AMC User Manual
Contents
1. AUDIO MANAGEMENT CONTROLLER AMC MANUAL Page 1 Description The Blue Sky Audio Management Controller AMC is an 8 channel audio DSP platform with both 24 bit digital and analog Each channel of the AMC has a sample rate converter by stereo pair a 31 band 1 3 octave equalizer eight parametric free assignable filters individual channel delays and lip sync delay An 8x8 cross point mixer allows any input to be mixed to any output The flexible bass management system can be customized on a channel by channel basis or turned off completely The AMC has 6 presets each of which stores complete setup information including filter setting I O configuration delays etc Page 2 AUDIO MANAGEMENT CONTROLLER AMC MANUAL Table of Contents Page Number s AMC Connections and set up 4 5 AMC Remote Operation 6 8 AMC Firmware Updates 9 10 AMC Control Software 10 16 AMC Speaker Room Optimization SRO Software 17 23 Page 3 AMC I O connections The AMC I O connections use Tascam DB25 connectors for both analog and digital These DB25 cables are not supplied Designed and Assembled in the USA siy 8 CH AES EBU 8 CH ANALOG OUT 8 CH ANALOG IN RIAS densi T DIGITAL 110 OHM BALANCED ALANCED VOL MUTE CABLE semet BALANCED m cam 2 Bos 100 230 VAC 5Q toHZ OU 30 WATTS Channel assignments The channel assignments are SMPTE2. 707 HPBW4 Two 2 filters in series resulting in 24 dB oct high pass For the feeds to the subwoofer you have a choice of Bypass LP2 LPBW4 and filters In addition to the low pass filters for the subwoofer there are auxiliary high pass filters that can be used on each channel feed to the subwoofer The choices for the high pass filter are Bypass HP2 and HPBWA Normally these filters are used with bass management where you don t want the signal sent to the subwoofer to go down to 20 Hz Page 14 For example if you re doing editorial work on a soundtrack that is being mixed for a theatrical release a bass managed system mix can result in too little bass when played back on the theatrical system This is because front speakers in a theatrical system typically only go down to 40 Hz So to get better translation you could employ a 40 Hz HP2 or HPBW4 high pass filter on the left center and right channels The same holds true for surround speakers In a typical theater setup the surrounds typically do not go down below 60 Hz Again to get better translatability you may employ a 60 Hz high pass filter on the surround channels The AMC system also includes a high pass filter for the each channel These filters are not in the subwoofer feeds but on the individual channels The choices are Bypass HP2 or HPBW4 The bypass setting is used when you re not using bass management HP2 or HPBW4 are used depending on the actual
3. MAY LEVEL 12 dBu Page 6 The AMC Remote Operation MUTE mutes all channels both digital and analog REF sets the system gain to a user defined reference level The default setting is 20 dB The default setting can be changed utilizing the remote menu or the AMC Control Software DIM CANCEL sets the system gain to a user defined level The default setting is 30 dB The default setting can be changed utilizing the menu or the AMC Control Software The DIM CANCEL switch is also used to exit the menu mode MUTE MODE mutes the selected channels when pressed SOLO MODE solos the selected channels when pressed SOLO MUTE BUTTON solo s or mutes that channel PRESETS loads the preset MENU allows a limited number of parameters to be changed within a preset When exiting the menu mode the changed parameters are automatically stored in flash memory GAIN uses a rotary incremental encoder that changes the system gain 0 5 dB increments Also used to scroll through the menu and change the selected parameter The MENU Menu Switch enters the menu mode and switches between scroll and parameter modes In the Scroll mode the gain control scrolls through the menu items In the Parameter mode the gain control changes the selected parameter To switch between modes tap the menu key The current mode is displayed at the bottom of the display Dim Cancel switch exits the menu mode and stores the changed values
4. user created The software then compares the speaker response against the target and generates an error value The error value is a quantitative measure of how well they match The larger the error the worse the match The software uses filters like a 1 3 octave equalizer to correct the frequency response of the speaker to lower the overall error i e a better match It does this using a genetic mutation algorithm called BOO BOO mathematically generates thousands of different EQ settings and determines which one gives the best match to the target curve Once BOO picks the best match the user has the option of accepting it or tweaking manually form there One last point The SRO program will correct many frequency response problems but it does have limitations It will not give repeated reliable results if the room is too noisy It will not make a poorly designed room with poor acoustic treatment sound like a well designed room Page 17 Additional equipment you will need The Blue Sky SRO program uses an inexpensive USB audio interface and measurement microphone to generate test tones and measure the frequency response of the speakers attached to the AMC You will need the following 1 Measurement microphone the recommended choices are the Dayton Audio EMM 6 or Behringer ECM8000 However it is possible to use other high quality other measurement microphones but the above are known to work fine and are relatively inexpe
5. 500 1K 2K 5K 10K 20K Hz 24 L 20 50 100200 500 1K 2K 5K 10K 20K LR TARGET 20 50 100 200 500 1K 2K Hz 2 TIE 20 50 100 200 500 1K 2K RR TARGET 5K 10K 20K 5K 10K 20K This screen shows the current state of the EQ target filters measured frequency response and corrected frequency response of all the channels Clicking on the small graphs will open up a larger graph The optimize button above each channel determine if the channel is measured and or optimized For example If you want to measure only the left channel click on the optimize button for the left channel and hit the Measure button NOTE You can t optimize a channel until you measure the channel Page 20 Making a Measurement LEFT CHANNEL dB AVG MIC LEVEL BEST ERROR CURRENT ERROR MEASURED TIME DELAY MS 8 6 The GREEN curve is the measured frequency response The RED curve is the target response The BLUE curve is the electrical response of the EQ installed in the speaker The optimum average microphone level is somewhere is between 20 to 0 dB If the level is low increase the gain on the remote control If the measured response is too low the noise floor of the room and or the microphone may prevent an accurate measurement Normally when optimizing a Blue Sky SAT6D the remote gain control is set for OdB Page 21 Checking or Adjusting the Target Curve To review or
6. REAR RIGHT REAR 0 o 01 20 40 40 100 1 000 10 000 100 1 000 10 000 100 1 000 10 000 Hz Hz Hz BASS MANAGER FILTERS AUX HIGH PASS SUB TYPE FREQ LIN LPBW4 M 80 00 HP2 M 20 00 HP2 80 00 RIN LPBW4 80 00 HP2 M 20 00 HP2 80 00 CIN LPBW4 hd 80 00 HP2 20 00 HP2 v 80 00 1 6 120 00 HP2 20 00 55 v 80 00 LSIN LPBW4 v 80 00 HP2 ki 20 00 HP2 v 80 00 RSIN LPBW4 M 80 00 HP2 M 20 00 HP2 v 80 00 LRIN LPBW4 v 80 00 HP2 v 20 00 HP2 M 80 00 RRIN LPBWA 80 00 HP2 Y 20 00 HP2 80 00 LOW PASS SUB HIGH PASS ON CH TYPE H FREQ 71180 HZ BMC NO AUX HP 73 BMC 40HZ MAIN SUR Lista usi llis 7 180 HZ BMC 60 HZ SUR 7 1 BMC 100 HZ 5 1 BMC 80 HZ LR RR BYPASS The bass management screen shows the bass management settings for each individual channel and the graphs show the resulting frequency response Note These graphs however do not show the EQ control settings on these channels For each channel the type of filter employed and the cutoff frequency of that filter can be selected The filter labels have the following meanings Bypass No filter in circuit LP2 274 order 12 dB oct low pass filter with a Q of 707 LPBWA Two LP2 filters in series resulting in a 24 dB oct low pass LP6 6th order Chebyshev 36 dB oct filter typical LFE Filter HP2 274 order 12 dB oct high pass filter with a Q of
7. in the current selected preset An example of using the MENU to change the left calibration to 3 dB 1 Tap the menu switch 2 Rotate the gain control to cycle through the menu items to left calibration 3 Tap the menu switch to enter parameter mode Page 7 4 Rotate the gain control CW or CCW until the display reads 3 0 dB 5 Tap the menu key to go back to scroll mode 6 Tap the dim cancel switch to exit the menu and store the preset 7 To change multiple items follow 1 5 on each parameter and then hit the dim cancel key when you have completed all your changes Menu Items 1 Channel Calibration sets the output level for the selected channel Used to balance channel levels N Channel Delay sets the time delay for the selected channel Channel delay is used to time align each speaker to compensate for the unequal distances between the listener and the speaker For example a subwoofer is usually farther away from the listener than the front speakers so the sound from the subwoofer arrives later than the sound from the front speakers In this case you would add additional time delay to each of the front speakers to time align with the subwoofer The time delays of each speaker can be measured using the AMC Control software and the optional recommended measurement microphone and USB audio interface See the section on additional equipment you will need below 3 Lip Sync delay Many video displays h
8. standard 1 Left 2 Right 3 Center 4 LFE 5 Left Surround 6 Right Surround 7 Left Rear 8 Right Rear The channel assignments match the labels on the remote However these channels labels are for reference only Any channel can be used for any purpose desired The only exception is the LFE channel which includes the bass management filters Since these filters can be disabled using the AMC Control Software the LFE channel can be reconfigured as a standard channel like the others Analog 1 0 The analog inputs and outputs are balanced with a switchable maximum level of 12 24 dBu Both analog and digital outputs are active irrespective of whether the inputs are digital or analog Digital 1 0 The digital inputs and outputs are AES EBU 110 ohm and transformer isolated When using the digital inputs the master digital clock is derived from the Left Right input or the system clock using a sample rate converter Currently the master clock is limited to a native sample rate of 48 kHz A future firmware upgrade will allow either 48 kHz or 96 kHz to be selected If you want to use the AMC with a digital input of 44 1 kHz 88 2 kHz 96 kHz you must use the built in sample rate converter 192 kHz is not supported Page 4 Sample Rate Converters Each stereo input pair Left Right has an independent Cirrus Logic sample rate converter that can be activated through the AMC Control Software If you want to utilize any sam
9. 5K 10K 20K Hz 20 50 100 200 500 1K 2K 5K 10K 20K Hz 20 50 100 200 500 2K 5K 10K 3 Hz 920 50 100 200 500 1K 2K 5 10K 20K Hz 4 20 50 100 200 500 1K 2K 5 10K 20K Hz LEFT TARGET RIGHT TARGET 7 E 20 50 100200 500 1K 2K 5 10K 20K Hz E 20 50 100200 500 1K 2K 5 10K 20K Hz CENTER TARGET A 20 50 100 200 500 1K 2K 5K 10K 20K Hz LFE TARGET 20 50 100 200 500 1K 2K 5K 10K 20K Hz 20 50 100200 500 1K 2K 5K 10K 20K Hz 20 50 100 200 500 1K 2K 5K 10K 20K Hz LEFT EQ RIGHT EQ CENTER EQ LFEEQ 2 2 2 2 dB dB dB dB 2 2 ET 2 20 50 100 200 500 2K 5K 10K 20K 20 50 100 200 500 1K 2K 5K 10K 20K 20 50 100 200 500 1K 2K 5K 10K 20K 20 50 100 200 500 1K 2K 5K 10K 20K Hz Hz Hz Hz OPTIMIZE OPTIMIZE EA OPTIMIZE LS FREQUENCY RESPONSE RS FREQUENCY RESPONSE LR FREQUENCY RESPONSE RR FREQUENCY RESPONSE dB 2 dB dB 2 dB 2 i ET ET 20 50 100 200 500 1K 2K Hz 5K 10K 20K 20 2H T 20 50 100200 500 1K 2K 5K 10K 20K LS TARGET 20 50 100200 500 1K 2K 5K 10K 20K Hz LSEQ RS TARGET 20 50 100 200 500 2K 5K 10K 20K Hz RSEQ 2 20 50 100200 500 1K 2K 5K 10K 20K 20 50 100 200
10. AL 48K 5 1 80HZ BM LFE 10 DIGITAL 48K 7 1 80HZ BM LFE 10 DIGITAL 48K 7 1 80HZ BM LFE 10 DIGITAL 48K 5 1 80HZ BM LFE 10 DIGITAL 48K 5 1 80HZ BM LFE 10 NO SRC SUR 3dB NO SRC SUR 0 dB R 3 dB R NO SRC SUR 3dB DOWN MIX STEREO NO SRC SUR 0 dB DOWN MONO This is the main setup screen for the AMC control program It shows which preset is loaded in the AMC and the current configuration of that preset The AMC control program reads the master gain setting from the remote and will update that setting in real time Since the master gain setting is affected by the mute reference and dim switches the AMC control display will reflect the system gain if you activate those switches It will not recognize presets changes made on the remote or parameter changes using the menu of the remote To manipulate those values use the AMC control software and save those values using the blue buttons in the AMC control program The same holds true for loading and saving presets Page 11 Navigating around the interface Loading a preset Click on the blue buttons in the upper left hand corner of the screen Whenever you load a preset the current preset will automatically be saved to flash memory in the AMC rack The blue boxes represent items that are activated when clicked with your mouse In some cases clicking a blue box will initiate an action In other cases the box will open up another screen The black boxes with white text represent paramete
11. FF OFF OFF 9 99 OFF OFF OFF OFF LSIN OFF OFF OFF 0 00 0 00 OFF OFF OFF RSIN OFF OFF OFF 0 00 OFF 0 00 OFF OFF LRIN 0 00 OFF OFF 0 00 OFF OFF 0 00 OFF RRIN OFF 0 00 OFF 0 00 OFF OFF OFF 0 00 7 1 BMC LFE 10 SURO 8 CH MIXER LFE 10 5 1 BMC TO STEREO WITH SUB 5 1 BMC TO STEREO NO SUB 7 1 BMC LFE 10 SUR 3 8 CH MIXER LFE ODB 5 1 BMC TO MONO WITH SUB 5 1 BMC TO MONO NO SUB The cross mixer screen shows how each of the selected inputs analog or digital are routed to each individual channel output The value is in decibels For example a setting of 0 dB equals a gain of 1 To turn off the routing of an input you can either type in the text off or OFF The blue buttons along the bottom configure the mixer to common settings when engaged Note In some cases as in theatrical movie releases the surrounds are 3 db down from the main speakers If that is the case you also want to drop the surround feeds to the subwoofer For example you would set LS IN to LS OUT at 3 dB and then also set LS IN to LFE out at 3 dB To go back to the main AMC control screen click the X in the upper right hand corner of the screen Page 13 Bass management screen the blue bass management button will bring up the following screen LEFT RIGHT CENTER 9 204 9 20 40 40 40 100 1 000 10 000 100 1 000 10 000 100 1 000 10 000 Hz Hz Hz 100 1 000 10 000 Hz LEFT SURROUND RIGHT SURROUND LEFT
12. RAMETRIC 7 22080 432 000 Optimze Active PARAMETRIC 26915 432 0 00 Optimize PARAMETRIC 32810 432 000 Wl optimize Active PARAMETRIC v 39994 432 000 Tes i Beabve get 20 25 32 40 50 6 79 100 15 160 200 251 316 400 501 631 800 1K 13K 16K 20K 25K 32K 40K 50 63K 80K 10K 12K 16K 20K E MAX FILTER CUT DB 10 MAX FILTER BOOST DB 10 Page 16 Speaker Room Optimization SRO Overview SRO is a system for measuring the acoustic response of a speaker system and correcting the speaker system to a target frequency response The measurement portion of SRO uses a special noise signal called a maximum length sequence MLS Unlike white or pink noise MLS signals have unique properties that allow them to be used to calculate the impulse response of a speaker which contains the complete frequency phase and time response of the speaker Once you have obtained the impulse response with the use of a fast Fourier transform FFT it is easy to calculate the frequency response of the speaker Once the frequency response is obtained the next phase is optimizing During the optimization process the uncorrected frequency response of the speaker is compared against a desired frequency response called the target curve The target curve can be an X curve a flat frequency response curve or an arbitrary curve that the
13. adjust the Target curve for any speaker click on the target curve which will bring up the following screen 10 10 100 10 10 10 The target screen contains the following items Target Filters the target filters are used to construct the target curves In many situations the target filters are automatically selected from the values entered in the bass management panels which is the default setup for Blue Sky speakers using bass management If the target curves are not appropriate for your application you can construct a custom target curve using any or all filters NOTE Not all the values in the boxes are used for all filters For example the slope dB oct and Q are not used for HPBW4 etc If you change a value and there is no change in the graph that parameter is not used Also the HP Shelf and Low Pass Shelf are not real shelving filters but special target filters Real low pass and high pass filters have roll offs that are multiples of 6 dB oct For an example in post production near field monitors used for editing may require a 3 dB oct roll off above 4 kHz so the sound matches speakers on the dubbing stage Although a 3 dB target curve can be constructed with conventional filters it may take 6 or more separate filters and a lot of experimentation to get the target curve you want H
14. ave video processing delays which can cause the audio to be out of sync with the picture To compensate for video delay an overall audio time delay can be added to re synchronize the audio with the picture 4 12 24 analog max output level switch Some studio monitors are high gain devices that have a nominal input level of around 10 dBu and not 4 dBu This switches gain structure to 12 dB to optimize the signal to noise ratio Only affects the analog inputs and outputs 5 10mv sine wave output Puts a 10mv 1 kHz sine wave on all output channels that can be use to trace down wiring issues or to verify the AMC is outputting a signal 2 Restore factory default clears all entered preset data and restores the factory presets Follow the prompts on the screen Page 8 Firmware Updates The firmware in both the remote and rack can be updated through the USB ports and the using the Blue Sky Firmware Tool There are separate updates for the Remote and Rack Currently the firmware update tool only works under Windows 7 or an Apple computer running Windows 7 using Bootcamp or a virtual machine using Parallels or VM Ware It will work on both 32 bit and 64 bit operating systems A native OSX version will be released in the future Upgrading the firmware in the AMC N 2 5 6 T 8 Before using the AMC Control program the firmware in the AMC and Remote may require updating The AMC con
15. conds Plug the USB cable into the front of the AMC If this is the first time you have connected the AMC to your computer you may see a message that says USB detected installing software Wait until the computer is done and the LED on the front of the AMC goes back to flashing If everything is connected you should see the following screen ETE MASTER GAIN REF GAIN DIM GAIN SYSTEM SAMPLE RATE 0 00 20 00 3009 PRESET 48 kHz DIGITAL 5 1 48KHZ GO TO SRO SAVE PRESET W 96 kHz BMC 80HZ LFE 10dB MASTER CLK AES 1 2 1LOADED LOAD PRESET 2 LOAD PRESET3 SRC 7 8 LOAD PRESET 4 LOAD PRESETS LOAD PRESET 6 EQ CALIBRATION DE CH DELAY MS Wi UR ANALOG LEFT 1208 020 ANALOG IN C LFE ANALOG ANALOG GAIN DB 0 00 0 ANALOG 2408 MAX Wi LS RS ANALOG 000 Wi LR RR ANALOG CENTER 0 00 0 LFE 0 00 0 5 5 8IN8 OUT BASS MIXER MANAGEMENT 1 UR LOCK UR DIGITAL LEFT SURROUND 0 00 0 E EA C LFE DIGITAL RUN C LFELOCK SRC C LFE aiu RIGHT SURROUND 000 3 LS RS LOCK SRCLS RS DIGITAL GAIN DB DIGITAL LR RR LOCK srcuver 22 LRR DIGITAL LEFT REAR 0 00 0 000 RIGHT REAR 0 00 0 ANALOG 5 1 80HZ BM LFE 10 ANALOG 5 1 80HZ BM LFE 10 ANALOG 7 1 80HZ BM LFE 10 ANALOG 7 1 80HZ BM LFE 10 ANALOG 5 1 80HZ BM LFE 10 ANALOG 5 1 80HZ BM LFE 10 SUR 3 dB SUR 048 SUR 3 dB SUR 0 dB SUR 3 dB DOWN MIX STEREO SUR 0 dB DOWN MIX MONO DIGITAL 48K 5 1 80HZ BM LFE 10 DIGIT
16. e second line from the bottom is the software version installed 10 Click the X in the upper right hand corner to close the program The firmware installation process is complete 11 Repeat the process for the remote using the remote firmware update tool and the USB connector on the rear of the remote 12 Once you are done disconnect the USB cables power up the AMC and verify that the firmware versions of the remote and rack match The AMC Control Software The AMC Control Software is a 32 bit Windows 7 program and is intended for use only with the Blue Sky AMC The program will not start unless the AMC is connected to the computer by USB The program will work with 64 bit Windows 7 It has not been certified for other versions of Windows addition the program has been used successfully on Intel based Apple OSX computers running Windows 7 via Bootcamp or in a virtual machine using VMware or Parallels A copy of the AMC Control software is available for download Contact Blue Sky for a download link Installing the AMC Control software Download the setup program and save it to your computer at a location where you can find it Double click of the setup program to install it The installer will create a folder under the program files 0x86 called Blue Sky and install the program there Page 10 Running the Program Turn on the AMC and wait unit the red LED on the front of the AMC is flashing approximately once every two se
17. ied If you click on the EQ page you can manually adjust the filters If you are happy with the results click the SAVE PRESET button on the Main panel to save the EQ value to the flash memory of the AMC If you are measuring and optimizing more than one speaker the optimization process will balance the level of each channel and correct the time alignment for each speaker Those values will show in the Ch Delay ms and Calibration dB on the main AMC control Note The only live control on the AMC remote that will show status when the AMC program is running is the gain control Therefore when you have the AMC control program running make all changes like selecting presets using the control software program and not the remote When the Optimization process is complete the program will take you back to the SRO screen From there you can click on any of the graphs to get an expanded view so you can make any adjustments if necessary You are done Remember to save the preset so the values are written to the flash memory inside the AMC Page 23
18. nsive USB Interface the ART USB Dual PRE is the recommended USB audio interface used for measurement It is an inexpensive system with dual microphone preamps dual audio outputs operates at 48 kHz and has a phantom power supply for the measurement microphones It uses the built in driver for windows N 3 Microphone stand 4 2 1 4 TRS to XLR male microphone cables One can be short 1 5 ft for the loop back connection and one should be long enough to connect to the speaker 5 XLR microphone cable for the measurement microphone Setting up the ART USB Dual Pre to use with Blue Sky SRO Software 1 Connect the short TRS to XLR male cable from the Dual Pre right output to the Dual Pre right microphone input 2 Set the mix fader to computer 3 Set the output level straight up 12 O clock 4 Press the phantom power switch to on 5 Press the power to on 6 Connect the measurement microphone into the Dual Pre left microphone input 7 Set the gain control on the left input to 18 8 Set the gain control on the right input to 3 9 Connect the USB cable from the computer into the ART USB interface on the back If it s the 1st time the device is connected to the USB port you ll get a driver installation message Page 18 10 Setup the ART as the default playback device and set its Playback properties Windows Control Panel gt Sound gt Playback gt USB Audio CODEC gt Set Default Prope
19. owever with the special target shelf filters it is much easier Target Scale Low and High Freq the software uses the frequencies between these to calculate the avg microphone level and this is used to adjust the target curve so it floats with the drive level These frequencies are usually selected to be in a flat portion of the measured curve Page 22 Low and High Target Freq the optimizer only works in the frequency range located between these two points Any frequencies outside this range are excluded from the optimization process allowing you to limit the range of optimization For example you may not want to try to optimize a subwoofer flat to 20 kHz Or for instance you might only want to optimize for a narrow area between 100 Hz to 500 Hz The Graph The graph shows the current target curve Any change you make automatically updates the graph Optimizing Check the speaker you want to optimize Click the OPTIMIZE button which will start optimization During the process a pop up screen will show the current results The optimization process calculates the least squared error between the target curve and the corrected frequency response over the range between the two yellows lines The program will not try to optimize any filters or areas outside of the yellow lines NOTE The locations of the yellow lines can be changed on the Target screen Once optimization is complete the EQ page will show the current EQ appl
20. ple rate other than 48 kHz or digital inputs that are not synchronized to the LEFT RIGHT input you must activate the sample rate converter for that channel For example you are running a 48 kHz 5 1 mix with digital inputs driving the AMC but you want to connect an additional stereo signal to left and right rear channels from another digital audio source This source also outputs 48 kHz but it is not using the same digital audio master clock as the 5 1 mix In this case you would activate the sample rate converter for that stereo input Remote cable The cable between the remote and the rack unit is a standard Ethernet Cat 5 cable with RJ 45 connectors However the signal protocol between the remote and rack is RS 232 not Ethernet The remote cable has been tested to 50 ft Warning Do not plug the remote or rack unit into an Ethernet port It was not designed for this and doing so may damage the port or unit Quick setup and use The AMC comes with six presets 3 analog and 3 digital The standard set up is 5 1 with 80 Hz bass management Channels 7 amp 8 are routed to channels 1 amp 2 and the LFE There are also presets for 5 1 mix down to stereo and to mono The display has a short description of the presets These presets can be modified on a limited basis using the menu on the remote or completely reconfigured using the AMC Control Software Page 5 The AMC Remote GOIN 28 8 dB ANALOG 5 1 48KH2 BB8Hz LFE 18
21. rs that can be entered directly using the delete key the backspace key numerical keypad and the enter key The check boxes represent an either or setting For example if you click the left right digital check box it will automatically turn off the left right analog check box Digital in lock status box shows whether a digital input has a valid digital signal attached Sample rate converter status box selects whether the digital input has its sample rate converter activated Since for the digital input the master clock is the left right input clock if the sample rate converter is activated for the left right input the software automatically activates the sample rate converter on all inputs Preset display these 4 lines of text is what will appear on the remote when a preset is loaded Each line of text can be changed directly using the keyboard and delete and backspace key Channel Calibration sets the relative balance between the channels These values can be entered directly in the boxes or entered automatically using the SRO procedure See the Speaker Room Optimization SRO section below for more information Page 12 Cross Mixer Screen when you click on the cross mixer box on the main screen it will open up a new screen as follows 8X8 CROSS MIXER LOUT ROUT COUT LFE OUT OU SOUL LROUT RR OUT LIN 0 00 OFF OFF 0 00 OFF OFF OFF OFF RIN OFF 0 00 OFF 0 00 OFF OFF OFF OFF CIN OFF OFF 0 00 0 00 OFF OFF OFF OFF LFEIN O
22. rties gt Advanced gt 16 bit 48000Hz DVD Quantity gt OK 11 Setup the ART Dual Pre as default recording device and set its recording properties Windows Control Panel gt Sound gt Recording gt Microphone USB Audio CODEC gt Set Default Properties gt Listen gt Uncheck gt Listen to device Properties gt Levels gt 100 Properties gt Advanced gt 2 channel 16bit 48000 Hz gt OK Note If you disconnect the ART Dual Pre from your computer you may have to go through this process again After you have set up the ART USB Dual Pro to work with the Blue Sky SRO program follow these additional steps to connect the ART USB Dual Pre to the Blue Sky AMC 1 Using a microphone stand set the measurement microphone at your listening position and at ear height 2 As previously stated connect the measurement microphone into the Dual Pre left microphone input 3 Connect the output of the Dual Pre Left channel to Right Rear analog input on the AMC Page 19 Starting the SRO program Once the AMC Control program is running click the SRO button in the right hand corner of the main screen The following screen will pop up Blanc SINEWAVE IN MV MEASURE CLEAR EQ ENABLE MIC CAL SINE WAVE 10 00 OPTIMIZE OPTIMIZE LEFT FREQUENCY RESPONSE RIGHT FREQUENCY RESPONSE CENTER FREQUENCY RESPONSE LFE FREQUENCY RESPONSE 20 50 100 200 500 1K 2K
23. speaker attached to the channel If the speaker is made for bass management i e Blue Sky SAT6D then you use a HP2 set to 80 Hz If however if the attached speaker is a full range monitor that may go down to 50 or 40 Hz you d use a HPBWA to get a better blend with the subwoofer Page 15 EQ screens clicking on one of the blue EQ boxes will open up an EQ screen for that channel For example clicking the left box will open up the following screen Each channel of the AMC has a 31 band 1 3 octave graphic equalizer and 8 uncommitted filters There are several choices for filters including low pass shelf high pass shelf parametric low pass high pass etc The optimize check box determines whether the graphic EQ or any of the individual filters will be used in the speaker room optimization process The active check box determines whether the filter is used or bypassed The maximum filter cut and boost settings set the maximum range of correction of the filters during the speaker room optimization process LEFT EQ NER EQCURVES Trin T t 2 50 100 200 500 K 5K 10K 20K 1 3 OCT EQ FILTERTYPE FREQ Q BOOST M Optimze W Active PARAMETRIC 10000 432 000 M Optmze Active PARAMETRIC v 12190 432 000 Optimze Active PARAMETRIC 14859 432 0 00 optimze PARAMETRIC v 18113 432 000 Optimze Active PA
24. trol program is tied to a specific version of firmware For example AMC Control Software version 4 02 will only work with firmware 4 02 etc The firmware version installed in the Rack and Remote is displayed on the remote screen during power If the firmware requires upgrading to match a new version of the AMC Control program follow the following steps Download and install both firmware update tools from the Blue Sky website The installation tool will create a new directory in the Program Files 0x86 sub directory The firmware update tool uses the Microsoft Net Framework runtime library which is normally already installed with Windows If it won t run go to http www microsoft com enus download details aspx id 3387 and download and install the Microsoft Visual C 2005 Redistributable Package x86 If you get a message that the program requires Elevation and will not run right click on the installer and click Run As Administrator Power down the AMC and plug in the USB cable into the front of the rack If this is the first time you ve connected your AMC to your computer you may get a message that the computer is installing drivers for the USB interface Wait until that completes and tells you it s been successful Start the program The 2nd line from the bottom indicates the currently installed firmware Click Open Hex File and select the file new firmware for the AMC Rack Click Program Verify Click Read Device Page 9 9 Th
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