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 Installation ........................................................................... 
Default Control Settings  ............................................................ 
Cleaning .................................................................................... 
Interfacing the Model EQ16  ...................................................... 
 

Things that can be interfaced ............................................... 

 

Connecting to a balanced output .......................................... 

 

Connecting to a balanced input ............................................ 

      Things that cannot be connected...........................................    
Connecting to a Mixer ................................................................ 
3 Popular Mixers ........................................................................

 

 Speck 

Electronics 

Xtramix................................................... 

      Samson MPL 2242 ............................................................... 
      Mackie CR-1604 ..................................................................

 

 
 

 
General .......................................................................................

 

Basic Theory of Equalizers......................................................... 
      Low-pass filter...................................................................... 
      High-pass filter ..................................................................... 
      Bandpass filter ......................................................................

 

 
Front Panel Controls

 ...............................................................

 

      General .................................................................................       
      Frequency sweep ..................................................................

 

      Boost/cut............................................................................... 
      Bandwidth ............................................................................

 

Rear Panel

 

Connectors

............................................................. 

       
Headroom and Boost/Cut Explained .......................................... 
 
 
 
General ...................................................................................... 
 Start 

simple 

......................................................................... 

Audio Cable ............................................................................... 
 

Multipair wire harnesses  ..................................................... 

Connectors ................................................................................. 
Proper AC Grounding ................................................................ 
 

Quality AC system  .............................................................. 

 AC 

distribution 

.................................................................... 

 

Clock noise and AC  ............................................................ 

 

Safety earth connection  ....................................................... 

 

Electronics earth .................................................................. 

Proper Audio Grounding and Shielding  .................................... 
EMI and RFI .............................................................................. 
 

Sources of EMI  ................................................................... 

 Reducing 

EMI 

..................................................................... 

 

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Chapter 4  Operation 

iv

 

Chapter 5  Wiring and Other 

          

                    Contents 

Содержание EQ16-16

Страница 1: ...MODEL EQ16 16 CHANNEL 3 BAND PARAMETRIC EQUALIZER Model EQ16 16 Model EQ16 32 Reference Manual speck electronics...

Страница 2: ...resulting from improper installation alteration or unauthorized parts or repairs If the product is modified by the customer without permission the customer agrees to pay for parts and labor necessary...

Страница 3: ...Environmental Considerations Grounding Rack grounding Repacking for Shipment General Mechanical Installation Physical Placement of Adjacent Equipment Power Supply Mounting location Configuring the AC...

Страница 4: ...ss filter Front Panel Controls General Frequency sweep Boost cut Bandwidth Rear Panel Connectors Headroom and Boost Cut Explained General Start simple Audio Cable Multipair wire harnesses Connectors P...

Страница 5: ...gh the grounding conductor of the power cord To avoid electrical shock plug the power cord into a properly wired receptacle before making any audio connection to the equalizer A protective ground conn...

Страница 6: ...Figure 1b Rear Panel Layout 2 Figure 1a Front Panel Layout Chapter 1 Introduction Section...

Страница 7: ...y available recording mixers that lack the complete 3 sweepable bands of the Model EQ16 or lack equalization altogether The Model EQ16 will accept a wide variety of signal levels From the wide range o...

Страница 8: ...a standard 19 equipment rack these adapters must be mounted to the left and right sides of the mixer 4 CAUTION IMPORTANT ALWAYS CHECK THE PROPER OPERATING VOLTAGE BEFORE OPERATING THE MODEL USE ONLY T...

Страница 9: ...by the steel chassis installation should nevertheless be planned to avoid locating it or any low level audio equipment immediately adjacent to power amplifiers power supplies or any source of electrom...

Страница 10: ...o the product identifying the owner and indicating the service or repair to be accomplished Include the model number and serial number of the product Place the product in the original container if ava...

Страница 11: ...use of the front panel controls Any device that emits a high EMI Electro Magnetic Interference or RFI Radio Frequency Interference energy field should be treated with suspicion EMI is considered any...

Страница 12: ...qualizer It is recommended that it be installed in the rear of the equipment rack providing that it remains at a reasonable distance from the audio equipment and cables and has adequate ventilation Th...

Страница 13: ...o the Model EQ16 make certain the power supply is not plugged in The power supply interface cable is a 3 conductor wire with a square plug on each end Do not attempt to extend or modify this cable Any...

Страница 14: ...assis with the 6 screws and tighten Before any attempt is made to operate the EQ16 it would be a good idea to set all the controls to their neutral positions This gives you a reference point to work f...

Страница 15: ...of the EQ16 32 stereo version may be utilized as mono channel by simply connecting to the left mono input and left mono output jacks Connections to each equalizer channel should be made with standard...

Страница 16: ...gain The EQ16 will operate with line input levels from 30 dBu to a maximum of 28 dBu See Chapter 4 for a more complete explanation of operating levels When connecting the EQ16 to an audio mixer it is...

Страница 17: ...at the other ends See figure 5 When patch points are not available such is the case with many smaller mixers the source signal synth sampler or recorder may be connected directly to the inputs of the...

Страница 18: ...TRS to 1 4 TRS audio cable is required for each EQ Out to Xtramix In connection to be made If the EQ16 32 is used it would require 32 cables for connection to the Xtramix The EQ16 may also be interfa...

Страница 19: ...15 Figure 6 Speck Xtramix Application 1 Chapter 3 Installation Section...

Страница 20: ...16 Figure 7 Speck Xtramix Application 2 Chapter 3 Installation Section...

Страница 21: ...y signals The crossover point that low frequencies pass through can be either fixed at a specific point or variable A high pass filter is a circuit that passes all high frequency signals and rejects l...

Страница 22: ...requency sweep control that is calibrated in frequency and a boost cut control that is calibrated in decibels Each channel also has an EQ bypass switch and associated LED When this switch is in the ou...

Страница 23: ...19 Figure 10 Equalizer Channel Chapter 4 Operation Section...

Страница 24: ...lly clockwise In addition to the ability to contour high band audio the high band controls can reduce hiss that is present on low frequency information If there is high frequency hiss or digital noise...

Страница 25: ...lly counterclockwise to 500Hz fully clockwise In addition to the ability to contour low band audio the low frequency controls may be used to reduce or eliminate low frequency hum or buzz Low hum is ty...

Страница 26: ...22 Figure 11 Equalizer Rear Panel Chapter 4 Operation Section...

Страница 27: ...to connect to a mixer s channel insert jack See Y Cable in Figure 5 This output utilizes a standard 1 4 Tip Ring Sleeve TRS balanced jack If you have the EQ16 16 there is a single output jack If you h...

Страница 28: ...ed The preceding statements only apply to the frequency s that have been selected with the respective frequency sweep controls When the EQ bypass switch is disabled the maximum output of the EQ16 is o...

Страница 29: ...onnected to a mixer s insert points the level to the input of the EQ16 is adjusted by the controls of the mixer s input channel When equalization is accentuated as part of an integrated mixing system...

Страница 30: ...ower amp and then add one signal to the mixer at a time carefully listening and monitoring your progress If a problem arises such as a buzz hum intermittent signal or nonexistent signal stop at that p...

Страница 31: ...nt When using a larger rack system it is recommended that a dedicated and isolated AC service be provided This service should have its own AC wires isolated receptacle and breaker and not be shared wi...

Страница 32: ...That will most likely be your audio equipment and would result in unwanted buzzes or hums In order for any audio signal such as a synth signal to get from the synth to the mixer it requires a cable w...

Страница 33: ...ed by other electronic devices There are natural and man made sources of EMI that you can t do anything about These sources include radio TV and radar transmitters as well as motors lights and compute...

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