Features 3 Features themann MUSIC IS OUR PASSION The limiter is ideal to protect sensitive amplifier inputs against overloading The digital signal processors reduce the dynamics of the input signal by an adjustable value Both stereo chan nels are processed interdependently and compressed by the same ratio The channel with the higher dynamic controls both channels Special features of the device Fixed values for attack and release time A D and D A converters with high resolution High sampling rate Adjustable threshold limiter 10 4 Installation Installation Unpack and check carefully 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 suitabl
3. d cautiously from an initially strong limiting towards lower settings If it is technically possible in your system please try without connected speakers first Observe the operating instructions of the amplifier limiter 14 Connections and operating elements 6 Connections and operating elements Front panel Y the L amp t racks Limit 2 2 Limit 2 2 th mann MUSIC IS OUR PASSION 15 Connections and operating elements 1 OUTPUT LEVEL The LED chains indicate the output level of the left and right channel 2 INPUT CLIP This LED indicates an excessive input level overloading the input If this happens reduce the output level of the con nected device 3 LEFT LIMIT Indicates active limiting in the left channel 4 RIGHT LIMIT Indicates active limiting in the right channel th mann limiter MUSIC IS OUR PASSION 16 Connections and operating elements 5 THRESHOLD Rotary switch for threshold setting Before adjusting this value remove the transparent plastic cover and turn the switch with a suitable screwdriver to the desired value between 9 dBu bypass no limiting and 22 dBu To protect the switch against unintended adjusting refit the plastic cover 6 POWER This LED indicates that the unit is turned on Limit 2 2 th mann MUSIC IS OUR PASSION 17 Connections and operating elements Rear panel th mann limiter MUSIC IS OUR PASSION 18 Connections and operating element
4. e 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 Limit 2 2 th mann MUSIC IS OUR PASSION 11 Installation XLR connections for signal in Balanced XLR chassis sockets serve as signal inputs XLR chassis plugs serve as signal outputs and outputs Drawing and table indicate the XLR pin assignment 1 Ground shielding 2 Signal 3 Signal Phone plugs for signal in and Drawings and tables indicate the pin assignment for 1 4 phone plugs unbalanced and bal outputs anced 1 Signal R 2 Ground shielding th mann limiter MUSIC IS OUR PASSION 12 Installation 1 Signal te 2 Signal 3 Ground shielding Rack mounting The unit has been designed for rack mounting in a standard 19 inch rack it occupies one rack unit Limit 2 2 th mann MUSIC IS OUR PASSION 13 Starting up 5 Starting up themann MUSIC IS OUR PASSION Connect the line outputs left and right of the audio device whose level is to be limited for example your mixer to the inputs of the limiter Connect the outputs of the limiter to the line inputs of your amplifier Connect the limiter to the power supply and switch it on Test the threshold setting until the amplifier is protected against overloading but the limiting of the signal dynamics is only as little as possible To protect your speakers procee
5. s 7 INPUTS Right and left channel inputs XLR chassis socket E 1 4 phone socket balanced or unbalanced 8 OUTPUTS Right and left channel outputs XLR chassis socket E 1 4 phone socket balanced or unbalanced 9 Slide switch for mains voltage setting 10 IEC chassis connector with fuse holder Always make sure that the slide switch 9 is et to the correct position before you connect the mains voltage here 11 Main switch to turn the device on or off Limit 2 2 th mann MUSIC IS OUR PASSION 19 Technical specifications 7 Technical specifications Inputs XLR chassis sockets 1 4 phone sockets Maximum input level 9 dBu Outputs XLR chassis plugs 1 4 phone sockets Maximum output level 9 dBu THD in Bypass mode 6dbFS lt 0 01 Frequency response 0 5 dB 20 Hz 20 kHz Signal to noise ratio gt 103 dBu in Bypass mode Resolution A D and D A conversion 24 bit Resolution internal processing 24 x 48 bit with 96 bit accuracy for intermediate steps Attack time 80 us Release time 600 ms Operating supply voltage AC 220 240 V 50 Hz th mann limiter MUSIC IS OUR PASSION 20 Technical specifications Power consumption 10 5 W Fuse 250 mA 250 V 5 mm x 20 mm Dimensions W x D x H 482 mm x 175 mm x 44mm Weight 2 5 kg Limit 2 2 th mann MUSIC IS OUR PASSION 21 Protecting the environment 8 Protecting the environment Disposal of the packaging mate rial
6. sons using this device If you sell the device include the manual for the next owner Our products are subject to a process of continuous development We therefore reserve the right to make changes without notice This section provides an overview of the symbols and signal words used in this user manual limiter Signal word DANGER NOTICE Warning signs A A Limit 2 2 General notes Meaning 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 possible dangerous situation that can result in material and environmental damage if it is not avoided Type of danger Warning high voltage Warning danger zone themann MUSIC IS OUR PASSION Safety instructions 2 Safety instructions Intended use themann MUSIC IS OUR PASSION This device is intended to be used to limit the dynamics of signals from audio devices and musical instruments 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 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 O
7. the t racks Limit 2 2 limiter th mann user manual MUSIC IS OUR PASSION Musikhaus Thomann e K Treppendorf 30 96138 Burgebrach Germany Telephone 49 0 9546 9223 0 E mail info thomann de Internet www thomann de 22 01 2013 Table of contents on AO vu A WN Table of contents General OCS 5 iscsi ciccscaisscesaccccadcacciececsscdecceas ulesdescctscceiatacsiwsuuteattacesscacesctaceievasdocracedos eieadbcoasosedeadbicd asesdass 4 Safety instructions Features Dr stea Ath IN eos cas cccsctcnnsvcssvicacaussceayactcdbaveeaayasceunsvteavvesdeayevesavsvtcaavevcsava bcanseveasvevecavsvedapevdsanovedavaneduivesstie Starting UP ennnen EIER ELENA vette case EAE TEE EEE E 14 Connections and operating eleMent 0 csessscssssecssssecsnscecssseecsnseecsnseecsnseersnscecsnseecsnseessee 15 Technical specifications ccccessssssssssssssssssecsesssssssssssssssessessssssscsssessscssscescssscssscescsnssssessseesseeses 20 Protecting the EnvironMent 0 ccccsccssscssseccssecseecssscessecsssccsscesssccesccesecsuscesscesseecescesseecsneeeseeesees 22 Limit 2 2 th mann MUSIC IS OUR PASSION General notes 1 General notes Symbols and signal words themann MUSIC IS OUR PASSION This user manual contains important information on safe operation of the device Read and follow all safety notes and all instructions Save this manual for future reference Make sure that it is available to all per
8. ther persons may use this device only if they are supervised or instructed by a person who is responsible for their safety limiter Safety instructions 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 DANGER Electric shock caused by high voltages inside Within the device there are areas where high voltages may be present Never remove any covers A There are no user serviceable parts inside Limit 2 2 th mann MUSIC IS OUR PASSION Safety instructions themann MUSIC IS OUR PASSION 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 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 limiter Safety instructions NOTICE Operating conditions This device has been designed for indoor use only To prevent damage never
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