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Midrange+ HF positions,phase and goings-on *Q* [message #43927] Thu, 12 February 2004 20:57 Go to next message
Mike.e is currently offline  Mike.e
Messages: 471
Registered: May 2009
Illuminati (1st Degree)
Hello!

I need some help-I know a little about bass,but i need more midrange /main speaker design info!

when i search for midrange design,speaker position,and phase i get a whole lot of hifi nonsense,'phase control on ur plate amp' 'blah blah our speakers are phase perfect' etc etc.

I need-
-phase info regarding comb filtering,distance between woofers
-'overlap' with low order crossovers and effects -low vs high roll off filtering
-other issues such as horizontal positions of speakers vs vertical,dispersion etc

( + your personal experience, LR 24db/octave filters LOOK GOOD in theory,but how do they compare to the simplicity of certain systems with 1st order)

The only one i could find was ESP's phase guide but its so in depth i was scared off and left it for later when i feel like doing some study.\\\

No need to write much,just links will do!

Im sure Adrian will have a link or 3 for me,its just i cant find them yet!

According to my memory,the JBL pdf file available at PI speakers was mainly Pro usage ,not so much home speaker design and phasing etc...


Cheers all
Mike.e *wanting to learn more midrange*

A few useful links [message #43929 is a reply to message #43927] Fri, 13 February 2004 02:32 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18791
Registered: January 2001
Illuminati (33rd Degree)
Here are a few links:

  • Crossovers and phase shifts
  • Baffle spacing, crossovers and phase angles
  • Phase, delays and offset baffle spacing
  • Baffle spacing, phase angles and time alignment, revisited
  • Audibility of Phase
  • Holism and Reductionism - Fourier Series
  • Crossover nulls
  • Horn Phase
  • Transient Perfect Crossovers
  • A few useful documents
  • Re: A few useful links [message #43930 is a reply to message #43929] Fri, 13 February 2004 02:45 Go to previous messageGo to next message
    Adrian Mack is currently offline  Adrian Mack
    Messages: 568
    Registered: May 2009
    Illuminati (1st Degree)

    I think that pretty much covers it Mike.

    I would also suggest looking at the Crossover Document available at the Pi Speakers site. It's shows how to calculate positions where phase will be destructive.

    Re: A few useful links [message #43934 is a reply to message #43929] Fri, 13 February 2004 08:21 Go to previous message
    Mike.e is currently offline  Mike.e
    Messages: 471
    Registered: May 2009
    Illuminati (1st Degree)
    Thanks i knew ud have some! just had to find them!
    probably some of them are to do with adrian asking questions about these topics

    :-)

    Cheers!

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