User`s manual
Contents
1. DC Volta E h gt defective pre amplifier or source unit PreVolt Positive malfunction in power supply service required PreVolt Negative malfunction in power supply service required Power Failure temporary breakdown of mains Discharging j PAA Mal funetion internal malfunction during discharging service required Even after powering down the MAX the error message will still be in the display Press the power key on the front panel to reset the display to indicating the stand by mode A Important e Remove cause of error prior to switching on the MAX again 17 8 Setup menu Beyond the feature of the Warm Up Countdown you can adjust the MAX to your preferences using the setup menu List of settings to be adjusted according to your preferences e Brightness of display Set Dim Level e Input selection balanced XLR or Cinch Set Input e Auto On function threshold for automatic power on Set Auto On e Auto Off function time to automatic power down Set Auto Off e AutoStart function automatic start for timer control Set AutoStart Press the power key on the front panel longer than 2 seconds long keystroke to enter the setup menu Use a short keystroke less than 2 seconds to navigate to the next menu item Select a menu item with a long keystroke Now you can select your de sired option with short keystrokes To leave a menu item hold down the power key longer than 2 seconds o2. Display AUdiONET power power key 3 Overview connections 3 1 Back panel INPUT BALANCED SPEAKER OUTPUT BI WIRED S Y Audionet LINK AUdiONET AMP ULTRA LINEAR POWER AMPLIFIER MADE IN GERMANY IDEKTRON GMBH amp CO KG BOCHUM GERMANY 220 240V C 100W typ 50 60Hz 1000W max THIS UNIT MUST BE EARTHED CAUTION TO PREVENT ELECTRIC SHOCK DO NOT REMOVE SCREWS NO USER SEVICABLE PARTS INSIDE REFER SERVICING TO AUTHORIZED PERSONS A Y N m speakers output 1 balanced XLR input Cinch input Speakers output 2 0 A aAa Audionet Link input Audionet Link output marking mains phase mains input mains switch 4 Installation and power supply A Important e For connecting or removing loudspeakers and or the pre ampli fier your MAX must be switched off to prevent damage to the amplifier or the connected units e Please make sure that all cables are in absolute best conditions Broken shields or short cut loudspeaker cables could damage speakers and or amplifiers 4 1 Placement Your Audionet MAX has the perfect format for placing it right beside your speakers Alternatively two Audionet MA
3. Set Diml evel iss eee e EE ee OR Ee ve Ee ee eg 20 SEL Input ze 21 Set AUO Ons EE ESE Ee DE Pe Ee ER Ee GE GR ee 21 Set AU OT RE OS RS ES EE OE il De ee 22 Overview factory defaults oooonnccninccioccnococonoconoconoconoconocnnnonononoos 23 Technical information see esse esse esse es see see Bee Bee Ge Ge Ge Ge ee es se 24 BERE EE ln ER eases 24 Ciclos sai ee SE er ek 24 Power supply esse esse AR GR Ge Ge ee Re Re RA GRA RA ee Re ee Re ee 24 Hand lim Gis Ee EE ER N RE ihe ned a Ge EE Gee A ees 24 Security adViCe es esse esse es sae ee oe ee EG BEG EG EE Ge EE BE GE GO Ee ee 25 Technical data sees see ssee esse ese ee ee Ee Ee Ee See See Bee BRA See See Sea 26 1 Preface The Audionet Team congratulates you on your purchase of this unit But before you start listening to your new Audionet MAX please read this manual carefully so you are able to use and enjoy all functions of this unit without drawback on music quality 1 1 Included Included you will find the following items the mono power amplifier MAX the user s manual that you are currently reading one standard mains cord 1 2 Transport A Important Please transport the MAX only in the included package Always use the plastic bag to prevent scratches on the housing Please allow the MAX to adapt to the climatic conditions in your listening room before you switch on the unit for the first time after transport 2 Overview control elements 2 1 Front panel
4. 30 min 91 hours 15 min 00 hours 15 min 01 hour 00 min 10 hours setting 1 hour setting minutes setting long keystroke short keystroke Activate the countdown timer by leaving the timer setup menu with a long keystroke Alternatively the countdown is started automatically if you do not change any setting for longer than 12 seconds Note e While the countdown is running the display shows the remaining time until automatic start up WARM UP IN 02 hours 43 min e If the display saver is active the display shows the remaining count down time abbreviated e g 02 43 Please refer to section Set Dim Level on page 20 for detailed information on the display saver If you would like to use the countdown timer again simply activate it by a long keystroke While in stand by mode press the power key longer than 2 seconds and wait After 12 seconds the countdown will start again with the previous programmed time To de activate a running countdown just press the power key for less than 2 seconds at any time 16 7 Protection system Your Audionet MAX and your loudspeakers are protected by a complex protection circuitry In case of a malfunction the display informs the user about the nature of the detected error in plain text Error message Possible cause Overload short circuit or defective speaker Overheating ventilation slots covered High Frequency defective pre amplifier exceeding DC level at the output
5. AUdIONET MAX Ultra Linear Power Amplifier User s Manual 1 1 1 2 4 1 4 2 4 3 5 1 5 2 5 3 5 4 6 1 6 2 6 3 6 4 6 5 6 6 6 7 8 1 8 2 8 3 8 4 Contents AS E IS 5 cl di AAA A A 6 LO e 6 Overview control elements sesse esse esse ese ese See See Bee Ge Ge Gee 7 Front Panel SEE A A ee ed 7 Overview connecti0nS ees sees sesse esse ese ese See See BRA BRA Ge Ge Ge es se 8 Back panel EE GR ida Ge GR ek cock GE ge ee 8 Installation and power supply ssees esse esse esse ee ee Ee SEGE Ee GE Ge ee 9 Plac inefits ree EE ea e ee lesan 9 Mains COME 9 Orientation of mains Plug see ee ee ae Re RA RA RA RA Re 10 Inputs and OUtDU S esse sesse es soe esse oe ee Ee BEG EG EE Ge EE Ge EE EG ES 11 hele RE N IE EE N EE EA 11 Speaker terminals as se EE dt ease sede Ee GEE RS de EA ese 11 Bi ld RE RE EE EE ieee 12 Aud One Lk aaa ee seed 12 8 yo ETTER EE EE EE 13 Powering UP ee ee ee ee ee Re Re RA a i ee Re ee Re ee 13 Switching on off anrea e a GRA RA GR GR Re ee ee 13 Mains phase detection ee ee ae Re RA RA RA RA RA RR Re 14 Using Audionet Link ee ee ee Re Re RA RA RA RA Re 14 AutoStart fUNction sesir Ge se AA ee Be AA Ge Se AA Ge de 15 Auto On Off funcHON ese ee se ee RA ee AA Ge ee AR ek ee ge 15 Warm Up CountdoWN cooococononcnnonononanonnonnncnnncnnncnn nono nono nononocinonos 15 Protection SYSteM ccccsccsccsccccccscesccecssscecsccsesccesssseecssssescess 17 AS AAA Oe Oe Oe RE nioe 18
6. Circuitry The input stage is designed as a double differential amplifier with a low noise monolithic double FET It is powered separately by a 80 VA toroid core transformer The gain bandwidth product of the input stage is greater than 1 GHz Double boot strapping decouples the input from the power stage The power stage consists of eight Power MOSFETS The bias current is controlled actively A complex correction circuit locally compensates distortion in real time 9 3 Power supply The control input and power stage circuits have separate power supplies with separate transformers and rectifiers Two encapsulated main trans formers with 1 000 VA each drive Schottky rectifier diodes supplying four fast and impulse stable high current capacitors with a total capacity of 156 000 uF The power supply voltages are smoothed by discrete and optimized MOSFET regulators 9 4 Handling The microprocessor controls all functions and constantly monitors DC level high frequency temperature and overload and switches off the MAX from mains in case an error is detected The display issues error messages in plain text Automatic power on off is provided by the Audionet Link interface the AutoStart and Auto On Off function the latter depending on a user selectable threshold of the input signal User configurable inputs are switched by gold plated high precision relays 24 10 Security advice A Important e Avoid packaging material especially plast
7. X sitting side by side have exactly the standard width of 43 cm It is recommended to place the MAX into a high quality rack or onto a stable table A Important e Please find a place for your Audionet MAX that is sufficiently venti lated to allow the heat to dissipate e Do not expose the unit to direct sunlight e Do not place the MAX in close range to heat sources like radiators e Do not cover the ventilation slots of the unit 4 2 Mains connection The mains input 8 is on the back panel of the MAX To connect the unit to mains use the included mains cord If you prefer to use a different power cord make sure that it meets the specifications for your home country A Important e The electrical specifications of your home country must meet the electrical specifications printed onto the back panel see numbers in section Back panel on page 8 e The MAX is a Class I unit and must be earthed Please ensure a sta ble earth connection Phase hot pin is marked on the back panel PHASE 7 e If you connect the mains cord please make sure that mains switch 9 at the back panel is switched off e Never pull the mains plug while the MAX is switched on Before you pull the mains cord off its socket 8 at the back panel power down the unit to stand by mode and switch off the unit using mains switch 9 Only in cases of extended absence like va
8. You can use both a Cinch or a balanced XLR cable For cable lengths exceeding 10 m we recommend the use of balanced cables Note e Don t forget to activate the input you are using in the setup menu see section Set Input on page 21 5 2 Speaker terminals Now connect your speakers to the gold plated terminals on the back panel of the MAX You can use both banana plugs or spades as well as simple cable ends The MAX features two electrically identical speaker termi nals 1 and 4 which you may use alternatively In case you would like to bi wire your speakers please refer to section Bi Wiring on page 12 Note e Look out for the correct connection of your speaker cables Usually the terminals of your speakers are marked and The MAX uses the same marks e Wrong speaker polarization will result in severe loss of sound quality 11 A Important e Although the MAX has an effective protection system to prevent damage to the circuits switch off the unit while working on the speaker and or audio cables e The nominal loudspeaker impedance should be 2 Ohms or higher e Never use force or tools tightening the terminal screws 5 3 Bi Wiring If your speakers support bi wiring use two separate cables to connect each speaker to the output terminals 1 and 4 of the MAX Impulse response and spatiality may improve significantly Note e Again please mind the correct po
9. cations or if massive trouble on the mains power is to be expected you should switch off the MAX from the mains using mains switch 9 To disconnect the unit completely from mains pull the mains plug Tip e Using high quality mains cords may improve the sound quality Please consult your local Audionet dealer 4 3 Orientation of mains plug The correct polarization of mains is important for reasons of audio clarity and stability Please connect the mains cord so that the hot pin of the wall outlet is connected to the pin of the mains input 8 marked PHASE 7 Note e Your Audionet MAX is able to detect a wrong polarization of the mains plug during start up If the message Attention Mains Phase incorrect appears in the display when you switch on the unit from stand by mode using the power key switch off the MAX completely and flip the mains plug in the wall outlet see section Mains phase detection on page 14 5 Inputs and outputs A Important e For connecting or removing loudspeakers and or the pre ampli fier your MAX must be switched off to prevent damage to the amplifier or the connected units e Please make sure that all cables are in absolute best conditions Broken shields or short cut loudspeaker cables could damage speakers and or amplifiers 5 1 Inputs At first connect your pre amplifier alternatively to inputs 2 or 3 of the MAX
10. eutrik XLR balanced gold plated 1 Audionet Link optical 2 pairs of Furutech speaker terminals Rhodium for comfortable Bi Wiring 1 Audionet Link optical 230 V 50 60 Hz Stand by lt 1 W Auto On aktiv lt 4W Warm Up Timer aktiv lt 5 W 100 W typ max 2000 W Power consumption 26 Front brushed aluminium 10 mm black anodized light grey print or aluminium nature anodized black print Finish Display red or blue Top aluminium black anodized 6 mm Sides aluminium black anodized 4 mm Chassis steel black coated 2 mm Audionet ULA technology magnetically and capacitively optimized design shortest signal paths no capacitors in the signal path completely DC coupled separate power supplies for input and power stages two encapsulated torroid transformers with 1 000 VA each four special smoothing capacitors with an overall capacity of 156 000 uF big two line vacuum fluorescent display Features remote power up down via Audionet Link or input signal 3 sensitivity settings timer function microprocessor monitored protection circuit protection circuitry detecting HF DC overheat ing and overload automatic mains phase recognition display saver Errors and omissions excepted Specifications and design are subject to changes without prior notice 27 AUCIONET is a trademark of Idektron GmbH amp Co KG Engineered and produced by Idektron G
11. ic bags coming into chil dren s hands e Store and operate the unit in a dry room at a reasonable room tem perature only e Avoid moisture any liquids dirt or small objects getting into the unit e Set up the unit in a sufficiently ventilated environment e Do not cover the unit e Do not open the unit Unauthorised opening will void warranty e Do not short circuit the outputs e During connecting or removing loudspeakers and or the pre amplifier your MAX must be switched off to prevent damage to the amplifier or the connected units e Use dry cloth for cleaning We would like to wish you many exciting listening experiences with your new Audionet product If you still have any questions do not hesitate to ask your competent Audionet dealer or contact us directly 25 11 Technical data Function Microprocessor controlled mono power amplifier 400 Watts in 8 Ohms 700 Watts in 4 Ohms 1 100 Watts in 2 Ohms Frequency response 0 500 000 Hz 3dB gt 1 800 10 kHz gt 10 000 100 Hz Intermodulation lt 110 dB SMPTE 100 Hz 20 kHz 4 1 50 W 4 Ohms lt 106 dB 1 kHz 25 Watts 4 Ohms lt 106 dB 1 kHz 700 Watts 4 Ohms Bandwidth 20 Hz to 20 kHz Noi Ee k2 typ 117 dB for 25 Watts in 4 Ohms HOPE K3 typ 123 dB for 25 Watts in 4 Ohms SNR gt 125 dB coaxial 37 kOhm 100 pF balanced 3 kOhm 100pF Damping factor Input impedance 1 Furutech Cinch line gold plated Inputs 1 N
12. is connected to an Audionet pre amplifier via Audionet Link use the remote control of the pre amplifier to automatically switch on off the MAX and all other Audionet units also connected via Audio net Link For setting up the necessary connections please refer to section Audionet Link on page 12 Note Oo The switch on signal is issued to any further Audionet units daisy chained to the Audionet Link output of your MAX with a little delay to avoid all units switching on at the same moment which could cause an overload of your mains fuse e Independently from the Audionet Link interface you can switch on off your MAX at any time by using the power key on the front panel 6 5 AutoStart function If the AutoStart function is active the MAX starts up automatically to normal operating mode right after the unit is connected to mains power e g by operating the mains switch 9 on the back panel Use this option to start up the MAX automatically using a timer device For further de tails please refer to section Set AutoStart on page 22 6 6 Auto On Off function Your Audionet MAX is equipped with a multi stage input signal detec tion circuit Auto On function If an input signal is detected at the input Cinch or balanced XLR crossing the user selectable threshold the MAX will switch on automatically For further details please refer to section Set Auto On on page 21 Note Oo Due to secur
13. ity concerns the Auto On function will only be available after first manual switching on e Because of the nature of stereo or multi channel signals it may occur that the MAX in your setup will switch on at a different point of time according to each input signal e Operate the MAX as usual Of course you are still able to switch on off the unit manually The MAX will shut down automatically Auto Off function when no input signal is detected for a user selectable time 30 seconds up to 2 hours To activate and setup this feature please refer to section Set Auto On on page 21 6 7 Warm Up Countdown While you are absent the MAX can switch on automatically after a prese lected time 15 minutes up to 99 hours and 45 minutes and is then pre heated and ready for a listening session when you get back To setup the countdown clock press the power key on the front panel longer than 2 seconds long keystroke while the MAX is in stand by mode The display shows WARM UP IN 01 hour 15 min The cursor marks the digit of the countdown time to edit A long key stroke moves the cursor one digit to the right 15 Use short keystrokes press key less than 2 seconds on the power key to set the desired digit Hours can be programmed in steps of 1 hour minutes in steps of 15 min The following diagram explains the possible countdown timer settings 01 hour 15 min 01 hour 15 min 01 hour 15 min 11 hours 15 min 02 hours 15 min 01 hour
14. larization of the speakers 5 4 Audionet Link For your convenience the MAX can be controlled remotely by one of Audionet s multi channel pre amplifiers e g MAP or MAP 1 as well as one of Audionet s stereo pre amplifiers e g PRE PRE G2 PRE 1 or PRE 1 G3 using the Audionet Link interface You only need a simple optical Toslink cable to connect the Audionet Link output of your Audionet pre amplifier to the Audionet Link input IN 5 of the MAX In case you would like to automatically switch on off further Audionet units in your system e g a second MAX using the Audionet Link inter face please connect the Audionet Link output OUT 6 of your MAX to the Audionet Link input of the next Audionet unit e g power amplifier tuner CD player etc using a simple Toslink cable Note J The switch on signal is issued to any further Audionet units daisy chained to the Audionet Link output of your MAX with a little delay to avoid all units switching on at the same moment which could cause an overload of your mains fuse e Please read section Using Audionet Link on page 14 Also consult the user s manuals of your Audionet components connected via Audionet Link for further information 6 Operating 6 1 Powering up First of all please make sure your MAX is connected correctly to your pre amplifier speakers and mains see section Installation and power supply on page 9 a
15. m sensitivity Lowest sensitivity Never power off automatically When music stops wait se lected amount of time before automatic power down AutoStart function disabled AutoStart function active Exit setup menu short keystroke 19 8 1 Set Dim Level Select the brightness of the display on the front panel Five settings are available 100 75 50 25 and OFF A Important Long term usage of the display set to maximum brightness set ting 100 may cause extended signs of wear resulting in a decay of contrast or brightness of individual dots in the display Do not use the display with a brightness set higher than the factory de fault of 50 over a longer period of time Note Oo Is the brightness set to O the display is only on during setup ad justments powering up down and while displaying an error message It switches off automatically several seconds after the last user entry The MAX activates the Display saver automatically after 10 minutes without a user entry While the display saver is active in normal operating mode the dis play shows the selected input channel or the temperature depending on the selected display mode Set Display in the abbreviated form Line XLR In The display brightness is automatically reduced to 25 and the location of the information text will change randomly every 12 seconds to prevent any burn in effect of the display The display saver is de activated and
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17. nd section Inputs and outputs on page 11 The MAX is a stand by unit Please operate the mains switch 9 on the back panel The display shows for a brief moment a welcome message After that the MAX is in stand by mode Only in cases of extended absence like vacations or if massive trouble on the mains power is to be expected it is recommended to disconnect the MAX from mains Operate the mains switch 9 on the back panel to switch off the unit from mains The display will go dark A Important e Never pull the mains cord while the MAX is switched on Before you operate the mains switch 9 on the back panel or pull the mains plug power down the unit to stand by mode first 6 2 Switching on off To power up the MAX from stand by mode press the power key on the front panel The MAX issues the message Waking up In case the mains plug has the incorrect polarization a warning will appear in the display see section Mains phase detection on page 14 After that the unit notifies the user of the currently selected input Now the MAX is in normal operating mode If you would like to switch off the unit please press the power key on the front panel The display shows the message Going to sleep which then will be replaced after a short moment by DISCHARGING NOW please wait until the power supply of the MAX is discharged completely The unit is now in stand by mode Note e During p
18. nect the MAX to mains power the unit will start up to stand by mode To activate the MAX use the power key on the front panel the Audionet Link interface or the Auto On function The AutoStart function is active As soon as the MAX is connected to mains power the unit will start up to normal operating mode automatically Use this setting to control the MAX using a timer device e In order to use the AutoStart function with a timer device the mains switch 9 on the back panel has to be in position on all the time The connection to mains is switched by the timer device in this case 22 8 6 Overview factory defaults SET DIM LEVEL 50 SET INPUT Line Cinch SET AUTO ON never on SET AUTO OFF never off SET AUTOSTART disabled Note e The Warm Up countdown is preset by default to 1 hour and 15 min but de activated see section Warm Up Countdown on page 15 23 9 Technical information 9 1 Design To optimize the high frequency properties the circuitry was consequently miniaturized and SMD technology implemented Signal path ways are limited to a minimum length and contain no components harmful to the quality of sound like coupling capacitors coils or relays The construc tion is optimized magnetically and capacitively Influences of interfer ence and interaction between amplifier stages are extensively ruled out The signal cables are made of pure silver and gold metallurgy 9 2
19. or multi channel signals it may occur that the MAX in your setup will switch on at a different point of time according to each input signal e Operate the MAX as usual Of course you still be able to switch on off the unit manually 21 8 4 Set Auto Off The MAX will power down automatically Auto Off function when no input signal is detected for a user selectable amount of time Select the desired time to shut down never off off in 30 secs off in 5 min Off in 15 min off in 60 min off in 120 min Select this option if you would like to de activate the Auto Off function The MAX will not shut down automatically if no signal is detected You have to power down the unit to stand by mode manually If no input signal is detected for 30 seconds the MAX will shut down automatically After 5 minutes without an input signal the MAX will shut down After 15 minutes without an input signal the MAX will shut down After 1 hour without an input signal the MAX will shut down After 2 hours without an input signal the MAX will shut down 8 5 Set AutoStart If the AutoStart function is active the MAX starts up automatically to normal operating mode right after the unit is connected to mains power e g by operating the mains switch 9 on the back panel Use this option to start up the MAX automatically using a timer device disabled active Tip The AutoStart function is de activated If you con
20. owering down you may re start the MAX by pressing the power key on the front panel The display shows the message RE STARTING 13 6 3 Mains phase detection The correct polarization of mains is important for reasons of audio clarity and stability Please connect the mains cord that the hot pin of the wall outlet is connected to the pin marked PHASE 7 of the mains input 8 on the back panel The MAX recognizes the incorrect polarization of the mains plug automatically Right after switching on the unit from stand by mode by pressing the power key on the front panel the following mes sage appears in the display in case the mains polarization is incorrect Attention Mains Phase incorrect If you read the above message power down the unit by pressing the power key Please wait until the display no longer reads DISCHARGING NOW please wait Disconnect the MAX from mains by operating the mains switch 9 Now pull the mains plug and re insert it into the mains socket rotated by 180 If you switch on the unit again the warning should not appear now A Important e If the MAX issues the mains polarization warning or no warning at all for both positions of the mains plug check the connection to earth of your mains socket and mains cord You have to ensure a stable connection to earth for the mains phase detection of the MAX to work correctly 6 4 Using Audionet Link If your MAX
21. r simply wait longer than 12 seconds If you would like to change more settings please re enter the setup menu While you are in the main menu get back to normal operating mode by waiting longer than 12 seconds or navigate to menu item Exit and select it yr Note e In case you stop editing any user setting the MAX will leave the setup menu automatically after 12 seconds and returns to normal op erating mode e While you are in the setup menu the display brightness is adjusted to 100 for better readability Leaving the setup menu resets the dis play brightness to the user selected level automatically e If you power down the unit to stand by mode all user settings are stored automatically in the non volatile memory of the unit Even af ter disconnecting from mains the MAX will still remember your set tings The following diagram gives an overview of the structure of the setup menu The subsequent sections explain all options of the setup menu in detail Active Set Dim e Set Input HE Set Auto e Set Auto E Set AutoStart Pale CT Exit long keystroke 100 75 50 25 OFF Line Cinch Balanced XLR never on fast on medium on slow on never off off in 30 secs off in 5 min off in 15 min off in 60 min off in 120 min disabled active Select display brightness 5 steps Select Cinch input Select balanced XLR input Never power on automatically High sensitivity Mediu
22. the display returns to its nor mal mode as soon as any user entry is detected The user cannot switch off the automatic display saver function 20 8 2 Set Input Select the input you connected your pre amplifier to Line Cinch Select this option if you connected your pre ampli fier to the Cinch input 3 of the MAX Balanced XLR Select this option if you connected your pre ampli fier to the balanced XLR input 2 of the MAX Tip Pinning of the balanced XLR input 1 Ground 3 Negative 2 Positive The pins are marked with the same number as in the diagram above 8 3 Set Auto On Your Audionet MAX is equipped with an input signal detector Auto On function If the signal at the selected input Cinch or balanced XLR crossed the user selectable threshold the MAX will power up automati cally Select the threshold level you need never on Select this option if you would like to de activate the Auto On function The MAX will not power up automatically fast on If you select this option the threshold is low Even small signals will power up the MAX automatically medium on Moderate sensitivity for regular signal levels slow on High threshold The MAX starts up automatically only when detecting input signals of higher level Note Oo Due to security concerns the Auto On function will only be available after first manual switching on e Because of the nature of stereo
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