Speakers calibration... what source should I trust?

Discussion in 'Speakers' started by al lout, Nov 5, 2004.

  1. al lout

    al lout Stunt Coordinator

    Joined:
    May 6, 2004
    Messages:
    164
    Likes Received:
    0
    I've recently purchased a pioneer vsx-1014. This receiver came with auto mcacc. After I ran the auto mcacc on all the speakers, I've noticed that the speakers level doesn't match w/ the DVE disc + SPL meter. My question is which source is correct? Which settings should I use? Thanks all...

    Al,
     
  2. Justin_D

    Justin_D Stunt Coordinator

    Joined:
    Dec 27, 2003
    Messages:
    217
    Likes Received:
    0
    Go with DVE. Those "auto-calibrations" are more of an estimate. Using a SPL meter with a DVE disk is much more of a scientific measurement.
     
  3. LanceJ

    LanceJ Producer

    Joined:
    Oct 26, 2002
    Messages:
    3,168
    Likes Received:
    0
    Please elaborate.

    Because after reading the stories here of test discs with incorrect levels and testing methodologies & meters that need additional special calculations to make up for their own deficiencies, personally I'm much more inclined to go with the receiver's built-in calibration system.
     
  4. Kevin C Brown

    Kevin C Brown Producer

    Joined:
    Aug 3, 2000
    Messages:
    5,712
    Likes Received:
    0
    DVE has a known problem with the sub channel level.

    The receiver has an internal set of test tones, right? I'd run those manually and see what the Radio Shack meter says.

    Also, I know that Avia has test tones that are correct.
     
  5. LanceJ

    LanceJ Producer

    Joined:
    Oct 26, 2002
    Messages:
    3,168
    Likes Received:
    0
    Part of the reason I get concerned about this constant hand-wringing over using meters and test discs is because those automatic systems can really take a load off of non-audio-hobbyists minds when setting up these admittedly complicated systems. But when people blurt out that such automated systems barely cut the mustard I think their owners deserve to be told HOW inaccurate they are and in what manner that conclusion was reached. And blowing @$70 for a meter and a test disc is no fun at all if you don't really need to.
     
  6. WayneO

    WayneO Supporting Actor

    Joined:
    Nov 10, 2003
    Messages:
    625
    Likes Received:
    0
    Calibrate it both ways and see which one you prefer is probably your best solution. OR.....I'd run the auto calibration, and then check the levels with the meter. If they're right,they're right. If a little off, I'd assume using the receivers test tones would be the way to correct anything. DVE's sub tone is recorded about 10-12 dB too hot in my experience, so you would actually want your sub 10-12 dB higher than the rest of your speakers to correct for that. AVIA has no issues as far as I know.
     
  7. Kevin C Brown

    Kevin C Brown Producer

    Joined:
    Aug 3, 2000
    Messages:
    5,712
    Likes Received:
    0
    Using the autocalibration in a receiver is a tool. Just like using a Radio Shack meter with the receiver's test tones (or with Avia). They are all tools. The problem I have with only trusting the autocal routines, is that I have seen cases where they set "small" speakers as large and mis-adjust levels and/or speaker distances. (I.e., not all autocalibration systems are equal.) It's certainly OK to start with an autocal procedure, but make sure to check what it's doing against some other "standard". EVen if that other standard is just a tape measure and common sense. [​IMG]
     
  8. Drew_W

    Drew_W Screenwriter

    Joined:
    Jul 2, 2003
    Messages:
    1,718
    Likes Received:
    0
    My 53TX brought it in close, but I still "finalized" with an SPL meter and Avia...
     
  9. al lout

    al lout Stunt Coordinator

    Joined:
    May 6, 2004
    Messages:
    164
    Likes Received:
    0
    Thanks for the suggestion all... I did the auto MCACC then finalized w/ SPL meter... Now only if it has auto MCACC for the sub as well... Oh well, saving up for the BFD... Thanks all...

    Al,
     

Share This Page