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AUDIO MANAGEMENT CONTROLLER (AMC) MANUAL

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Содержание AMC

Страница 1: ...Page 1 AUDIO MANAGEMENT CONTROLLER AMC MANUAL ...

Страница 2: ... 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 The AMC includes control software that is a PC Mac in process application that connects through the USB port The AMC includes SRO Sound Room Optimizatio...

Страница 3: ...12 Upgrading the firmware in the AMC Remote to the latest version 13 The AMC Control Software 14 Installing the AMC Control software 14 Running the Program 14 AMC Main Control Panel 15 Navigating around the interface 15 Cross Mixer 18 Bass Management 19 EQ Screen 21 Speaker Room Optimization SRO 23 Overview 23 Additional equipment you will need 23 Measuring and optimizing your speaker system 24 Gu...

Страница 4: ...Page 4 Setting up the ART USB Dual Pre for use with the AMC SRO 27 The SRO Main Screen 28 Target Curves 30 AMC Specifications 32 ...

Страница 5: ...multaneous digital and analog outputs o Adjustable analog and digital output offset o Quad Analog Devices 56 bit fixed point processor o Digital input sample rate range 44 1 kHz to 192 kHz o Internal sample rate 48 kHz or 96 kHz switchable o 31 Band 1 3 octave double precision digital EQ per channel o 8 user definable 2nd order double precision digital filers per channel o 6 user defined presets o...

Страница 6: ...ing the AMC Control Software the LFE channel can be reconfigured as a standard channel like the others Analog I 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 I 0 The digital inputs and outputs are AES EBU 110 ohm and transformer isolated All digita...

Страница 7: ...e the entire system This function is normally used for talk back muting The mute input is opto isolated to prevent ground loops when using an external supply To use an on off switch connect the normally open switch from across pin 4 and 5 and connect a jumper wire from pin 1 to pin 4 Closing the switch will activate mute To use an external voltage trigger voltage to mute the rack connect the trigg...

Страница 8: ...arning 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 default presets Any preset can be reconfigured to analog digital or a mix The display will show a brief description of the selected presets These presets can be modified on a limited basis using the menu on the remote or c...

Страница 9: ...ote 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 using the remote menu or the AMC Control Software ...

Страница 10: ... Menu You enter the menu by pressing the Menu switch and leave the menu by pressing the Dim Cancel switch The menu works in 2 modes A scroll mode to scroll the parameters using the gain control And a parameter mode to change parameters using the gain control To switch between modes you tap the Menu switch When you tap the Dim Cancel switch to leave the menu mode the preset is automatically saved w...

Страница 11: ...ed 5 Dim gain sets the system gain when the dim button is pressed 6 12 24 Analog Max IO Level 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 This only affects the analog inputs and outputs 7 Pink noise outputs a low level pink noise signal on the analog and digital...

Страница 12: ...rmware can only be updated when the rack is powered down 1 Install the Blue Sky AMC RACK Firmware X XX update tool The Installation tool will create a Blue Sky folder in the Program Files 0x86 sub directory and Install the update program and the new hex file in that directory The firmware update tool uses the Microsoft Net Framework run time library which is normally already Installed with Windows...

Страница 13: ...library which is normally already installed with Windows If it won t run install vcredist_x86 EXE and dotNetFx35setup exe 2 If you get a message that the program requires Elevation and will not run right click on the installer and click Run As Administrator 3 Disconnect AMC Remote and plug in the USB cable If this is first time you ve connected the AMC Remote to your computer you may get a message...

Страница 14: ...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 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 seconds and the remote Mute button is lit Plug the USB cable into the front of the...

Страница 15: ...ur mouse In some cases clicking a blue box will initiate an action and in other cases it will open up another screen Black boxes with text represent parameters that can be entered directly using the delete key the backspace key numerical keypad and the enter key To change the value select value you want to change with the mouse use the delete key to a erase the old value type in the new value and ...

Страница 16: ... or 24 dBu When using strictly analog I O the nominal gain at reference 0 is 0 dB However if you re using digital in and analog out changing the analog output level from 12 to 24 will cause a 12 dBu drop in level on the analog output Channel analog digital input switches selects the input source as either digital or analog Digital inputs have 140 DB dynamic range sample rate converter that will co...

Страница 17: ... an offset for all analog output channels Used primarily to correct for imbalances between digital in and analog out or to scale the analog outputs of the entire box gain Digital gain sets the offsets for all digital outputs primarily to correct gain differences between analog in and digital out Go to SRO opens up the SRO screen Save presets to file saves all 6 presets to a text file Used to archi...

Страница 18: ...will be disabled and displayed in red indicating that they cannot be changed If in this state the user will have to go to the base management screen and turn bass management ON before these values can be edited The gray buttons along the bottom of the screen configure the mixer to a variety of common setups These buttons only program the cross mixer and do not affect the bass management settings T...

Страница 19: ...s LP6 6th order Chebyshev 36 dB oct filter typical LFE Filter HP2 2nd order 12 dB oct high pass filter with a Q of 707 HPBW4 Two HP2 filters in series resulting in a 24 dB oct high pass For the feeds to the subwoofer you have a choice of Bypass LP2 LPBW4 and LP6 filters In addition to the low pass filters for the subwoofer there are auxiliary high pass filters that can be activated on each channel...

Страница 20: ... setting is used when you re not using bass management HP2 or HPBW4 are used depending on the actual speaker attached to the channel If the speaker is made for bass management i e Blue Sky SAT6D then you would use 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 HPBW4 to get a better blend with the subwoofer Bass Management on ...

Страница 21: ...zation Used to set the maximum amount of correction the optimizer will use for any filter Optimize 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 Active sets whether the filter is in use or bypassed Filter type select the filter typ...

Страница 22: ...saves the displayed EQ setting to any preset This feature is commonly used to copy EQ data from one preset to another preset Display EQ channels switches the screen to a different EQ without having to close and re open the screen ...

Страница 23: ...get curve can be an X curve a flat frequency response curve or an arbitrary curve that the user created To find the combination of filters that best corrects the desired frequency response target the AMC control software uses a proprietary genetic mutation algorithm called BOO BOO mathematically generates thousands of different EQ settings and determines which one gives the best match to the targe...

Страница 24: ...s the default recording and playback device and it is set up with the correct properties See page 21 4 Connect a USB cable to the front of the AMC and computer and when ready start the AMC control program Go to the SRO Screen page 23 5 Setup your Target curves for each individual speaker with any customization that you may need Page 24 6 Load the preset you want to use to store the optimize values...

Страница 25: ...e microphone should be placed at ear level 2 Most of the frequency response problems in rooms are related to standing waves and boundary effects which occur at frequencies below 1KHz and typically below 200 Hz If this is the main area the user wants to focus on the exact aiming of the microphone to the speakers is noncritical The mic can be pointed at the speaker or an angle of 45 or straight up 3...

Страница 26: ...e on the back If it s the 1st time the device is connected to the USB port you ll get a driver installation message 10 Setup the ART as the default playback device and set its Playback properties Windows Control Panel Sound Playback USB Audio CODEC Set Default Properties Advanced 16 bit 48000Hz DVD Quantity OK 11 Setup the ART Dual Pre as default recording device and set its recording properties W...

Страница 27: ... USB Dual Pro Set the gain control on the LEFT input to 18 3 Connect the RIGHT output of the ART to the RIGHT Microphone In Set the gain control to 3 4 Connect the output of the ART Dual Pre Left channel to Right Rear analog input on the AMC 5 On the rear of the ART set the MIX knob FCW to Computer 6 On the rear of the ART set the LEVEL knob to 12 o clock straight up 7 On the rear of the ART press...

Страница 28: ... The SRO screen has the following features and operations Frequency response displays the measured and corrected frequency response of the selected speaker Target displays the desired frequency response after correction EQ the electrical EQ with the speaker Select determines whether the speaker will be measured and or optimized Measure measures the frequency response of the selected speakers Optim...

Страница 29: ...l is somewhere is between 20 dB 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 system the remote gain control is set for 0dB ...

Страница 30: ...ied Therefore when you re start the AMC control program in a new session the program will remember your target curves without having to re create them from scratch The target screen contains the following items Target Filters the target filters are used to create the target curve In many situations the target filters are automatically selected from the values entered in the bass management panels ...

Страница 31: ...for satellite speakers is 500 Hz to 2 5 kHz while for subwoofers the default range is 40Hz to 80 Hz However these values can be modified to suit your particular circumstances Low and High Target Freq these two frequencies restrict the range of the optimizer Any frequencies outside this range are excluded from the optimization process allowing you to limit the range of optimization Any filter eithe...

Страница 32: ... 002 4 dBu In 20 Hz 20 kHz Digital THD N 00002 20 dBFS 20 Hz 20 kHz Digital In Lock Range 44 1 kHz 192 kHz Frequency Response 10 Hz 22 kHz 0 1dB Lip Sync Delay 0 176 ms 48 kHz Channel Delay 0 27 ms 48 kHz Internal Processing Sample Rate 48 kHz 96 kHz Input power 90 to 240 V AC 50 60 Hz 42 watts Chassis 19 rack 1 U high Note All specifications are typical and subject to change without notice ...

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