Question about DBX DriveRack 480 Processing Unit Home Equalizer

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I have a dbx driverack 480 that was professionally installed 3 years ago at our church, we have had to return it to dbx once for repair (just stopped turning on...) and it came back working like a champ. now a year or so later the outputs have begun cutting in and out and there is an audible "clicking" sound from the unit itself, as if something is arcing inside. all of the leds on the front appear to be working normally and there are no clip lights. i have no idea whats going on. help!

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  • mattf923 Jan 01, 2009

    after pressing the "other" button on the control panel, the problem went away... i am so out of my league here...



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  • 32 Answers

Test the XLR cables that go in and out of the dbx. It's kind of a long shot but I think it's the best place to start.

Posted on Feb 06, 2010


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Driverack pa plus sends this message WAITING FOR FLASH DOWNLOAD V. 0.109. i tried hard and soft reset but nothing happens, is there a solution?

The unit has been put into the mode to reload the operating system. You need to connect it up and load it with fresh download of the system. You can probably download the firmware from the manufacturer's site in their support section. There may be no other way to restore it. Be careful as any corruption during a flash download can be fatal requiring return to the manufacturer for reloading. Find the firmware for your unit here:

Follow the directions for instalation TO THE LETTER !!! Read twice before doing !!!!

Jul 21, 2011 | DBX Professional Products DBX Driverack PA...

1 Answer

How set up my dbx driverack 480

Use the setup wizard on the on-screen display.

Sep 16, 2010 | DBX DriveRack 480 Processing Unit Home...

1 Answer

How can i set my drive rack,to stop the base line and the base drum from coming out in the tops

thats in the crossover on your rack you actually need separate amps one for hi and one for lows connected to your d rack

Jun 11, 2010 | DBX DriveRack 480 Processing Unit Home...

1 Answer

DBX PA+ no settings for Yorkville EF500P and LS801P

yeah that is because Harmon makes JBL speakers and Crown amps..for Yorkville Speakers use the VTC DLMS4080 Speaker processor, it blows the Drive PA away...

May 05, 2010 | DBX DriveRack 480 Processing Unit Home...

1 Answer

No access to driverack 480 with belkin adapter

Hi there,

The Driverack Series all use a Null Modem cable for the connection to the Serial Port. A standard serial cable or female to female lead will not work, as the wiring has to be of the Null Modem type. A suitable lead should be available from your local PC supplier, failing that DBX can supply you with one also.

Hope that helps.


Feb 04, 2009 | DBX DriveRack 480 Processing Unit Home...

1 Answer

Signal to speakers periodically drops out

I can not tell for sure without seeing the unit; however, this often happens with stereo receivers when the contacts on the protection relay start to go bad. You can try to polish the contacts with emery cloth or a fiber brush but it is best to replace the relay if you can find one that will fit.

Jan 01, 2018 | DBX Driverack-Pa Eq/Speaker Control System...

4 Answers

DBX DriveRack PA power failure

repair the transformers,,,using a digital voltmeter when both transfrormer are good the measure like 56 ohms, if one is good and the other is bad is gonna measure like 120 ohms , if both are damage it will measure nothing, all this with the switch in its on stage.

If you dont find anyone that can repair the transformers buy them.

Jan 28, 2008 | DBX DriveRack 480 Processing Unit Home...

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