Test CD (DVD) for (bass) freq response mapping?

Discussion in 'Archived Threads 2001-2004' started by Kevin C Brown, Oct 29, 2001.

  1. Kevin C Brown

    Kevin C Brown Producer

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    I know that this has showed up in some of the other threads, but I was wondering if I could ping the community out there for suggestions for CDs (DVDs) for test signals to map the freq response in my room.
    Mostly for seeing if I need to do any correction for my sub.
    I don't have a sound card in my PC, so it has to be an available disc that I can buy.
    THANKS!!
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  2. SkiingNinja

    SkiingNinja Second Unit

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  3. Nick P

    Nick P Second Unit

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    Also try www.autosound2000.com and look at CD101. It has sine waves in 1hz steps from 10-99hz.
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  4. Kevin C Brown

    Kevin C Brown Producer

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    Thanks guys!
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  5. BruceD

    BruceD Screenwriter

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    Kevin,
    A full duplex sound card can be had at central computers on Stevens Creek Blvd. for
     
  6. Kevin C Brown

    Kevin C Brown Producer

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    Bruce- I do think that I realize that yours and Guy's way is the best. The problem? I am running out of IRQ's (and the motivation to make them work) on my PC.
    I've had a CD burner sitting on my desk for over a year, just because I haven't been able to get up the nerve to "fight" with it and my PC to get it installed! [​IMG]
    I'll try the bass test CDs 1st and see how that goes.
    (I do plan on getting an Win XP PC next summer, so I may have to revisit this then...)
    Thanks for the local tip!!
    Any hints on where you got your BFD by the way? [​IMG]
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  7. Chris PC

    Chris PC Producer

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    Bruce D,
    How much does that ETF software cost?
    I was wondering what that RCA "output" connector was for. Now I know. Cool.
    [Edited last by Chris PC on October 30, 2001 at 07:11 PM]
     
  8. jeff lam

    jeff lam Screenwriter

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    Kevin,
    I have the Stryke CD and I live in the same city as you. If you want to use it just let me know.
    Jeff
     
  9. BruceD

    BruceD Screenwriter

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    I bought my BFD 1100P in June this summer from AMS,
    AMS
    But it appears they don't have it listed currently.
    I think ETF5 was $150.
    Bruce
    [Edited last by BruceD on October 30, 2001 at 09:13 PM]
     
  10. Kevin C Brown

    Kevin C Brown Producer

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    Jeff- I ordered the Autosounds CD yesterday, but thanks for the offer. (Do you have one of these EQs?)
    Bruce- I picked up a used BFD today on ebay. (Guitar Center's computer said they had one, but the dude looked for 20 min and couldn't find it. 3 different web sites I checked were all out too.) I got the manual from the web site. I am a very computer literate guy, but this thing does *not* look easy to set up...
    24 bit/46kHz internal processing, 20 bit DAC's and ADC's, ... very cheap! I don't know how they do it.
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  11. Chris PC

    Chris PC Producer

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    There are some test files on that ETF website. I tried downloading them, but I'm not sure if they worked as I tried to unzip them and it didn't work. Can I download those test files from the ETF website and burn them onto a CD?
     
  12. BruceD

    BruceD Screenwriter

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    Kevin,
    If you get a MIDI cable set to connect to your game port on your PC, you can use the software below to set-up your BFD 1100P.
    MIDI 1100P pgm
    This is easier than using the manual to figure out how to use the buttons.
    Bruce
     
  13. jeff peterson

    jeff peterson Supporting Actor

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    In checking out the CD101 from www.autosound2000.com; I find the following quote:
    "a perfect 16-bit digital sine wave recorded at exactly -20 dB below digital clipping"
    I'm running a 25-31PC, thinking of getting the BFD 1124 when it comes out to tame a couple of peaks. I seem to remember Tom V warning about running pure sine waves through the SVS (or probably any other sub for that matter) for an extended period of time at higher volumes.
    Tom, if you're reading, do I remember correctly? If so, what would be an extended period of time and at what volume before I hurt anything?
    Thanks.
     
  14. JohnnyG

    JohnnyG Screenwriter

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    I just got an Infinity RABOS kit for my IL60's and that should do want you want. It comes with an SPL meter, a test CD and the tools/instructions to figure out what kind of equalization you might need.
     
  15. Tom Vodhanel

    Tom Vodhanel Cinematographer

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    The rabos kit is cool,worth the $60 from what I've heard on it.

    with any driver(using a voice-coil) you don't want to run continuous signal thru it at high amptitude for more than a couple seconds.(unless you don't care if you begin melting some adhesives).

    Sinewaves can be tricky...and you need to use caution.(2-3 second bursts at high output levels for example).

    TV
     

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