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 FOLLOW ALL INSTRUCTIONS potential hazards with electrical products. The lightning flash with arrowpoint in the apparatus shall not be exposed to dripping or splashing liquid and no object filled an equilateral triangle means that there are dangerous voltages present within with liquid, such as vases, shall be placed on the apparatus.
8760 S. Sandy Parkway Sandy, Utah 84070, USA Date: May 31, 2012 European Contact: Your local dbx Sales and Service Office or Harman Signal Processing 8760 South Sandy Parkway Sandy, Utah...
® The iEQ-15 is a 2 channel, 2/3 octave EQ, providing 15 bands of EQ per channel� The iEQ-31 is a 2 channel, 1/3 octave EQ, providing 31 bands of EQ per channel� The iEQ-15 and iEQ-31 also offer +12 dB input gain range, switchable +6 or +15dB boost/cut range, 40mm faders, XLR, 1/4’’...
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 causes beyond their control�...
Installation 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�...
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�...
Rear / Front Panels 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�...
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AFS™ (Advanced Feedback Suppression) Button This button engages the AFS function of the iEQ-15 and iEQ-31 and clears the AFS filters� If AFS is off, the filters are bypassed and the algorithm is halted (the filters are not updated)� If AFS is on, the filters are active�...
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�...
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Operation CHANNEL 1 CHANNEL 2 Power Up Menu 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 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�...
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�...
Technical Information 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�...
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 <AFS> button until the CHANNEL 2 meters display the LED pattern shown below, then release the button�...