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  1. #1
    thylantyr's Avatar
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    Photos of new line arrays

    Found this thread.
    http://www.pesupport.com/cgi-bin/config.pl?read=330330

    pic here;
    http://img.photobucket.com/albums/v6...3/HPIM0594.jpg

    Latest project for my friends office. 16 NSB's and 48 Apex Jr. tweeters per side. Mahogany plywood cabinets. I'm now going to start on his double 12" power subs.

    The mechanical design is proper.







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    baseballer1100's Avatar
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    Re: Photos of new line arrays

    Nice.



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    Re: Photos of new line arrays

    Quote Originally Posted by thylantyr View Post
    Found this thread.
    http://www.pesupport.com/cgi-bin/config.pl?read=330330

    pic here;
    http://img.photobucket.com/albums/v6...3/HPIM0594.jpg

    Latest project for my friends office. 16 NSB's and 48 Apex Jr. tweeters per side. Mahogany plywood cabinets. I'm now going to start on his double 12" power subs.

    The mechanical design is proper.
    holy **** 96 tweets in total how big is that office




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    Re: Photos of new line arrays

    Quote Originally Posted by Crown_amps View Post
    holy **** 96 tweets in total how big is that office
    Doesn't make sense to me....







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    Re: Photos of new line arrays

    i have no reason to believe that bose does not make the best speakers period. If it is not a bose line array, i dont give a **** to be quite honest.



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    Re: Photos of new line arrays

    nice, whats the efficiency like on one of those?



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    Re: Photos of new line arrays

    I agree.



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    Re: Photos of new line arrays

    Got tweets?




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    Re: Photos of new line arrays

    96 tweeters is just stupid.

    Don't care how you try to excuse it.

    Stupid.

    nG




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    Re: Photos of new line arrays

    holy **** 96 tweets in total how big is that office

    Looks like ~6 foot tall line array. 6 foot is good for a room with 8 foot ceiling,
    but 7 foot is nicer. Looks like > 8 foot ceiling.

    nice, whats the efficiency like on one of those?
    Line array sensitivity is a variable that you can control to some degree.
    You can make it very high or lame. 16 NSB per tower at 8 ohm wiring is
    about 98dB sensitivity. If you choose 2 ohm wiring, 104dB. The tweeters should
    be able to accomodate the 98 - 104 range by doing proper wiring.
    I have no idea on how he wired up his array.

    96 tweeters is just stupid.
    What is stupid is making a line array with less tweeters. When it comes to
    line array, more is better. That's how you get low distortion and higher SPL,
    and large sound stage if you design it as such. Narrow sound stage can be
    made by using power tapering.

    It's a low cost array, the tweeters used are the bare minimum requirements.
    Spend more coin and get better tweeters to refine the sound. But it has potential
    if the crossovers and amps are good.




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    Re: Photos of new line arrays

    Quote Originally Posted by thylantyr View Post
    holy **** 96 tweets in total how big is that office

    Looks like ~6 foot tall line array. 6 foot is good for a room with 8 foot ceiling,
    but 7 foot is nicer. Looks like > 8 foot ceiling.

    nice, whats the efficiency like on one of those?
    Line array sensitivity is a variable that you can control to some degree.
    You can make it very high or lame. 16 NSB per tower at 8 ohm wiring is
    about 98dB sensitivity. If you choose 2 ohm wiring, 104dB. The tweeters should
    be able to accomodate the 98 - 104 range by doing proper wiring.
    I have no idea on how he wired up his array.

    96 tweeters is just stupid.
    What is stupid is making a line array with less tweeters. When it comes to
    line array, more is better. That's how you get low distortion and higher SPL,
    and large sound stage if you design it as such. Narrow sound stage can be
    made by using power tapering.

    It's a low cost array, the tweeters used are the bare minimum requirements.
    Spend more coin and get better tweeters to refine the sound. But it has potential
    if the crossovers and amps are good.

    Ehh, I'd rather have less tweeters of a higher quality. At a certain point, your only going to lose so much distortion and gain so much clarity from a lack of mechanical excursion.




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    Re: Photos of new line arrays

    Quote Originally Posted by T3mpest View Post
    Ehh, I'd rather have less tweeters of a higher quality. At a certain point, your only going to lose so much distortion and gain so much clarity from a lack of mechanical excursion.
    I use to think that way before I experimented with line arrays. I use to
    think that an array of cheap drivers = cheap sound.

    This is only true at a certain higher SPL level when you reach the drivers
    performance limit and produce higher distortion. Every cheap driver has potential
    to sound good at lower SPL, it's when you turn up the volume that problems start
    to manifest audibly. If the driver is a decent design, it will sound pretty good at
    lower SPL.

    Use headphones as an example. The drivers in headphones are small and low
    in SPL, yet they sound amazing when placed next to your ear. They distort like
    mad when you crank it. The sound is high end, but SPL lacks.

    In a line array, you raise SPL by 'quantity' of drivers {mutual coupling] and/or
    electrical gain by how you wire the array.

    Lets say that budget array has 48 tweeters per tower. Tweeter distortion is
    1/48 lower in an array a the same SPL level as the single tweeter.

    Hypothetical;
    Lets say those tweeters are 86dB sensitivity and they have good vertical dispersion. 48 of them can boost line array sensitivity up to 103dB by mutual
    coupling. Lets say the tweeter is 8 ohms each. If you can wire up the array for
    a 1 ohm load, the total sensitivity is 112dB sensitivity.

    Apply 1 watt of power to the array to generate 112dB of treble. You have
    48 tweeters, each tweeters gets 0.02 watts. Each tweeter hardly does any
    work, distortion is low, SPL is high because of the line array 'effect'.

    Imagine what happens when you use better tweeters. You can use
    less tweeters but it won't be a real line array anymore, it's a hybrid speaker
    that tries to look like a line array but ain't. It can sound great but it's not
    a line array.




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    Re: Photos of new line arrays

    Quote Originally Posted by T3mpest View Post
    Ehh, I'd rather have less tweeters of a higher quality. At a certain point, your only going to lose so much distortion and gain so much clarity from a lack of mechanical excursion.
    If you have a turd that smells.... By putting a bunch of those turds in a bag they should stop smelling.... RIGHT? NO!!!!

    Welcome to the world of "it doesn't make sense" line arrays.....







  14. #14
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    Re: Photos of new line arrays

    What was the cost of the project?




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    Re: Photos of new line arrays

    Quote Originally Posted by B&W_EE View Post
    If you have a turd that smells.... By putting a bunch of those turds in a bag they should stop smelling.... RIGHT? NO!!!!
    Welcome to the world of "it doesn't make sense" line arrays.....
    Do you need some links to study how line arrays work so it starts making sense?
    .. because I can't dumb down my posts more than I already do so this topic makes
    sense to you... Since day one you never understood or improved your knowledge
    on this subject.




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