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dbx IEM User Manual

In-ear monitor processor
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In-Ear Monitor
PROCESSOR
User Manual

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  • Page 1 ® In-Ear Monitor PROCESSOR User Manual...
  • Page 2 IMPORTANT SAFETY INSTRUCTIONS WARNING FOR YOUR PROTECTION C A U T I O N PLEASE READ THE FOLLOWING: KEEP THESE INSTRUCTIONS R I S K O F E L E C T R I C S H O C K D O N O T O P E N A T T E N T I O N : HEED ALL WARNINGS...
  • Page 3 Sandy, Utah 84070, USA ference, and February 15, 2001 • this device must accept any interference European Contact: Your Local dbx Sales and Service received, including interference that may Office or cause undesired operation. Harman Music Group 8760 South Sandy Parkway...

  • Page 4: Table Of Contents

    5.7 A/D Calibrate..........30 Section 2 - Navigation Section 6 - Application Guide 2.1 Multiband Compressor........8 2.2 Multiband Limiter ..........9 6.1 Mixer to IEM to In-Ear Transmitter ....32 2.3 EQ ..............10 6.2 Mixer to Xover to IEM ........33 2.4 X-Over.............10 2.5 Stereo Adjust...........11 Appendix 2.6 Reverb .............11...
  • Page 5 INTRODUCTION INTRO CUSTOMER SERVICE INFO What is IEM? WARRANTY INFO ®...

  • Page 6: Defining The Iem

    Type IV™ conversion system, and for good measure, we have even raised the playing field by including custom reverb algorithms using Lexicon™ technology. The IEM from dbx Professional Products is a unit that is certain to take In-Ear Monitor processing to the next level.

  • Page 7: Warranty

    In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to caus- es beyond their control.
  • Page 8 Introduction ® IEM User Manual...
  • Page 9 Section 1 Getting Started ®...

  • Page 10: Section 1 - Getting Started

    These connectors provide full MIDI functionality to the IEM. The Out/Thru jack allows you to use the IEM at any point in the MIDI chain. For a complete guide to all the MIDI and SYSEX functionality of the IEM, see Section 3: Software Operations.
  • Page 11 After you have chosen a program, you may want to change some of the parameters to meet your specific needs. One of the most useful tools available in the IEM for setting up a proper compression curve is the curve window. In the curve window you can see the combined effects of dynamics-related parameters expressed in a graphical format.

  • Page 12: Signal Path

    The easiest way of setting up the multiband compressor in IEM is to use the monitor in con- junction with the crossover and the compressor/limiter.
  • Page 13 COMPRESSOR button allows access to the next band. As you have seen, by using the multiband compressor/limiter along with the other tools avail- able in the IEM Processor, you will be able to create a realistic sounding, and more controlled in-ear monitor mix.
  • Page 14 Section 1 Getting Started ® IEM User Manual...
  • Page 15 Section 2 NAVIGATION ®...

  • Page 16: Section 2 - Navigation

    Navigation NAVIGATION Control of each of the bands within the IEM’s multiband dynamic modules is made possible in two different ways. You may either use the “All page” or individual band adjustments. The “All page” is signified by a large “All” seen where the program number would normally be.

  • Page 17: Multiband Limiter

    Release desired band Band 2 Attack OverEasy® On/Off Band Threshold Hold Auto On/Off Release Band 3 Attack OverEasy® On/Off Band Threshold Hold Auto On/Off Release Band 4 Attack OverEasy® On/Off Band Threshold Hold Auto On/Off Release ® IEM User Manual...

  • Page 18: Xover

    Level Level Level Level EQ and XOver. Depress once to Edge 1 FC Edge 2 FC Edge 3 FC XOver access EQ and a Slope Slope Slope second time for XOver 2.4 Navigating the X-over Section ® IEM User Manual...

  • Page 19: Stereo Adjust

    M-S = 2.6 Navigating the REVERB section Navigate through the Pages by depressing "Next Page" or "Prev Page" successively until arriving at the desired Page Page 1 Page 2 Reverb Reverb Off/Type Spread REVERB Reverb Time Rolloff ® IEM User Manual...

  • Page 20: Peak Limiter

    A/D Cal Contrast DigIn Ch 1 Dump Setup Bulk Dump MIDI CH Clock AutoLoad BNC Freq DigIn Ch 2 MIDI CC # Sysex Ch MIDI Prg Type MtrSpeed Merge On/Off HighPass on/off MIDI CC Effect as Prg ® IEM User Manual...

  • Page 21: Section 3 - Software Operations

    Section 3 SOFTWARE SOFTWARE OPERATIONS ®...

  • Page 22: Fx Chain

    SOFTWARE This section explains how signals are routed, monitored, and controlled in the IEM. Changes that are made to the IEM’s dynamic processing can be monitored visually and aurally at sever- OPERATIONS al different points in the chain. Storing, and organizing user and factory programs in task spe- cific libraries is also covered in this section.

  • Page 23: The Bypass Function

    You will be given the option of placing your edited program anywhere within the user program table. 3.3 The Bypass Function Bypass To bypass the IEM, press and hold the BYPASS button for at least two seconds. All digital dynamics modules and reverb are rendered inactive. 3.4 Meters Analog Meters The IEM’s analog input meters show the signal after the input controls.
  • Page 24 OverEasy® mode of compression. (For a complete explanation of the OverEasy® parameter, see Section 4.) The third segment of the compressor meter is the plus (+) sign. It is blackened when the signal is being fully compressed at the ratio set by the Ratio Parameter. ® IEM User Manual...

  • Page 25: Monitor Outputs

    3.5 Monitor Outputs Monitoring separate bands is a useful and easily accomplished function in the IEM. By pressing the METER/MONITOR button twice you are able to access the monitor selection page. Use the DATA WHEEL to select at which point you would like to monitor. The headphone graphic and arrow change to show the point in the signal chain you are monitoring.
  • Page 26 Section 3 Software Operations ® IEM User Manual...

  • Page 27: Section 4 - Detailed Parameters

    Section 4 PARAMETERS DETAILED PARAMETERS ®...

  • Page 28: Multiband Compression

    OverEasy® 1-10 (per band) The point when the IEM (or any compressor) starts to compress is the "knee." When the IEM starts to reduce the level of a signal abruptly right as it passes over the threshold this is called "hard knee"...
  • Page 29 Threshold -60 to 0 dB (per band) Threshold is the signal level at which the IEM starts to compress. If the threshold is set to -10 dBFS, then any signal larger than -10 dBFS is compressed, while any signal that has a level lower than -10dBFS is left at the same level.

  • Page 30: Multiband Limiting

    Attack .01 to 200 m Sec (per band or global) This is the speed at which the IEM limiter starts to compress the signal once it has crossed the threshold. Set the attack time longer for lower frequency bands, and shorter for higher fre- quency bands.

  • Page 31: Peak Limiting

    4.4 EQ There are 5 bands of EQ on the IEM that can be used for something as subtle as sweetening a mix to drastic changes. Bands 1 and 5 are shelves while 2 through 4 are fully parametric.
  • Page 32 Level -12 to + 12 dB Amount of boost or cut. Adjustable in 1/2 dB steps. Band 5 FC 20.0 Hz to 20.0 kHz This controls the corner frequency for the high frequency shelving EQ band. ® IEM User Manual...

  • Page 33: Xover

    Amount of boost or cut. Adjustable in 1/2 dB steps. 4.5 XOver There are three crossover points on the IEM, creating 4 bands. Tuning them allows you to select which frequencies to process with which of the multiband dynamics processors. The IEM uses phase compensated, Butterworth 1st and 3rd order filters.
  • Page 34 RTC (Room Time Constant) 1.00 to 8.00 kHz The RTC parameter is used to simulate room absorbtion. Rolloff 1.00 to 8.00 kHz The Rolloff parameter is used to control the rolloff of the high frequencies at the output of the reverb. ® IEM User Manual...

  • Page 35: Section 5 - Utilities

    Section 5 UTILITIES UTILITIES ®...

  • Page 36: Misc

    Whereas, autoload ON will automatically load programs once they are selected. Meter speed This utility feature allows the user to set the speed of the various meters within the IEM. Speeds include: Low, Med and High. 5.2 MIDI Channels MIDI CH Selects which MIDI channel the IEM will receive program changes and CC’s on.

  • Page 37: Midi Program Changes

    5.4 MIDI Program Changes Program Changes: When the IEM is set to receive on one or all of the MIDI channels, it will recognize a Program Change command. If the number is legal (i.e., within the device's range of selectable programs) the IEM will respond by changing to the new program.
  • Page 38 “A/D CAL FAIL!” If this happens you should turn the IEM off then back on. If the problem persists, call dbx technical support at 1-801-568-7660 for assistance. Call after the unit is allowed to warm up to operating temperature (approx. 10 min- utes).
  • Page 39 Section 6 APPLICATIONS APPLICATION GUIDE ®...

  • Page 40: Section 6 - Application Guide

    6.1 Mixer to IEM Hardware 1. Connect the stereo mix output 1 and 2 from the mixer to Inputs 1 and 2 of the IEM 2. Connect Outputs 1 and 2 from the IEM to inputs 1 and 2 of the Wireless Transmitter.
  • Page 41 High/Mid or Fullrange outputs to the IEM, and the low outputs to the amplifier. 2. Connect Outputs 1 and 2 from the IEM to inputs 1 and 2 of the Wireless Transmitter. Software 1. Once signal is passing through the unit, adjust levels on the front panel of the IEM.
  • Page 42 Section 6 Application Guide ® ® IEM User Manual...

  • Page 43: Appendix

    Appendix ®...

  • Page 44: Hard & Soft Resets

    A.2 Change Default Startup Program The IEM turns on in "Program Mode" and is ready to use without any other keystrokes. The IEM "remembers" the last program number used, and stores that program number as the default startup program. Occasionally, you may wish to change this setting.

  • Page 45: B Type Iv™ White Paper

    Type IV™ not only exploits the wide linear dynamic range of today’s A/D con- verters, but also enhances it and extends the useable dynamic range beyond the linear range.
  • Page 46 Enter the dbx Type IV™ Conversion System. Like its related predecessor technologies—Type I™, Type II™, and Type III™—dbx Type IV™ succeeds in preserving the wide dynamic range of the original analog signal within a limit- ed dynamic range medium. Whereas Type I™ and Type II™ expand the dynamic range of analog tape and other limit- ed dynamic range media, and the simultaneous encode/decode process of Type III™...
  • Page 47 Another advantage of the logarithmic mapping of our dbx Type IV™ Conversion System is that it preserves the high-frequency detail of the signal in the overload region. Figs. 3a through 3d illustrate what happens when you over- load an A/D converter without Type IV™.
  • Page 48 TypeIV™ White Paper Amplitude Time Figure 3a - Signal Having Low and High Frequency Content Amplitude A/D Clip Level Time A/D Clip Level Figure 3b - Signal of Fig. 3a Going Beyond the A/D Clip Level ® ® IEM User Manual...
  • Page 49 The benefits of the dbx Type IV™ Conversion System can easily be heard by switching it in and out while lis- tening to signals with high-level peaks captured in the Type IV™ Over Region. You will notice an obvious audible dif- ference.

  • Page 50: C Relay Mute/Bypass Jumpers

    Disconnect mains power before servicing. IEM offers relay bypass/mute jumpers options. This feature is ideal for situations where power to unit is suddenly removed. The unit ships with the relay jumpers off (which will mute the signal if power is cut). The procedure for chang- ing these jumpers is as follows: 1) First, shut the unit off and disconnect the power cable.

  • Page 51: D Midi Sysex

    When zz = 6Ch Linked Program type is selected When zz = 6Dh Dual Mono Program type is selected When a Request One Program procedure is received, the IEM will respond with a Receive One Program procedure. Receive One Program (43h)
  • Page 52 Code for the Key Scan (note: there is only one byte, not two) The Receive Key Scan Code procedure is used to emulate a button press on the front panel of the IEM. See the Key Scan Code Maps for a list of Key Scan codes. The device will respond with a Receive Key Accepted procedure.
  • Page 53 MIDI SYSEX The Reset Device procedure causes the IEM to reboot the software as if the power had been turned off, and then back on. If edits have been made to the current program without saving, they will be lost.

  • Page 54: E Midi Cc Tables

    7 -> Linked IEM Parametric EQ Type cc 53 -> Linked Band3 Compressor On/Off cc 8 -> Linked IEM Parametric EQ Band1 Freq cc 54 -> Linked Band3 Compressor OverEasy cc 9 -> Linked IEM Parametric EQ Band1 Slope cc 55 ->...
  • Page 55 104-> Linked Stereo Adjust Stereo-Mono cc 105-> Linked IEM Parametric EQ On/Off cc 106-> Linked IEM Parametric EQ Type cc 107-> Linked IEM Parametric EQ Band1 Freq cc 108-> Linked IEM Parametric EQ Band1 Slope cc 109-> Linked IEM Parametric EQ Band1 Lvl cc 110->...

  • Page 56: F Factory Presets

    3) Rockin Buds 4) Small Hall 4) Small Hall 5) No Comp 5) No Comp 6) Large Hall 6) Large Hall 7) IEM No Verb 7) IEM No Verb 8) Acoustic 8) Acoustic 9) Room IEM 9) Room IEM 10) Heavy Comp 10) Heavy Comp ®...

  • Page 57: G Specifications

    5-Pin DIN MIDI Out/Thru Jack RS 232 port A-D System Performance A-D Conversion: 24-bit, dbx Type IV™ Conversion System Convertor Dynamic Range: 114 dB typical, A-weighted, 22 kHz bandwidth 112 dB typical, unweighted, 22 kHz bandwidth Type IV™ Dynamic Range:...
  • Page 58 ® A Harman International Company 8760 South Sandy Parkway Sandy, Utah 84070 Phone: (801) 568-7660 Fax (801) 568-7662 Int’l Fax: (801) 568-7583 Questions or comments? E-mail us at: customer@dbxpro.com or visit our World Wide Web home page at: www.dbxpro.com 18-0439-B...

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