APart CHAMP-ONE
Contents
1. ADapr MANUAL We ANAANAN Dyn il Champ One Audiophile Stereo Power Amplifier INFO APART AUDIO COM dDapr Safety First Caution hot and sharp surfaces This professional device needs to be installed by qualified personnel only Please check the carton box for any kind of damage on reception of the goods In case of a damaged carton please contact your dealer before opening the carton I l Danger Exposure to extremely high noise levels may cause a permanent hearing loss Individuals vary considerably to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient amount of time Therefore it is recommended that all persons exposed to equipment capable of producing high sound pressure levels such as this amplifier be protected by hearing protection while installing or operating this unit Read all documentation before operating your equipment Keep all documentation for future reference Save the carton and packing material even if the equipment has arrived in good condition Should you ever need to ship the unit use only the original factory packing Do not spill water or other liquids into or on the unit Make sure power outlets conform to the power requirements listed on the back of the unit Do not use the unit if the electrical power cord is frayed or broken Always operate the unit with the AC ground wire connected to2. 19 brackets and handles for an even more sleek and refined look Remove the three screws marked in the circles and slide off the handles om i F F pi ki aa i m a te i 5 a Ne ig Pe I ge T ee a re 4 ig r a INFO APART AUDIO COM dPapr 6 Technical specifications Rated output power both channels driven Dynamic program power both channels driven Dynamic capacity at 1 7 ohm both channels 1000 W ch driven Sine wave power both channels driven not recommended for reference only This amplifier is designed for an audiophile music experience not for lab testing Bridge mono operation 8 ohm 900 W 2 channel mode 8 ohm 300 W ch 2 channel mode 4 ohm 450 W ch 14 WWW APART AUDIO COM ADapr General technical specifications Input impedance sensitivity unbalanced 10 Kohm 1 V OdBV RCA 4 ohm Input impedance sensitivity balanced XLR 20 Kohm 1 V 0 dBV 4 ohm Efficiency dynamic program of 10 dB 1 V gt 70 input Protection circuits DC HF clip overcurrent short circuit Temperature protection 2 step channel transformer 105 C Mains power requirements 230VAC 50Hz Physical specifications Net dimensions cm W x H x D 48 3 X 8 8 X 38 Gross dimensions cm W x H x D 58 5 x 15 5 x 56 5 Net weight 13 kg Gross weight 19 kg INFO APART AUDIO COM APC ANY SUGGESTION They are well appreciated and event
3. MUST turn off power wait for cooling down and then power on again 5 Power switch and power led flip the switch to power on the amplifier The led will light up to indicate that mains power is present INFO APART AUDIO COM dDaptr 6 Signal led right channel this led lights up green when a sufficiently strong signal is present on the right channel after passing the input level control When it lights up red the power amp is overheated or in protect mode and is shut down Turn off the power The amplifier will not turn on automatically after an error condition the user MUST turn off power wait for cooling down in case of overtemperature or remove the overload and then power on again 7 APC activity led right channel this led lights up when the APC circuitry is active The APC circuitry reduces the gain at the inputs to guarantee the full dynamic range of the power amplifier circuits 8 Clip led right channel this led lights up whenever the ultrafast clip limiter becomes active This is a warning sign you are pushing things a little too far reduce the input level by a few dB so that this led never lights up anymore Don t ignore this Temp led right channel this led lights up when the amplifier is about to overheat Input gain will automatically be reduced by the APC circuitry to avoid further overheating This part of the protection circuit resets itself automatically when temperature has normalized Caution tu
4. and is shut down Turn off the power The amplifier will not turn on automatically after an error condition the user MUST turn off power wait for cooling down in case of overtemperature or remove the overload and then power on again 2 APC activity led left channel this led lights up when the APC circuitry is active The APC circuitry reduces the gain at the inputs to guarantee the full dynamic range of the power amplifier circuits 3 Clip led left channel this led lights up whenever the amplifier clips This is a warning sign you are pushing things a little too far or overloading the amp minimum load impedance is 4 ohms in 2 channel mode or 8 ohms in bridge mode Reduce the input level by a few dB so that this led never lights up anymore Don t ignore this 4 Temp led left channel this led lights up when the amplifier is about to overheat Output power will automatically be limited by the APC circuitry to avoid further overheating This part of the protection circuit resets itself automatically when temperature has normalized Caution turning off the APC circuit rear switch 15 will also turn off this protection feature and will void warranty When both signal led 1 and temp led 4 are red it is possible that the power transformer s thermal protection is active and the amplifier is shut down Turn off the power and let it cool down The amplifier will not turn on automatically after it has cooled down the user
5. the electrical system ground Have gain controls on amplifiers turned down during power up to prevent speaker damage if there are high signal levels at the inputs Do not connect the inputs outputs of amplifiers or consoles to any other voltage source such as a battery mains source or power supply regardless of whether the amplifier or console is turned on or off Power down amp disconnect units from mains voltage before making connections Do not use the unit near stoves heat registers radiators or other heat producing devices Do not operate equipment on a surface or in an environment which may distort the normal flow of air around the unit If the unit is used in an extremely dusty or smoky environment the unit should be periodically blown free of dust Do not remove the cover Removing the cover will expose you to potentially dangerous volt ages Do not drive the inputs with a signal level higher than that required to drive equipment to full output Do not run the output of any amplifier back into another input Do not ground the red output terminal never connect a red output terminal to another red output terminal In case of mal function this device should be serviced by qualified service personnel only CAUTION TO REDUCE THE MSA OF ELECTRIC HOCH GO WOT REMOVE COVER OF GACH Wi LISER SERWICEASLE PARTS SIDE SERWICING ORLY FOR QUALIFIED PERSONNE WWW APART AUDIO COM dDapr Introduction Dear custom
6. the typical dynamic character of music APC allows you to fully exploit the potential of the amplifier maintaining high power reserves and thus producing high clean power It is acommon misunderstanding that high power amplifiers will overload or destroy lower power speakers the opposite is true You can easily destroy a 500 Watt rated speaker with a simple 50 watt power amplifier Why In order to produce a low tone such as a kick drum or bass guitar you need about 80 or more of an amplifier s power Because distortion is less audible in low frequencies you would want to increase the level more than the amplifier can supply This causes low frequency distortion which causes high frequency harmonics These harmonics contain more high frequency energy than the high frequency speaker can deal with Result harsh distortion and sudden heat rise in the high frequency speaker s voice coil After a short while the high power speaker may burn out Conclusion don t punish your speakers with weak amplifiers Set the APC control to a power level equal to your speaker s RMS input power and avoid hitting the clip limiter WWW APART AUDIO COM dDPapr 3 Inputs and outputs Front panel layout 1 Signal led left channel this led lights up green when a sufficiently strong signal is present on the left channel after passing the input level control When it lights up red the power amp is overheated or in protect mode
7. and wait until the amplifier has cooled down Please note that in some cases such as DC on the output strong HF signals or short circuits the user must power off the amplifier Remove the error condition and power on again Under normal circumstances this amplifier will not overheat If any of the above mentioned overheating situations occur please check the load impedance the ventilation and last but not least input levels The intelligent APC circuitry will reduce input gain and level to a safe margin within certain limits This circuitry can not correct an input signal that is already clipped and distorted INFO APART AUDIO COM dDapt Rear panel layout EYEL m NTE ee ed a DDA DaD D GD AD O D DDD 1 Right speaker output on genuine Neutrik Speakon connectors Only pin 1 and 1 are used here 2 Right speaker cable binding posts these will also accept 4 mm banana plugs on 19 mm spacing 3 Left speaker cable binding posts these will also accept 4 mm banana plugs on 19 mm spacing 4 Left speaker output on genuine Neutrik Speakon connectors Warning left channel output is present on pins 1 and 1 right channel output is present on 2 and 2 For bridge mode applications you MUST use 1 bridge mode and 2 bridge mode OR use the red binding posts 5 Mains cable connector plug the mains cable connector here this socket also contains a mains fuse holder Replace this fuse o
8. ctor as a signal link connector 19 APC active led left channel this is a copy of the front panel APC led 20 Left channel input level control turn the level control to a level that guarantees distortion free music under all circumstances avoid clipping at the input at all costs 21 Bridge mode switch push this switch to convert the amplifier into a mono bridge amplifier In this case you can apply an input signal to the left channel only Leave the right channel connectors open Bridge mode input level is controlled by the left channel level controller 20 only Connect your speaker to the right channel plus connector and to the left channel plus connector Never use the speaker output minus connectors in bridge mode The led above the bridge mode switch will indicate that the amplifier is in bridge mode Minimum bridge mode speaker load is 8 ohms INFO APART AUDIO COM dDapt 4 Rack mounting and wirin Champ One can be mounted in a 19 rack taking up only 2 rack spaces Always allow a good airflow around the amplifier s front rear side top and bottom When installing in a rack with multiple audio devices it is advisable to leave one rack space between units Fill the empty rack spaces with meshed blind panels for improved ventilation Never mount the amplifier in a sealed cabinet unless adequate forced ventilation is provided The amplifier may not be able to meet the specifications when instal
9. er Why does live music leave an unforgettable impression on you The answer is simple dynamics The ability of a sound system to produce crystal clear low level sounds as well as extreme musical peaks without any distortion the power to leave some headroom for those occasional peaks in music Pure power This ease of music reproduction can not be described in figures or specifications In the following pages we will explain how we have reached our goal Champ One features an exceptionally dynamic output stage a unique combination of class G and H amplifier topology all packed in a two unit fanless enclosure While our competitors are struggling with often poorly designed so called energy efficient class D digital amplifiers well we have taken a close look and listened carefully to some of these designs and we were not impressed We got inspired to make something APart from all the rest and started from scratch Take a look at our new champion with his striking design and powerful set of features that will exceed the demands of passionate music lovers as well as system integrators Designed with a continuous 4 ohm 2 ohm dynamically stable high current output stage Champ One will surprise you with its sonic excellence and dynamic capacities Remember this unique amplifier has been developed with the impact of live music dynamics in mind A true beauty inside as well as outside but also a beast if necessary Take your time and l
10. gain to guarantee the preset program power output with musical dynamics 13 Tube solid sound selector set this switch to the tube setting for authentic tube like sound or to solid for normal applications The differences are very subtle and will only be noticeable on very high quality speaker systems Set this one to solid for normal applications 14 APC power control left channel turn the APC control to achieve the desired program output power The indicated power level is in reference to a 4 ohms speaker load This can also be used for environmental noise limiter purposes The APC circuitry will reduce the input stage gain to guarantee the preset program power output with musical dynamics 15 APC left channel on off switch always leave this switched on Warning turning off the APC circuit will also bypass the amplifier s output stage temperature protection This is for service purposes only 16 Left balanced input on XLR connector this connector is wired in parallel to connector 17 This allows you to link the balanced signal to another amplifier 17 Left balanced input on XLR connector this connector is wired in parallel to connector 16 This allows you to link the balanced signal to another amplifier 18 Left unbalanced input on cinch connectors use the top or bottom cinch connector to apply an unbalanced signal on the left channel These connectors are wired in parallel this means you can use the second conne
11. isten to our new Champ One amplifier Please fasten your seatbelts and beware you might get blown away not by the cooling fan simply because there isn t any Experience the pure musical power of Champ One Manual contents 1 Fanless design and highlights 2 Features 3 Inputs and outputs 4 Rack mounting and wiring 5 Standalone use 6 Technical specifications INFO APART AUDIO COM dDapr 1 Fanless design and highlights Audiophile grade components mounted on solid aluminum and steel construction chassis for the highest possible signal integrity and reliability even under difficult circumstances High current high voltage discrete output stage in class G and H configuration capable of driv ing even the most demanding speaker systems and combinations Either at low or high power you will hear the Champ One difference Switchable tube characteristic is a unique feature on discrete power amps It allows you to enjoy a warm softer more transparent sound resulting in zero listening fatigue Custom designed side mount heatsinks in combination with class G and H amplifier topology have made it possible to create a discrete high power amplifier without the need of a noisy dust collecting cooling fan inside the enclosure This means less maintenance no annual fan or dust filter exchange procedure no more amplifier cleanout no unwanted noise from cool ing fans Champ One relies on convectional cooling
12. led in a poorly ventilated environment Support the unit at the rear when installing in a rack Always remember excessive heat is one of your amplifier s biggest enemies When wiring an audio rack it is a good installation practice to route all AC wiring along one side of the rack and all audio wiring along the other side to avoid coupling mains cable interference into the audio path Please use only high quality signal and speaker cables and connectors Pay special attention to avoiding ground loops when installing audio devices in metal racks use special insulating rack mounting hardware such as the so called humfrees This mounting hardware will make sure that several devices mounted in a rack will be electrically isolated from the rack and thus are a great help in avoiding ground loops Any damage caused by user induced ground loops are not covered by warranty Ground loops can cause hum or other strange side effects that will affect stable and safe operation of audio hardware and peripheral devices Ground loops are often created by connecting tuners to cable distribution sockets Use a RF isolating transformer whenever there is a cable signal tuner or digital TV tuner in the audio path 12 WWW APART AUDIO COM dPapr 5 Standalone use It is possible to integrate Champ One in a high quality audio chain In order to adapt the front panel dimensions to the dimensions of other equipment it is possible to remove the
13. nly with a 6 3 AT 250V type Beneath the fuse holder you also find the ground lift switch 6 Right channel input level control turn the level control to a level that guarantees distortion free music under all circumstances avoid clipping at the input at all costs 7 APC active led right channel this is a copy of the front panel APC led 8 Right unbalanced input on cinch connectors use the top or bottom cinch connector to apply an unbalanced signal on the right channel These connectors are wired in parallel this means you can use the second connector as a signal link connector 9 Right balanced input on XLR connector this connector is wired in parallel to connector 10 This allows you to link the balanced signal to another amplifier 10 WWW APART AUDIO COM aDapr 10 Right balanced input on XLR connector this connector is wired in parallel to connector 9 This allows you to link the balanced signal to another amplifier 11 APC right channel on off switch always leave this switched on Warning turning off the APC circuit will also bypass the amplifier s output stage temperature protection This is for service purposes only 12 APC power control right channel turn the APC control to achieve the desired program output power The indicated power level is in reference to a 4 ohms speaker load This can also be used for environmental noise limiter purposes The APC circuitry will reduce the input stage
14. only a unique feature in this output power class Temperature controlled program power control the APC circuitry continuously monitors output power demands and amplifier temperature and will automatically adjust program power to avoid overheating and thermal cycling A stunning 46 000 uF of high grade electrolytic capacitors high power toroidal transformer for ultimate power reserve Self supporting low resonance steel subframe Torsion free front and side panel construction with integrated heatsink assembly Solid aluminum brushed front panel with removable 19 brackets and handles for use in a rack or as a Standalone unit in high quality audio systems Multi purpose input and output connector configuration genuine Neutrik speakon connectors speaker wire binding posts XLR input connectors RCA connectors WWW APART AUDIO COM ODapr 2 Features e Intelligent APC power management circuitry constantly analyses incoming music signals and keeps dynamics alive An additional ultra fast peak limiter avoids amplifier clipping in case someone hits the inputs too hard Please remember this is a musical amplifier please leave some headroom and enjoy the music e APC also allows you to configure the amplifier to your specific needs average RMS output power is programmable from 150 to 600 watts Under all circumstances dynamic headroom is respected as long as you don t overload the input stage This circuit can also be
15. rning off the APC circuit rear switch 11 will also turn off this protection feature and will void warranty 9 xr When both signal led 6 and temp led 9 are red it is possible that the power transformer s thermal protection is active and the amplifier is shut down Turn off the power and let it cool down The amplifier will not turn on automatically after it has cooled down the user MUST turn off power wait for cooling down and then power on again WWW APART AUDIO COM dDapr Led status messages Fault SGL led L Temp led L SGL led R Temp led R What to do Output signal condition red red red red condition Left amp Yes Reduce input limited output temp high signal power Right amp Yes Reduce input limited output temp high signal power es Left amp Yes Ye Reduce input output muted overheated signal wait for cool down Right amp Yes Yes Reduce input output muted overheated signal wait for cool down Amp error Yes Yes Remove error output muted L DC power off and HF short on circuit Amp error Yes Yes Remove error output muted R DC power off and HF short on circuit Transformer Yes Yes Yes Yes Wait for cool output muted thermal down power protection off and on In case the transformer is overheated it may take a few hours before the amplifier has cooled down sufficiently In such cases you may have overloaded the amplifier too much Power off the amplifier immediately correct the error
16. ually rewarded Send your ideas or suggestions to suggestions apart audio com Company names product names and names of formats etc are the trademarks or registered trademarks of their respective Owners 2008 APart Audio specifications subject to change without notice CHAMP ONE is developed by Audioprof nv Lanteernhofstraat 90 BE 2100 Deurne BELGIUM 16 WWW APART AUDIO COM
17. used as an environmental noise limiter e Output sound selection tube emulation circuitry for authentic sound from tube amplifiers Solid for normal use Try to find out and discover the subtle sonic differences e Bridge or stereo mode double the output power and convert this amplifier into a monoblock amplifier with one push on a button Minimum load impedance is 8 ohms in bridge mode e Protection circuitry the protection circuitry is another unique design feature of this amplifier together with the APC circuitry output signals are constantly monitored by the protection circuit and speaker outputs will be cut in case of extreme overload short circuits DC offset overheat ing This circuit is also capable within certain limits of reducing the input signal to prevent clipping distortion and other musically destructive situations We have done our best to make sure this amplifier will produce clean power but it is also the user who is responsible for the final result e Versatile in and output connector configuration for increased installation flexibility e User protected power and sound setting switches at the rear accessible behind a removable cover plate e Ground lift switch to enable you to find the cause of system ground loops INFO APART AUDIO COM dDapt What is APC APC is one of the most intelligent amplifier protection circuits ever designed simply because it does the job without interfering with
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