Ideas for a Super Line Array

Discussion in 'DIY' started by OJneg, Dec 19, 2016.

  1. OJneg

    OJneg The Most Insufferable

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    I am looking for more like a configuration that @yotacowboy just posted. Potentially open baffle.

    I have a different project in mind using the AMT700's you saw.
     
  2. OJneg

    OJneg The Most Insufferable

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    Thinking real cheap with the tweeters, something like 10 of these per side. Want to have really close spacing obviously, but no aluminum dome sound

    (this is actually a surprisingly good tweeter, more clean and resolving than any playnar matched with lo-fi "wire-with-grain" amp. That's right $10 tweeter more resolving than any Chifiman)

    For woofers, I figure I have a 4" or so, which leads me to the obvious budget guy the B4N but I'm open to other options here. Want it to be cheap.

    If I do pick those two drivers I can call this the OS(MTT)^5
     
  3. OJneg

    OJneg The Most Insufferable

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    Interesting comment on the CBT curved design from that HHH white paper. Didn't think of it, but I suppose it does make sense given the physics.

     
  4. Grahad

    Grahad Guest

  5. Thad E Ginathom

    Thad E Ginathom Friend

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    A few years ago I met someone who was making software-controlled aimable line arrays. Could beam sound to distinct areas of a crowd, for instance.

    The whole thing, both audio and control, was connected by ethernet, so anywhere the network existed, a speaker could be placed.

    It was neat. Very neat. Even a hotel-hall demo was impressive.

    Lost touch: don't know if they went on to commercial success or not.
     
  6. Cspirou

    Cspirou They call me Sparky

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    Here's a video with Don Keele where he does live measurements of his CBT system



    He also does the same thing with a 3-way system in the video series.
     
  7. Serious

    Serious Inquisitive Frequency Response Plot

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    @Marvey I think a good bit of that lack of compression is the driver itself. I highly doubt that the 4" Fostex could sound as uncompressed as some of the larger, more expensive widebanders, even when using 10 of them.

    This was my main gripe with line-arrays. I guess a curved line-array makes sense if you figure out the listening distance first. I thought about a similar thing with 4 15" or 18" OB woofers per side on a "banana shaped" panel, but 8 woofers for two speakers gets very expensive very quickly. Yes, the effects on the FR won't be big because they really only produce low frequencies, but better time-coherence is always a good thing.
     
  8. yotacowboy

    yotacowboy McRibs Kind of Guy

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  9. OJneg

    OJneg The Most Insufferable

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    This line array project will inevitably matched with dual 15" subwoofers, so I'm not concerned with ultimate LF extension. I'm just trying to get the essence of the line array sound/polar pattern and see what it does for me
     

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