dbx Pro user manual DriveRack PX

Page 44

Section A

Appendix

DriveRack® PX

of that output (refer to section 5.5 -- Also note that if you turn the outputs down on the DriveRack PX, you should turn up the level on the powered speaker until the clip LED lights again). You have just maximized the gain through your system. These setting should give you maximum gain without clipping, another way of say this is that when the output of your mixer is clipping you will also be at the clip point of your powered speakers.

Once you have found the clip point of your powered speakers, you can mark this position and turn the powered speakers back up to the point where they are clipping. You can now use the output limiters in the DriveRack PX to protect the powered speaker from clipping no matter what you do at the mixer. With the powered speakers clipping, now go to the Limiter page of the DriveRack PX and turn on the limiter for each output. Make sure that the threshold is all the way up to +20dB. Now slowly reduce the threshold until the clip indicator of the powered speaker turns off. You have successfully set the output limiter up and the powered speaker will not be able to go into clipping no matter what the input is. You should now proceed

to the next output and go through the same process. If you are using a sine wave to create clipping in your powered speaker you should make sure that the sine wave is within the frequency range of the output band that you are working with. Once all the limiters are set up you can now turn the powered speakers back down to the gain maximized position. The Wizard will automatically set your limiters based on your choice of powered speaker. Because of component variances within the powered speaker circuitry, you may need to adjust the limiter settings by a few dB after running the Wizard to ensure that they are set correctly.

40

®

Page 43 Page 45
Image 44
Page 43 Page 45
Contents Powered Speaker Optimizer Important Safety Information Electromagnetic Compatibility DriveRack PX Introduction Defining the DriveRack PXService Contact Info Warranty Front Panel Connections Getting StartedRear Panel Connections Data Wheel LCD DisplayFunction Buttons Stereo Input MetersConnections Signal Path Block DiagramQuick Start Preset Store AFS Setup Wizard DriveRack PX WizardSub Speakers Auto Level Auto EQ Wizard Auto-EQ WizardAFS Wizard Music High Ultra Narrow Notch Fixed Filter Setup Done. In Live mode Button Array Overview Editing FunctionsBasic Navigation Modes Navigating the High-pass and Bandpass Filter Setup Section Navigating the Subharmonic SectionNavigating the Comp/Limiter Section Navigating the EQ SectionNavigating the Wizard Section Navigating the AFS SectionNavigating the Utility Section Navigating the Recall Section Navigating the Store SectionPreset Definition Navigating Factory PresetsSelecting Presets Operating FunctionsEditing Factory Presets Store Rock Venue AFS Automatic Feedback Suppression Detailed ParametersStereo Input Graphic EQ Mode Live or Fixed AFS On/OffClear Live/All Type Speech, Low Music, Medium Music and High MusicSubharmonic Synthesizer Compressor/Limiter Compressor On/OffOverEasy O Off to Threshold T -40 to +20dBuLimiter On/Off Ratio R 1.0 to Inf1Gain G -20 to +20 dB Filter Setup Output Parametric EQ 3-bandMains-Only Setup No Subs Application GuideHardware SoftwareTwo Mains/One Subwoofer Setup Two Mains/Two Subwoofers Setup Right Input Left/Mono InputSub with Satellites Setup Section a Appendix Factory ResetPower Up Quick Key Options System Lock Out Specifications Analog InputsCrossover Diagrams Adjust Output GainsAuto-EQ Optimization Tips Look out for ModesBlock Diagram DriveRack PXPreset List / Supported Speakers Preset ListSystem Setup and Gain Structure DriveRack PX Page Page Page Harman International Company
Top Page Image Contents