iEQ Dual Channel Digital Graphic EQ/Limiter w/Type V™ NR and AFS ™ iEQ-15 iEQ-31 User Manual
IMPORTANT SAFETY INSTRUCTIONS WARNING FOR YOUR PROTECTION READ THE FOLLOWING: KEEP THESE INSTRUCTIONS HEED ALL WARNINGS The symbols shown above are internationally accepted symbols that warn of potential hazards with electrical products. The lightning flash with arrowpoint in an equilateral triangle means that there are dangerous voltages present within the unit. The exclamation point in an equilateral triangle indicates that it is necessary for the user to refer to the owner’s manual.
IMPORTANT SAFETY INSTRUCTIONS ELECTROMAGNETIC COMPATIBILITY This device complies with part 15 of the FCC Rules and the Product Specifications noted on the Declaration of Conformity. Operation is subject to the following two conditions: • this device may not cause harmful interference, and • t his device must accept any interference received, including interference that may cause undesired operation. Operation of this unit within significant electromagnetic fields should be avoided.
Table Of Contents iEQ Introduction Defining the iEQ �������������������������������������������������������������������������������������������������������������������������������������������������������� 2 Service Contact Information ������������������������������������������������������������������������������������������������������������������������������������ 3 Warranty ��������������������������������������������������������������������������������������������������������������������������������
iEQ iEQ USER MANUAL
Introduction iEQ Congratulations on your purchase of the dbx iEQ Series Graphic Equalizer/Limiter with Type V™ Noise Reduction and AFS™. With an EQ heritage that has produced countless industry standard patents and dates back more than 30 years, the dbx iEQ-15 and iEQ-31 easily live up to the dbx legacy of uncompromised sonic integrity.
iEQ Introduction Service Contact Information If you require technical support, contact dbx Technical Support. Be prepared to accurately describe the problem. Know the serial number of your device - this is printed on a sticker attached to the chassis. If you have not already taken the time to fill out your warranty registration card and send it in, please do so now. You may also register online at www.dbxpro.com. Before you return a product to the factory for service, we recommend you refer to the manual.
Installation iEQ Installation Recommendations FOR RACK MOUNT USE ONLY - Install the iEQ in your rack with the provided rack screws. When installed in a rack, the unit should be positioned with enough room (at least one 1U above the unit and 1U below the unit) to allow proper ventilation. The iEQ should not be mounted above or below anything that generates excessive heat. Ambient temperatures should not exceed 1130F (450C) when equipment is in use.
iEQ Rear / Front Panels Rear Panel iEQ-15 - dual channel 15 band graphic equalizer iEQ-31 - dual channel 31 band graphic equalizer Power Cord Receptacle Connects AC power to the equalizer. Power Switch Switches the power on and off. Always make audio connections with the power switch in the off position. Input Connectors Three types of input connectors are provided for input connections: female locking XLR type connectors, 1/4” tip-ring-sleeve phone jack connectors, and Euroblock.
Rear / Front Panels iEQ Front Panel iEQ-15 - dual channel 15 band graphic equalizer iEQ-31 - dual channel 31 band graphic equalizer Input Gain Control This control sets the signal level to the equalizer. It is capable of -12dB to +12dB of gain. Its affect is apparent by viewing the OUTPUT LEVEL bar graph. EQ Bypass Button This button removes the graphic equalizer section from the signal path. The BYPASS button does not, however, affect the INPUT GAIN, AFS, PeakStopPlus® LIMITER , or LOW CUT filters.
iEQ Rear / Front Panels PeakStopPlus® Limiter Control This control engages the PeakStopPlus™ limiter. It sets the threshold level at which ∞:1 gain reduction will begin to occur. It is capable of a range of 0dBu through “off” (+20dBu). When the threshold control is set to “off”, the limiter is effectively disabled, and no gain reduction will occur. AFS™ (Advanced Feedback Suppression) Button This button engages the AFS function of the iEQ-15 and iEQ-31 and clears the AFS filters.
iEQ Operation Power-Up Modes The iEQ Series EQs provide the ability to lock the front panel controls and edit how AFS will function. These changes are performed in the Power-Up Mode menus and are described below. IMPORTANT! It is recommended that you power off your amplifiers or turn down their attenuators before power cycling the iEQ and performing the following Power-Up Mode changes. To enter, navigate, and edit options within these Power-Up Mode menus, follow these steps: 1.
iEQ Power Up Menu Liv e Liv eF ilte rL ift Tim e F Liv ilter e F Li ft i Liv lter Off e F Lift ilte S r L hort ift Lo ng Operation CHANNEL 1 CHANNEL 2 Live Filter Lift Time Menu • Live Filter Lift Off: Selecting this option will disable the Live Filter Lift feature. • Live Filter Lift Short: This option sets the Live Filter Lift Time to 10 minutes, at which time the AFS algorithm will determine if the filter needs to remain or if it can be cleared.
Operation iEQ AFS™ First introduced in the DriveRack PA and 260 processors, the iEQ-15 and iEQ-31 both utilize dbx’s proprietary AFS™ (Advanced Feedback Suppression) algorithm, providing effortless feedback elimination. AFS uses Precision Frequency Detection and state-of-the-art processing to pinpoint, with more accuracy, the exact frequency where feedback occurs. In the past, graphic equalizers were used to eliminate feedback from a system.
iEQ Operation Quick Start This section explains the procedure for using the iEQ Series EQs for tuning the left and right front of house speakers in a live sound system. Using the iEQ in AFS Normal Mode Use this method when you do not intend to initially ring out the sound system before use. This is the fastest and easiest way to utilize AFS. 1. Configure the iEQ for AFS Normal Mode operation within the Power-Up Mode menu as described in the “Power-Up Modes” section of this manual. 2.
Technical Information iEQ Using the iEQ in AFS 6-Fixed/6-Live Mode This mode provides 6 Fixed filters and 6 Live filters. This mode is well suited for permanent installations. Use this mode when you intend to ring out the system before use (using the Fixed filters) to eliminate the most prevalent feedback frequencies. 6 Live filters can then be utilized for feedback suppression control during the performance. 1.
iEQ Technical Information Factory Hard Reset In the event that you experience peculiar behavior with the iEQ or would like to set the Power-Up Mode settings back to their factory default state, please perform the following Factory Hard Reset procedure: • Power on the unit while pressing and holding the CHANNEL 2 button until the CHANNEL 2 meters display the LED pattern shown below, then release the button.
Inputs RF Filter Input Input Gain 14 iEQ User Manual Limiter Front Panel Slide Pots TYPE IV™ ...
iEQ Technical Information Specifications Inputs Connectors: Type: Impedance: Max Input Level: CMRR: 1/4” TRS, female XLR (pin 2 hot), and Euroblock Electronically balanced/unbalanced, RF filtered Balanced 40kΩ, unbalanced 20kΩ +22dBu balanced or unbalanced >40dB, typically >55dB at 1kHz Outputs Connectors: 1/4” TRS, male XLR (pin 2 hot), and Euroblock Type: Balanced/unbalanced, RF filtered Impedance: Balanced 120Ω, unbalanced 60Ω Max Output Level: +20dBu balanced/unbalanced into 2kΩ or gr
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