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mi niDSP Ltd, Hong Kong 

www.minidsp.com

 / Features and speci fi cations subject to change wi thout pri or noti ce

 

52 

(The version number “105” may be different.) 

You can see in the above list the name of the firmware file, pwr-ice2_v3_2.hex (the version number “v3_2” may 
change). Now type the following sequence of commands. Instead of “192.168.1.15”  type the number revealed in 
the instructions above, and be sure also to type the correct firmware file name: 

C:\Users\...\firmware> 

tftp 192.168.1.15 put pwr-ice2_v3_2.hex

 

Transfer successful, 2765400 bytes in 12 second(s), 23045 bytes/s 

C:\Users\...\firmware>

 

While the firmware is downloading, the orange LED of the Ethernet jack will light. The download should take 
about ten to twenty seconds. 

Power off the amplifier, wait a few seconds, and then power it on again. You can n ow proceed to use it as 
normal. 

6.3.3

 

Mac 

To load firmware using Mac OS X requires that you use the Terminal program (located in the 
Applications/Utilities folder). In the examples that follow, black text is the “prompt” printed by Terminal, blue 
text is text typed in by you, and red text is the program output. 

It is important that you type exactly as shown including characters like “.” and “/” where noted. Press 
the Tab key after typing the first two characters of any filename, to activate auto-completion. 

Assuming that the unzipped download is in the Downloads folder on your Mac, you can type: 

mac:~ me$

 cd Downloads/PWR_ICE2_2x2_105/firmware/

 

mac:firmware me $ 

ls 

 

PWR-ICE2_firmware_update_procedure.pdf  
pwr-ice2_v3_2.hex 

mac: firmware me $  

(The version number “105” may be different.) 

You can see in the above list the name of the firmware file, pwr-ice2_v3_2.hex (the version number “v3_2” may 
change). Now type the following sequence of commands. Instead of “192.168.1.15”  type the number revealed in 
the generic instructions above, and be sure also to type the correct firmware file name: 

mac:firmware me$ 

tftp 192.168.1.15

 

binary

  

rexmt 1 

 

timeout 60 

 

put pwr-ice2_v3_2.hex 

 

Sent 276540 bytes in 15.8 seconds  

quit 

 

mac:firmware $ 

 

While the firmware is downloading, the orange LED of the Ethernet jack will light. The download should take 
about ten to twenty seconds. 

Power off the amplifier, wait a few seconds, and then power it on again. You can now proceed to use it as 
normal. 

Summary of Contents for PWR-ICE125

Page 1: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without priornotice 1 PWR ICE125 PWR ICE250 DSP CONTROLLED PLATE AMPLIFIER User Manual...

Page 2: ...notice 2 Revisionhistory Revision Description Date V1 0 Initial revision 28 06 2013 V1 1 Updated typo on wiring 24 07 2013 V2 0 MergedPWR ICE125 andPWR ICE250 completelyrevised 31 August2016 V2 1 Adde...

Page 3: ...y 15 3 1 High voltage WARNING 15 3 2 Main panel 16 3 3 AC Power 17 3 4 Analog audio input 18 3 4 1 Input sensitivity jumpers 18 3 5 Digital audio input and link passthrough AES EBU 19 3 6 Ethernet 20...

Page 4: ...5 3 FIR filtering and design FIR plugin only 39 5 3 1 FIR filtering overview 40 5 3 2 FIR filter design software 40 5 3 3 Filter file format 41 5 3 4 Loadingfilter coefficients 41 5 4 Custom biquad pr...

Page 5: ...rocessorrecommended 512 megabytes MB of RAMor higher Keyboardandmouse or compatible pointingdevice Microsoft Windows Vista SP1 XPproSP2 Win7 Win8 1 Win10 Microsoft NETframeworkv3 5 or later Adobe AIRe...

Page 6: ...enabling audiothroughany connectedoutputdevice oramplification Doingsowill helpensure thatthe software is correctlyconfigured Finally note thatthe PWR ICEamplifierisaveryflexible device and many of th...

Page 7: ...and duringthe usage of the amplifierpleaseensure thatall recommendations especiallythe safety recommendationsasdetailedinthe usermanual are adheredto The AmplifierUnitisdesignedforthe amplificationof...

Page 8: ...lyinE1 E2 E3 or E4 environmentsaccordingtoEN55103 2 Electromagneticcompatibility Productfamilystandardforaudio videoandaudio visual andentertainmentlightingcontrol apparatusfor professionaluse Part 2...

Page 9: ...entsuddenhighlevelsof noise which may cause hearingor speakerdamage Output connectors WARNING Outputconnectormarkedwiththe lightningflashesindicatehighvoltagesthatare potentiallylifethreatening Wiring...

Page 10: ...tionforanyin speakerDSP power application Optional backboxes canbe purchasedto convertthe plate amplifiersintostandaloneamplifiers PWR ICE125 Thisversionof the PWR ICEamplifierusesthe ICEpower 125ASX2...

Page 11: ...ngthatthe DSP will perform Itprovidesafriendlyuserinterface anddownloadsinstructions overthe network intothe amplifiers thattell themhow toprocessthe audiosignal 1 2 CHOOSING A PLUGIN There are twoplu...

Page 12: ...lectthe PluginGroup PWR ICE125 250 at the linkbelow https www minidsp com support redeem coupon The User Downloadslinkisvisible fromthe dropdownmenuatthe top rightof the website page Navigate tothe PW...

Page 13: ...later Latestversionof Adobe Air MicrosoftVisual C 2010 RedistributablePackage for x86 32 bitoperatingsystem orx64 64 bitoperating system 2 1 2 Plugin installation Note if youare upgradingfrom version...

Page 14: ...enWith itemand thenclickon Installer default 3 The followingwindow will appear Clickon Open 2 2 2 Plugin installation a Navigate tothe Mac sub folderof the unzippedutilityprogramdownload b The install...

Page 15: ...reason you shouldneveroperate the plate amplifierandtouch the rear ofthe unit ALWAYSDISCONNECT THE AC POWER FROM THE UNITBEFORE DOING ANYMODIFICATIONTO YOUR PLATE AMPLIFIER Refertothe diagrambelowsho...

Page 16: ...dsp com Features and specifications subject to change without priornotice 16 3 2 MAIN PANEL Connectionsare made onthe mainpanel withthe exceptionof the speakeroutputs The PWR ICE125is shown here the P...

Page 17: ...rusingthe supplied IECpowercord Before connecting ensure thatthe voltage selectorisset to the correct value foryour country 115 or 230 V The PWR ICE amplifiermustbe configuredforthe correctAC voltage...

Page 18: ...le if connectinga subwooferaswell asa speakertoa preamplifieroutput use aY splitteradapterorcable Checkthe specificationsforyourpreamplifiertoensure thatthe minimumspecified loadimpedance islessthan10...

Page 19: ...such as those available fromcompaniessuch asNeutrik Canare andSwitchcraft Whenthe amplifierisindigital inputmode anda digital inputsignal isconnected the inputsignalisbuffered and presentedonthe Digit...

Page 20: ...lustrated twoPWR ICEamplifiersare connectedviaanEthernetcable tothe Ethernetrouter while the computeris connectedtothe LAN overWi Fi The networkmustbe capable of DHCPso that the PWR ICE amplifierswill...

Page 21: ...aker drivers The plugin mustbe configuredin 2 chmode see page 28 andthe wiringconnectedto the two driverswithchannel andpolarityasshown onthe leftof the diagrambelow BTL mode In BTL bridge tiedload mo...

Page 22: ...erinterface withthe keyareashighlighted Main menu Usedfor operationslike savingandloadingconfigurations restoringthe amplifiertodefault settings andfirmware upgrades Configselect Selectsone of fourcon...

Page 23: ...tion toensure thatthe amplifiercontainsapropersetof defaultsettings Onsubsequentconnections if thisdialogappears youwill usuallyselectUse onBoardConfigor Synchronize Config See Workingwithconfiguratio...

Page 24: ...ngadifferentplugin Forexample youpreviously synchronizedwiththe 96kpluginbutare now runningthe FIRplugin onyour computer The pluginshave hada major upgrade that requiresanincompatible configurationfor...

Page 25: ...To rename an amplifier youmustfirstbe connectedtoit Thenclickon itsname inthe connectioninformation area delete the currentname andtype a new name Thenclick the returnkey The followingdialogwill appe...

Page 26: ...tions 4 5 MASTER VOLUME AND MUTE The Master Mute buttonenablesanddisablesbothoutputchannels The Master Volume selection buttons control the wayinwhichmastervolume control isdone Disable Master volume...

Page 27: ...the top of the maincontrol window Channel 1 L The leftinputsignal onlyisprocessed Channel 2 R The right inputsignal onlyisprocessed MixedL R The leftand rightinputsignalsare summedtogetherforprocessi...

Page 28: ...oth channels InStereoinputmode eachamplifierchannel receivesits respective inputchannel BTL The two amplifierchannelsare configuredintoBTL bridge tiedload mode Inthismode the amplifierchannelsare driv...

Page 29: ...byone amplifier channel withthe signal takenfrom the sumof the leftandright inputchannels Stereo 2 ch In thisconfiguration the PWR ICEamplifieractsas a DSP controlledstereo amplifier One use iswhen th...

Page 30: ...0 2 Gain adjustment and level monitoring The gain of the inputchannel can be adjustedbymovingthe Gainadjustmentslider orby usingthe keyboard Up and Downarrows afterplacingthe focusonthe slider see Key...

Page 31: ...toring The gain of each outputchannel can be adjustedbymovingthe Gainadjustmentslider orbyusingthe keyboard Up andDown arrows afterplacingthe focuson the slider see KeyboardShortcuts The maximum gains...

Page 32: ...nverted Insubwooferapplications thiscanbe helpfulto improve integrationwiththe mainspeakers 4 11 6 Time delay A delayof upto 10 ms 96k plugin or21 875 ms FIR plugin canbe appliedto eachoutputchannel T...

Page 33: ...sinthe pluginuserinterface are downloaded immediatelytothe PWR ICEamplifier The effectof these changeswill thusbe audible asthe changesare made Whenthe plugingoesintoonline mode itcheckstosee whetheri...

Page 34: ...sonline butdoesnotswitch configurations 4 12 3 Saving and loading configurations Configurationscanbe savedtoand loadedfromfiles Eachconfigurationisstoredinaseparate file Itisstrongly recommendedthatea...

Page 35: ...shouldbe selectedandchecked initializedpriortoconnecting loudspeakersto the PWR ICEamplifier 4 13 KEYBOARD SHORTCUTS The PWR ICE amplifieruserinterface supports the use of the keyboardformanyoperation...

Page 36: ...peakingboostorcut filter highshelf filter orlow shelf filter The top sectionof the control panel showsthe overall responsecurve of all six PEQfilters Hoveringthe mouse overthe curve bringsupan overla...

Page 37: ...B_EQfilterreducesthe numberof available filtersinthatblockbyone Frequency For the PEAKfiltertype thisisthe centerfrequencyof the peakordip For the HIGH_SHELF and LOW_SHELF filtertypes thisisthe freque...

Page 38: ...hannel 2 whichisa high passfilter alsoat2000 Hz but witha differentslope Each filtercan be setto one of a range of filtertypesandslopes The filtertype determinesthe shape of the filteraroundthe crosso...

Page 39: ...6 dB downat the cutoff frequency Bessel Available in12dB octave only aBessel filtergivesamore gradual roll off throughthe crossoverregion Bypass Clickingonthe Bypass buttondisablesthathighpassor low p...

Page 40: ...y calculatedfromearlieroutputvaluesaswell as frominputvalues AnFIRfilterisspecifiedbyalarge array of numbers whereasanIIRfilterrequiresonlyafairlysmall of valuestobe specified These numbersare convent...

Page 41: ...efficientsloaded b Confirmthatthe response curve isas youexpect c PressSendto DSP This will write the coefficientsintothe DSP smemory d To clear the filtercoefficients click UnloadFIRand then Sendto D...

Page 42: ...be describedeitherwithan equationorwitha signal flowdiagram asshownhere A single biquadlike this canperformagreat manyfunctions includingall of the functionsof asingle parametric EQ filter one 6 or 12...

Page 43: ...ed mode all eightbiquads needtobe specified After pastinginthe biquadcoefficients clickonthe Processbuttonforthemto take effect 5 4 3 Biquad calculation spreadsheet The community developedbiquad calcu...

Page 44: ...eredtospeakersand thusreduce the risk of damage fromoverdriving Thisscreenshotshowsanexample Compressorsetting Note thatthe compressoralgorithmisbypassedbydefault so clickonthe Bypass buttonto see the...

Page 45: ...output SE 2 ch mode RL 4 1 120 W channel 230V 50Hz AC 105 W channel 115V 50Hz AC Power output BTL mode RL 4 2 450 W 230V 50Hz AC 370 W 115V 50Hz AC Dimensions H x W x D 153 x 216 x 77 mm 6 1 3 PWR ICE...

Page 46: ...P Ltd Hong Kong www minidsp com Features and specifications subject to change without priornotice 46 6 2 MOUNTING DIMENSIONS 6 2 1 PWR ICE125 Figure 1 PWR ICE125 plate dimensions and mounting hole loc...

Page 47: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without priornotice 47 Figure 2 PWR ICE125 recommended cutout dimensions red outline...

Page 48: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without priornotice 48 6 2 2 PWR ICE250 Figure 3 PWR ICE250 plate dimensions and mounting hole locations...

Page 49: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without priornotice 49 Figure 4 PWR ICE250 recommended cutout dimensions red outline...

Page 50: ...akerenclosure isthereforenot recommended Instead asub enclosure shouldbe used 3 Adequate space andairflow mustbe allowedaroundthe amplifiertoaidcooling If a separate sub enclosure isused ensure thatai...

Page 51: ...he IPaddressof the amplifier 4 On the panel of the amp the source selectionLEDwill extinguish toindicate thatthe amplifierisinboot loadermode The orange LED on the Ethernetjack will flashintermittentl...

Page 52: ...printedbyTerminal blue textistexttypedinby you and redtextisthe program output It isimportantthat youtype exactlyasshownincludingcharacters like and where noted Press the Tab keyafter typingthe firstt...

Page 53: ...sure your computerisnotset to use a static address c On WinXP confirmthatyouhave installed the net environment d Confirmthatyou donot have a firewall blockingthe communication 4 Plugindoesnotdetect am...

Page 54: ...ee if this issue hasalreadybeenraisedandasolutionorsolutions provided 2 Contact miniDSPviathe supportportal at minidsp desk com with a The specificproductyouare havinganissue with inthiscase PWR ICEam...

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