Audionet AMP II MAX User manual

audionet
amP II max
Mono -Amplifier
Owner'sManual

2
Owner's manual
TheAudionet-Teamwouldliketocongratulateyou topurchasingthe
AudionetAMPII MAX! YourAudionetAMPII MAX isdesignedfor
absolutelynaturalmusicreproduction athighestuser comfortembedding
totalsystemsecurity.
Pleasereadthismanualbefore firstusetomakesure thatyou are ableto
useall provided functions ofyournewamplifier.
Incaseofoccuringquestions pleasedo nothesitatetocontactyourlocal
Audionetdealer orourfactorydirectly.

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Setting up yoursystem
YourAudionetAMPII MAX havetheperfectdimensions tobeplaced
near yourspeakers. ButpositionedsidebysidebothAMPII MAX are 43
cmin width (standard width).
Do notcover thetop to preventtheamplifiers fromoverheating!
Pleaseconnectthepower jackattherear toyourwall outletusingthe
provided AudionetPower Cord (APC).
Thevoltagespecifiedattherear ofyour AMPII MAX mustmatchyour
mains specifications. TheAMPII MAX isaClass Iunit and has tobe
earthed.
Thecorrectpolarization ofthemains isimportantforreasons ofaudio
clarityand stability.Pleasemakesure thatthepinlabled"Phase"atyour
APC isconnectedtothe"hot"pinofyourwall outlet.TheAudionet
AMPII MAX indicatesawrongpolarization ofthemains lead. Ifyou
read:”Attention: Mains Phase incorrect”whenpowering
up, switch off theAMPII MAX and flip theplugin yourwall outlet.
Placing
Powerconnections
Mainsphase recognition

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Inputs and outputs
ForconnectingorremovinganyunitstheAMPII MAX mustbe
switched off.
Pleasemake surethatall cablesareinabsolutebestcondition. Broken
shields or short-cutloudspeakercablescoulddamageyour loudspeakers
or theamplifiers!
Atfirstpleaseconnectyourpre amplifier totheinputsofyourAMPII
MAX.Foraudio inputyou can usebalanced (XLR)as well as unbalanced
(cinch)cables. Forconnections longer than10 mwerecommend bal-
anced cables.
Pleasedon'tforgetto activatetheselected inputin thesetmenu.
Nowconnectyourspeakerstoonepairofthegoldplatedoutputjacks of
yourAMPII MAX. You mayusepure wires or"banana"plugs.
Check thepolarization ofthespeakers cables:
Usuallythespeaker jacks are labeled"+"and "-".You will find thesame
labelatyourAMPII MAX.
Wrong polarization will lead to severeloss ofsound quality!
Thespeaker impedance mustnotbeless than 4 W !
Though your AMPII MAX iseffectivelyprotectedagainstshorted
speakerjacksit has tobeswitchedoff whileworking on speakers and
speaker cables!
YourAudionetAMPII MAX supportsbi-wiringofloudspeakers. Con-
nectyourspeaker withtwoseparatecablestoeachAMPII MAX.Using
thebi-wiringmethod toconnectyourspeakerscanleadtoenhanced
sound quality.
Inputs
Speakers
Bi-Wiring

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Operating
Switchon yourAMPII MAX attherear side.Theswitchisabovethe
mains socket.After ashorttimetheline“Audionet”will appear inthe
display. NowyourAMPII MAX is in stand bymode.
Forswitchingon and off pleasepress the“power”button atthefrontof
theAMPII MAX.Themainswitchatthebackisonlytobeusedifyou
are absentforalonger timeand mustonlybeoperatedwhiletheAMPII
MAX is in stand bymode
Yourmono amplifiersAMPII MAX bothcanbeswitchedon remotely
byseveraldifferentways:
§ using"AudionetLink":You switchon oroff yourAMPII MAX with
yourAudionetpre amplifier PRE orPRE I
§ usingautomaticdetection ofan inputsignal: "Auto On/Off"
§ usingacountdown ofspecified time.
(Iftheunit isin stand bymode you enter thecorrespondingmenu by
pressingthebutton atthefrontforlonger than 2 seconds.)
Foraremotecontrolledswitchingon byyourAudionetpre amplifier two
simpleoptical"Toslink"cablesare necessary.Connecttheoutputlabeled
"audionetlink"atyourpre amplifier withthe"audionetlink"inputofthe
firstAMPII MAX.Thenconnectthe"audionetlink"outputwiththesec-
ond opticalcableto the"audionet link"inputofthesecond AMPII MAX.
TheAMPII MAX isequippedwithamulti-stageinputsignaldetection
circuit.Ifaninputsignalappearsattheinput(XLRorcinch)crossingthe
user definablethresholdyourAMPII MAX will switchon automatically.
DuetostereosignalsismayoccurthatbothAMPII MAX will switchon
atdifferentpoints oftime.
Theamplifierswill function asusual.Of course,you are still ableto
switch on and off theunits manually.
Switching on
Remotepoweron
AudionetLink
AutoOn/Off

6
Automaticshutdownwill happenwhenno inputsignalisdetectedfora
user definabletime(30 seconds up to 2 hours).
To activateand setup this feature pleaserefer to chapter "Programming".
Duetosecurityconcerns the"Auto-On"featurewill onlybeavailible
after firstmanualswitching on!
Whileyou are absentyourAMPII MAX canswitch on automaticallyand
will bepre-heatedforusewhenyou getback. To activatethisfeature
pleaseusea long keypress on the"power"button atthefront. Thedisplay
changestoshowthecountdowntimer.Acursorwill markthenumber to
bechanged. A long keypress will movethecursoronesteptotheright.
Usinga short keypress, you canchangethedesirednumber.Hourscan
beprogrammedinsteps ofonehour.Minutescanbeprogrammedin
steps of15 min. Thefollowingdiagramexplains thepossiblecountdown
timer settings:
01 hour 15 min 01hour 15 min 01 hour 15 min
11 hours 15 min 02hours 15 min 01 hour 30 min
91 hours 15 min 00hours 15 min 01 hour 00 min
10-hours-setting 1-hour-setting Min-setting
Legend:longkeypress shortkeypress
Activatecountdownbyleavingthetimer settingmenu witha long key
press. Itwill beactivatedautomaticallyifyou do notchangeanysetting
forlonger than 10 seconds.
Ifyou wanttousethecountdowntimer againit isactivatedbyasingle
keypress. Press the"power"button formore than2seconds and wait.
After 10 seconds theprevious setup countdown will startagain.
To deactivateusea short keypress atanytime.
"Warm Up" Countdown

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Protection system
YourAudionetAMPII MAX and yourloudspeakersare protectedbya
complexprotection circuitry.Thedisplaywill reportinclear everyde-
tected error:
§ Overload:Shorted loudspeaker cables ordefectiveloudspeaker.
§ Temp Failure:Do notcover theventilation slots.
§ HF-Failure:High frequencyoscillation, e.g. defectivepre amplifier.
§ DC-Failure:ThelevelofDCvoltageattheoutputis too high.

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Programming
Excepttheprevious describedfeature ofcountdowntimer controlled
automaticpower on yourAMPII MAX canbesetup toyourpreferences
bymenu selections. Thesettingswill lastafter switchingoff theAMPII
MAX.Changingsettingshastobedonewhiletheamplifier isswitched
on and in operating mode.
Listofsettings to beadjusted to yourpreferences:
· Brightness ofdisplay(default: 50%brightness).
· Displaymode:Selected input, temperature, peak-levelmeter.
· Inputselection:Cinch orbalanced (XLR)input.
· Auto-On:Thresholdforlevelcontrolledautomaticpower on (see
above).
· Auto-Off:Timeto automaticpower down (see above).
· Choosebetween two texts to bedisplayed in stand bymode.
To changesettingsuseshortorlongkeypresseson the"power"button at
thefrontoftheAMPII MAX. Switchon your AMPII MAX and holdthe
button pressed foratleast2 seconds to enter themenu.
Forfurther operatingpleaseconsult thegraphicbelow.Alongkeypress
will enter amenu orsub-menu. Useshortkeypressestomovealongthe
menu options.
To savethechangedsettingsusealongkeypress orwait foratleast10
seconds. Forfurther changestothesettingsre-enter themenu asde-
scribed above.
Overview
Operating

9
Operating
SET DIM 100%
80%
50%
25%
Select displaybrightness
(4 steps) *)
SET DISPLAY STANDARD Standard display
TEMPERATURE Temperaturedisplay
PEAK-LEVEL Peaklevel meter
SET INPUT CINCH Select cinchinput
BALANCED (XLR) Select balanced(XLR) input
SET AUTO ON NEVER ON Never power onautomatically
FAST ON High sensitivity
MEDIUM ON Mediumsensitivity
SLOW ON Maximumrudgeness
SET AUTO OFF NEVER OFF Never power off automatically
OFF IN 30 SECS
OFF IN 5 MIN
OFF IN 15 MIN
OFF IN 60 MIN
OFF IN 120 MIN
Whenthemusic stopswait
for thespecifiedtimeuntil
automatic power down
SET OFF TEXT AUDIONET
Select texttobedisplayedin
standbymode
EXIT...
Legend:longkeypress shortkeypress
*) WARNING:
Longtermusageofthedisplaysettomaximumbrightness (setting
100%) maycauseextendedsigns ofwear resultinginadecayofcon-
trastorbrightness ofindividualdotsinthedisplay.Donotusethedis-
playwithabrightness sethigher thanthefactorydefault settingof
50%over alonger period oftime

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Technical information
TheAMPII MAX isdesignedasadual-mono amplifier.SMDtech-
niquesare usedtooptimizehigh-frequencycharacteristics. All signal
paths are reducedtominimumlength. No'evil'elements(likecoupling
capacitors, coils, relays)are locatedinthesignalpath. Thedesignismag-
neticallyand capacitivelyoptimized. Negativemagneticand electricin-
fluence and interaction betweeninput,decouplingand power section are
reduced to aresidualminimum.
Control,decouplingand power sections haveseparatedtransformersand
rectifiers. Twomaintransformers(eachwith1100 VA) drivefourSie-
mens electrolytecapacitors (33.000mFeach)bySchottkydiodes.
Fortheinputsection Audionetusesalow-noise,monolithicdualFET.
Thegain-bandwidthproductofthesucceedingdual-stagedifferential
voltageamplifier exceeds 1 GHz. Inputand outputsections are decoupled
using'bootstrapped'emitter followers. Theoutputsection isequipped
with power MOS-FETs.
Inorder todeterminetheimpulsepeakleveltheAMPII MAX detectsa
voltagemaximumand measures thecurrentflowingatthatpointoftime.
Bythat,impedance criticalloudspeakersare processedautomaticallyand
accordingtothatahigher peaklevelisdisplayed. You will gettheexact
effectivepower.Ifno loudspeaker isconnected, onlyasmall measuring
errorisdisplayed(e.g.3.0Winsteadof200Wfora4W-loudspeaker).The
currentnumber isdisplayedforabout2seconds ifnotreplacedbya
higher peak level.
Construction
Powersupply
Circuitry
Peak level meter

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Securityadvice
¨ Avoid packaging material,especiallyplasticbags,to get
into children’shands.
¨ Store and operatetheunit in adryroomatareasonable
roomtemperature.
¨ Avoid moisture oranyliquid to getinto theunit.
¨ Setup theunit in afree position so thattheairis allowedto
flowthrough theunit slits.
¨ Donotcover, e.g. with ablanket.
¨ Donotopen thecase.Unauthorisedopening will cause
loss ofguarantee.
¨ Useadrycloth forcleaning.

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Technical data
TypeMicroprocessor controlledpower amplifier
Power400 Watt in8W
700 Watt in4W
1100 Watt in2W
Bridgedoperations2000 Watt in8W, twoAMPII MAXper channel
Frequencyresponse0-300.000Hz (-3dB)
Damping factor > 1.800 at 10kHz, (8W)
> 10.000 at 100Hz, (8W)
Intermodulation< 110dB SMPTE (100Hz:200kHz, 4:1), 50W/4W
THD < -100dB for 20Hz..20kHz, 35W/2W
k2typ. -117dB, k3typ. -127dB, at 25W/4W
Noise> 112dB (A) at 10Veff
> 124dB dynamic at maximuminput
InputsCinch, WBT:37kW, 220pF
XLR, Neutrik:3kW, 170pF
Output2pair ofgoldplatedWBTterminals
Mains220..240 Volt /50..60 Hz
5W Stand-By, 100W typ., 2000W max.
Dimensions215mm x285mm x500mm (WxHxD)
Weight38kg
Finishfront: brushedAluminum, 10mm
(Frontplate in“alunature” or blackavailable)
Button:chromeor black
Top:brushedAluminumplates, blackelox
Chassis:Steel, black
Engineered and produced by:
Idektron GmbH&Co. KG, HernerStr. 299, Gebäude 6, 44809 Bochum
www.audionet.de
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