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21

English  –

DELAY

There are some potential problems with the arrival of sound in systems utilizing multiple

loudspeakers.  The DP11EQ Delay is designed to solve two of these problems: remote speaker
alignment and phase cancellation.

Delay for Solving Remote Speaker Alignment Problems

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AMPLIFIER

AMPLIFIER

AMPLIFIER

AMPLIFIER

MIXER

MIXER

DP11EQ 
WITH DELAY

Problem:  Illustration A — Some larger sound systems may utilize loudspeaker fill systems.  One

loudspeaker may not be enough for a large hall because of power limitations, so a fill loudspeaker
may be placed farther in front of the main speaker to augment the sound from the main loudspeaker.
This may cause the sound from the fill loudspeaker to arrive at the listener earlier than that from the
main loudspeaker.  To the audience, it will seem like the sound is coming from the wrong place when
the sound from the fill loudspeaker arrives first.

Solution:  Illustration B — The delay in the DP11EQ can be used to solve this problem.  Place a

DP11EQ along the audio path to the amplifier of the fill loudspeaker, then set it to the proper amount of
delay.  The DP11EQ with Delay will hold that audio signal in memory, releasing it to the fill loudspeaker
only when it is in time with the sound from the main loudspeaker, so the sound from both loudspeakers
will arrive at the audience at the same time.  Now, the audience will perceive the sound coming from
the correct place.

Delay for Solving Phase Cancellation Problems

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AMPLIFIER

AMPLIFIER

AMPLIFIER

AMPLIFIER

MIXER

MIXER

DP11EQ 
WITH DELAY

Problem:  Illustration A — Phase cancellation can occur when two loudspeakers are near each

other but not precisely time aligned.  The two speakers can be seen in the illustration above.  The
waves represent the sound coming from each.  The sound waves coming from the main and remote
loudspeakers are out of phase.  Because they are out of phase, the sounds interfere with each other,
degrading audio quality.  The illustration above shows how sound waves cross, causing phase
cancellations.

Solution:  Illustration B — The DP11EQ Delay can be used to stall the signal to loudspeaker B

just long enough so that when it does come out, it is in phase with the sound from the loudspeaker A.
When in phase, the waves reinforce each other to maintain audio quality.  Illustration B shows how the
DP11EQ delay works in a sound system.

Summary of Contents for DP11EQ

Page 1: ...Model DP11EQ User s Guide 27A8630 Rev 2 E2006 Shure Incorporated DP11EQ Dynamics Processor Equalizer and Delay with Windows Software...

Page 2: ...English 17 DELAY English 21 SHURE LINK NETWORKS English 23 MAINTENANCE English 24 Scenes English 24 Settings English 25 Customizing Graph Colors English 25 Printing DP11EQ Settings English 26 Locking...

Page 3: ...Can be used with balanced or unbalanced outputs S No internal batteries Settings and DSP program stored in internal EEPROM S 4 dBu 10 dBV DIP switch selectable input and output levels S 80 MHz Motorol...

Page 4: ...is powered on Back Panel Power Connector with Integral Fuse Connects to AC power The fuse is located in the drawer below the connector 9 Pin RS 232 Port Connects the unit to a computer For use with D...

Page 5: ...gned a unique Device ID 0 through 15 DIP switches 1 through 4 on the rear panel are used to set the Device ID To change the Device ID align the switches according to the illustrations below The unit c...

Page 6: ...e Appendix C for descriptions of cable and connection information Main Amplifier The DP11EQ is most commonly placed between the main output of a mixer and the input of a power amplifier At the main ou...

Page 7: ...e insert to process the signal for that microphone only This is a common location for an leveler LINE OUT LINE IN LINE OUT LINE OUT MAIN CHANNEL 1 IN CHANNEL 1 INSERT DP11EQ LINE IN MIXER POWER AMPLIF...

Page 8: ...Use the proper cable purchased separately For RS 232 cable diagrams see Appendix C Cables and Connectors TO DP11EQ RS 232 CABLE 9 PIN MALE TO COMPUTER RS 232 CONNECTOR 1 Connect the 9 pin plug male o...

Page 9: ...ick on the COM port option of the drop down menu 4 In the Serial Port Options window select an available COM port on the computer 5 Click on the OK button NOTE The COM port selection is saved in the D...

Page 10: ...ou to adjust parameters Near the top there is a Dynamic Gain meter corresponding to the one on the front panel of the DP11EQ There are also Snapshot buttons for storing and viewing an original respons...

Page 11: ...s meter displays the net gain of the unit CONNECT Button and LED This button brings the DP11EQ plugged into the computer online along with any other devices networked via Shure Link When connected the...

Page 12: ...n this meter to activate Dynamics Transfer Curve Graph This displays the effect of all dynamics processing on the input signal Dynamic Input Output Meter Embedded in the graph is a meter which display...

Page 13: ...a gain change to take full effect once a threshold has been crossed To adjust the attack click on the and buttons of the ATTACK box or type the desired value in the edit box RATIO The Ratio determines...

Page 14: ...eases below the threshold GATE HOLD The gate hold determines the amount of time the DP11EQ sustains the gate after the levels have fallen below the threshold The gate hold is a time duration that come...

Page 15: ...y the ratio or the maximum gain line maximum gain 12 dB To prevent the possibility of gain increase in a feedback prone system the AGC should be used with the threshold and hinge at the same settings...

Page 16: ...ess of the slope of the ratio setting The hard knee works aggressively applying the compression slope immediately once the signal rises above the threshold The soft knee gradually applies compression...

Page 17: ...ect equipment from the loudest dynamic bursts which could potentially damage equipment the attack is always instant the ratio always infinite and the decay fast so Threshold is the only parameter nece...

Page 18: ...ther or not both equalizers are used For instance 9 parametric filters are available if all dynamics processes are on except leveler and peak limiter but using only one equalizer If both equalizers ar...

Page 19: ...to the selected filter Clicking on the and buttons will adjust the gain of the filter With the high and low shelving filters the response will shelve at the level of the gain setting However once the...

Page 20: ...ere have been no changes to the curve since the snapshot was originally taken it might appear as though no snapshot has been taken This happens because the snapshot and the current curve are exactly t...

Page 21: ...click and drag the OUTPUT slider Click on the IN OUT level meters to activate or 1 Click on Options in the main menu bar of the Main Control Panel 2 Click on Meters 3 Click on Display Level Meters opt...

Page 22: ...the proper amount of delay The DP11EQ with Delay will hold that audio signal in memory releasing it to the fill loudspeaker only when it is in time with the sound from the main loudspeaker so the sou...

Page 23: ...lower the distance 5 Measure the air temperature 6 Under the Air temperature field click on the Celsius or Fahrenheit dot to select the desired type 7 In the Air temperature box click on the and butt...

Page 24: ...the computer NOTE Although a standard MIDI cable can be used to link units Shure Link is not MIDI compatible Shure Link Options Shure Link Device Menu The Device menu displays the following informati...

Page 25: ...ombination of settings these settings can be stored on disk as a Scene Although the DP11EQ automatically saves the current scene in internal memory other scenes can be saved to disk Scenes are useful...

Page 26: ...disk and recall them to another DP11EQ To recall settings 1 Click on File in the menu bar of the current panel 2 Select Recall Settings 3 On the Settings window select the desired settings name 4 Clic...

Page 27: ...20 bit resolution Voltage Gain 1 dB 1dB power off 12 dB 2 dB input 10 dBV output 4 dBu 12 dB 2 dB input 4 dBu output 10 dBv 0 dB 2 dB equal input and output sensitivities Impedance Input 47 k 20 actu...

Page 28: ...ized under Verification provision of FCC Part 15 as a Class B Digital Device DP11EQ E Conforms to European Union Directives eligible to bear CE marking Meets European Union Low Voltage Requirements VD...

Page 29: ...ith the 8 supplied screws Dual Mounted Units DATA DATA 1 Align two units side by side so that the front panels both face the same direction 2 Place the supplied straddle bars in the recesses on the to...

Page 30: ...Output Level 4 dBu 4 output level 10 dBV 10 output level 4 dBu 4 output level 10 dBV 10 output level Maximum Output Level 18 dBu 4 output level 6 dBV 10 output level 18 dBu 4 output level 6 dBV 10 ou...

Page 31: ...r Sub Return S Mixer Send to DP11EQ Input S Mixer Sub Send to DP11EQ Input SLEEVE TIP SLEEVE TIP 1 4 in Balanced to 1 4 in Unbalanced TYPICAL APPLICATIONS S Mixer Line Out to DP11EQ Input S DP11EQ Out...

Page 32: ...TIONS S Mixer Line Out to DP11EQ Input S DP11EQ Output to Amplifier Input S DP11EQ Output to Mixer Sub Return S Mixer Send to DP11EQ Input S Mixer Sub Send to DP11EQ Input PIN 1 PIN 2 PIN 3 SLEEVE TIP...

Page 33: ...ble FUNCTION RX TX DTR GND DSR RTS CTS 9 PIN CONNECTOR PIN 1 2 3 4 5 6 7 8 9 25 PIN CONNECTOR PIN 8 3 2 20 7 6 4 5 22 9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1 5 4 3 2 1 25 PIN FEMALE TO COMPUTER 9 PIN MALE...

Page 34: ...HT controls from right to left PRESS a selected button SAVE a scene RECALL a scene PRINT the settings of the current unit EXIT the program FINE ADJUST a parameter COARSE ADJUST a filter or slider UNDO...

Page 35: ...a selected parametric filter CREATE a new parametric filter FINE ADJUST the FREQUENCY of a parametric filter COARSE ADJUST the FREQUENCY of a parametric filter FINE ADJUST the GAIN of a parametric fil...

Page 36: ...Caribbean 5800 W Touhy Avenue Niles IL 60714 4608 U S A Phone 847 600 2000 U S Fax 847 600 1212 Int l Fax 847 600 6446 Europe Middle East Africa Shure Europe GmbH Phone 49 7131 72140 Fax 49 7131 7214...

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