+ Reply to Thread
Results 1 to 7 of 7

Thread: Uneven Loudness from DBX 223XL

  1. #1
    Senior Member
    Join Date
    Feb 2004
    Location
    Land of Sunshine
    Posts
    329

    Uneven Loudness from DBX 223XL

    Hi,

    I am experiencing uneven loudness for the L and R (high and low) output when the controls positions for both Land R channels are matched. Could this be due to I am using RCA to XLR cables from pre amp to 223XL? I have checked the cables and it is wired correctly i.e. pin 2 is hot, and pin 1 and 3 are connected. Also the 223XL was bought new.

    Anybody knows what the problem is?

    Thanks.

  2. #2
    Senior Member 1audiohack's Avatar
    Join Date
    Jul 2007
    Location
    Las Vegas Nevada
    Posts
    1,532
    How far off are they? If it's a matter of less than a clock position I have DBX and Rane analog gear off that far on output levels and Xover slopes. Sometimes the knobs are just miss-positioned.

    Sounds like the preamp to DBX cables are correct, how are the DBX output to amp cables configured?

    If it's more than that and you have done all the cable / chanel swapping thus eliminating outside possibilities it may need servicing.

    Do you have any measurement gear?
    If we knew what the hell we were doing, we wouldn't call it research would we.

  3. #3
    Senior Member
    Join Date
    Feb 2004
    Location
    Land of Sunshine
    Posts
    329
    The cables from XO to amp are XLR to XLR. The difference on the bass is more pronounced than the highs. The Highs are off about one clock marking (i.e. 2 and 3 oclock) and bass about two clock markings.

    Any idea how I can check? Thanks

  4. #4
    Obviously... not a golfer grumpy's Avatar
    Join Date
    Oct 2003
    Location
    SoCal
    Posts
    4,142
    Short answer: put a tone through and measure the output voltage.

    What tools do you have to perform audio stimulus/response measurements?
    (some folks still have tone generators and oscilloscopes but I realize that's
    not too common anymore) a cd or computer generated tone (well in-band) and
    an AC voltmeter with a wide enough frequency response (could use a 60Hz tone
    to be sure) should be fine.
    It's uh... uh... it's down there somewhere, let me take another look...

  5. #5
    Senior Member Lee in Montreal's Avatar
    Join Date
    Sep 2010
    Location
    Montréal
    Posts
    1,915
    When I have similar unbalance problem, my first step for chcking is to put the pre-amp in mono. Then swap the left to right connectors to see if the problem follows the connector.
    Some crossovers have a "+12bd/+24db max level switch" at the back. Maybe your crossover has one per channel and they are not set the same for each channel. Such switches can be in the input and output.

    Also, you may have the "sum" switch activated by mistake.

  6. #6
    Senior Member Lee in Montreal's Avatar
    Join Date
    Sep 2010
    Location
    Montréal
    Posts
    1,915
    Is the problem solved now?

  7. #7
    Senior Member
    Join Date
    Feb 2004
    Location
    Land of Sunshine
    Posts
    329
    Hi,

    The problem is resolved now... thks

+ Reply to Thread

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Uneven Loudness
    By ngccglp in forum Lansing Product Technical Help
    Replies: 22
    Last Post: 08-28-2008, 12:26 PM
  2. DBX 223XL
    By Ian Mackenzie in forum Electronic Crossovers
    Replies: 1
    Last Post: 02-13-2008, 01:36 PM
  3. 4350's: Very uneven frequency response
    By j20056 in forum Lansing Product Technical Help
    Replies: 10
    Last Post: 02-25-2007, 08:14 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts