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AMC DSP 88, User Manual

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AMC DSP 88 User Manual Download Page 11

 

 

TYPH:

 

The  3  available  filter  types  for  the  high  frequency  crossover  point  (low  pass)  are:  Butterworth, 
Linkwitz Riley or Bessel. 

 

 

FRQH:

 

The  filter  cut-off  frequency  for  the  high  frequency  crossover  point  (low  pass)  ranges  from  20  to 
30kHz in either 1Hz steps or 1/36 octave steps. The frequency steps can be selected in the system 
menu. 

 

 

 

SLPH:

 

The filter slope for high frequency crossover point (low pass) ranges from 6 to 48dB/octave. If the 
selected filter type is Linkwitz Riley, the available slopes are 12, 24, 36 or 48 dB/octave. 

 
 
 

 

 
 
 
 
 
 
 
 

Summary of Contents for DSP 88

Page 1: ......

Page 2: ...devices including amplifiers that produce heat 6 The product should be connected to a power supply that is described in the operating instructions or are marked on the product Replace the fuse only with one of the specified type size and correct rating 7 The power supply cord should be undamaged and never share an outlet or extension cord with other devices so that the outlet or extension cord s p...

Page 3: ...s 4 Operation Front panel 5 Rear panel 5 Function description 6 Powering up the device 7 Operating the channel menus 8 Operating the system menus 13 Quick Reference 18 PC Control Software 19 Firmware upgrade 23 Specifications General specifications 24 ...

Page 4: ... on the front panel or with the intuitive AMC DSP Software Control accessed via the RS 232 USB or Ethernet interface Software upgrade for CPU and DSP via PC keeps the device current with newly developed algorithms and functions once available Multiple setup storage and system security complete this professional package Features Up to 8 inputs and 8 outputs with flexible routing 40 bit floating poi...

Page 5: ...l button 4 Audio signal meter 5 Channel menu LED 6 LCD display 7 Menu buttons 8 Rotary selector Rear Panel 1 Power connector with power switch and AC fuse T2 5AL 250V 2 Ethernet connector 3 Balanced universal Phoenix outputs 4 Balanced universal Phoenix inputs ...

Page 6: ... for data modification Peak Level LED Peak LED indicates the current peak level of the Signal Signal 12dB 6dB 3dB Over Limit The Input Limit LED references to the device s maximum headroom The Output Limit LED references to the threshold of the output limiter LCD Display shows all the necessary information to control the unit Menu Buttons There are 6 menu keys Menu Go to previous menu screen Holdi...

Page 7: ...put The device s output stage employs the balanced impedance topology Powering up the device After powering up the unit the following initialization screen is displayed on the LCD The initialization process takes several seconds and during that period the unit boots and displays the device model and firmware version After the initialization process is finished the XP displays its main screen The s...

Page 8: ...he linked channels as well To cancel the linking simply deselect the desired channel while the Menu or Menu key is still pressed or just press the Exit key to deselect all channels Input microphone gain The level or gain ranges from 0dB to 45dB in 3dB steps This level will only have an affect on the input channel when MIC Input is selected from the System Menu Input output signal LEVEL The level o...

Page 9: ... EQ center frequency ranges from 20Hz to 30kHz in either 1Hz steps or 1 36 octave steps The frequency steps can be selected in the system menu BW The EQ bandwidth ranges from 0 02 to 3 61 octaves in steps of 0 01 octave The equivalent Q value automatically shows besides the octave value For 1st degree all pass AP 1 filter the bandwidth sets the phase shift at the centre frequency This phase shift ...

Page 10: ... the entire GEQ for this channel Input output crossover TYPL The 3 available filter types for the low frequency crossover point high pass are Butterworth Linkwitz Riley or Bessel FRQL The filter cuts off frequency for the low frequency crossover point high pass ranges from 20 to 30kHz in either 1Hz steps or 1 36 octave steps The frequency steps can be selected in the System s Menu SLPL The filter ...

Page 11: ...for the high frequency crossover point low pass ranges from 20 to 30kHz in either 1Hz steps or 1 36 octave steps The frequency steps can be selected in the system menu SLPH The filter slope for high frequency crossover point low pass ranges from 6 to 48dB octave If the selected filter type is Linkwitz Riley the available slopes are 12 24 36 or 48 dB octave ...

Page 12: ... 1 to 100ms in 1ms steps RELEASE The compressor release s time can be set at 2X 4X 8X 16X or 32X the attack time RATIO The compressor ratio is the slope in which the signal is compressed It ranges from 1 1 to 1 40 Input output channel name NAME A 6 characters name can be assigned to each channel Output Limiter THRESH The limiter threshold ranges from 20 to 20dBu in 0 5dB steps ...

Page 13: ...e for the current output channel Operating the system menus The system menus allow the user to control and change parameters that are related to the system behavior and general operation It can be accessed by pressing the Sys key in the main menu when no input output or system menu is activated All system menus require pressing the enter key to confirm and save the settings Preset recall P1 The DS...

Page 14: ...ers can be assigned to each program MIC settings IN1 The user can choose between Line input or MIC input For MIC input the input will receive a 30dB gain Each input channel can be selected individually Phantom power The optional microphone preamp also comes with 48 V phantom power which can also be enabled or disabled per channel in this menu Copy channels Copy channels from the source to the targ...

Page 15: ...can be 36 steps octave or All Frequencies 1 Hz resolution DELAY UNIT This sets the time unit for input and output delay to ms ft or m Ethernet settings The network settings are separated into 3 menus Eth IP An unique IP address should be assigned to each unit in the network Eth GW The gateway address of the network Usually this should be the IP address of your router switch hub address ...

Page 16: ... left unchanged for most users NETWORK ID This control assigns a network ID from 0 to 60000 to the unit This ID is used for future network expansion only please leave it at 0 Security lock and unlock The password is 4 characters in length The factory default of a new unit does not require a password The device can be protected for unauthorized parameter and or system abuse The security settings ca...

Page 17: ... untouched ISO settings noise gate This internal system optimizer gate reduces ground floor noise if no signal is present If unwanted noise gate effects are audible on low sound levels it can be switched to bypass mode INFO This menu contains 3 info screens The first screen displays the device s name The second screen displays the Firmware version ...

Page 18: ...the security code When no password is set the factory default code is 11110000 When another combination of characters is displayed a password is set in the device and certain functions are disabled for the user to modify Quick reference ...

Page 19: ...nstallation of additional driver The user is given an option to install it during the installation of AMC DSP Software Control and if the user did not install it at that time they may choose to do so by running the USB driver installer from the provided software AMC DSP Software Control is compatible with Microsoft XP Vista and Microsoft Windows 7 The software will also work if using Boot camp on ...

Page 20: ...t in window below A DOS prompt window will appear Type ipconfig when ready and press enter This brings up all the information required to setup the Ethernet connection Return to the main page of the AMC DSP Software Control and click Device 1 online The main window for that specific device appears ...

Page 21: ...re that you enter the information in to the fields correctly and in the right order Please note To avoid IP conflicts between PC and device the last field of the Device Address must be an unique number between the 1 and 254 Every computer DSP 88 device and all other network devices should have their own number with no duplication of addresses anywhere on the network Please make note of the unit s ...

Page 22: ...s previously the configuration steps simply allocated an IP address to the device s network card using the USB connection After copying the IP address entered earlier in the Device Setup window please confirm the changes by clicking OK You now be prompted to restart AMC DSP Software Control before the changes take effect Confirm this instruction by clicking OK and then quit AMC DSP Software Contro...

Page 23: ... and connect without providing a hard wired connection Firmware upgrade Please note It is not possible to do Firmware updates over the Ethernet connection only via Serial Port or USB To begin the upgrade ensure that you are connected to the device click Upgrade and then select Firmware Two pop up screens appears and they need to be confirmed by clicking Yes After accepting these you will be asked ...

Page 24: ... of the main screen a progress bar will appear When the upload is finished you be prompted to switch the unit OFF and then ON again This is necessary so that the device s EPROM can be reprogrammed with the new Firmware Please note Do not interrupt this process It may cause damage to the EPROM ...

Page 25: ...LCD Level meters 5 segment LED Buttons Mute Edit Controls Menu Controls Dial encoder Embedded Thumb Wheel Connectors Analog inputs 3 pin Female XLR7 Analog outputs 3 pin Male XLR8 RS 232 Female DB 9 USB Type B Power Standard IEC Socket General Power 90 240 VAC 50 60Hz Dimensions 19 x1 75 x9 483x44x229 mm Weight 10 lbs 4 5 kg Audio control parameters Mic gain 0to 45dB in 3dB steps Gain 40 to 15dB i...

Page 26: ...e 2 to 32X the attack time System parameters No of presets 30 Program names 12 character length Delay units ms ft m Frequency modes 36 steps oct 1Hz resolution The specifications above are correct at the time of printing of this manual For improvement purposes all specifications for this unit including design and appearance are subject to change without prior notice ...

Page 27: ...___________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ____________________...

Page 28: ...AMC is a registered trademark of AMC Baltic www amcpro eu ...

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