Talk:Loudspeaker enclosure

message: I would like to see a reference where the principle behind your theory on acoustic suspension cabinets needing leaks can be found.  I have never heard of this and would like to be sure it is accurate.  Most people spend a painstaking amount of time to insure there are absolutely no leaks in their AS systems.
Thank you
The spacemonkey
:I've seen it referenced in severl DIY design rationales for sealed boxes, eg Linkwitz's Pluto+ subwoofer design. But more importantly, most speakers have some air leaks, through the magnet structure/dust cap, or the surround or the cone itself. So in those cases, barometric pressure changes will not bias the position of hte voice coil in the gap. But for speakers with rubber sourrounds, plastic cones and dust caps, it's possible to have sufficiently low leakage that the speaker becomes a barometer or sorts, with the bias position and slow motion of the cone bias being an indication of air mass movement into and out of your location. The leakage path, intentional or not, should be, of course, quite small, such that the resistance to air flow is high enough that, at audio frequencies, the enclosure is effectively fully sealed. ww 21:00, 18 February 2007 (UTC)
thread_title: Leaks In Acoustic Suspension

message: The diagrams are potentially confusing, because they vary randomly having the front of the speaker facing left or right.  At first glance, I thought the passive radiator" had the speaker cone facing the back and radiated from the box.  And in the compound or band-pass speaker, it's even less obvious which is the front.  
Some of these should be flipped so that they all have the front facing the same way.  It may also be necessary to indicate the front with an arrow or label, but hopefully this can be avoided.
I suggest the speakers all face left, into the text of the article. —Michael Z. 2007-05-30 21:57 Z
:Heh. It's only taken a year, but I believe the issue is fixed. Binksternet (talk) 19:14, 4 June 2008 (UTC)
thread_title:  Diagrams facing random directions 

message: What's better for people: this version of the page with hard-coded pixel sizes of images, or this version with scaled sizes, using the "upright" parameter in the extended image syntax? I think hard-coded image sizes aren't good for the wide variety of people who come read the page with an equally-wide variety of browser window sizes, screen resolutions, thumbnail preferences, etc. Binksternet (talk) 20:10, 5 November 2009 (UTC)
thread_title:  Image sizes 

message: I came here looking for at least a couple of paragraphs discussing the purpose of the grille, and why they are often removable, even on things like small, cheap computer speakers. This seems the most appropriate page for it, yet there's not one mention of grille currently. Thanks. 66.90.186.197 (talk) 18:16, 8 February 2010 (UTC)
thread_title:  Grille description 

message: I can't believe en.wikipedia doesn't have a page for this audio inventor - de. and nl. do ! Brought stereo sound to the UK, Invented  horn speaker and Voigt pipe, Moving coil pickup/cutter, electrostatic microphone, In 1974 he was honoured with the Fellowship of the Audio Engineering Society at their New York Convention...  --195.137.93.171 (talk) 22:00, 18 September 2010 (UTC)
thread_title:  Paul G. A. H. Voigt 

message: I tried splitting Tweeter from Woofer section, but my internet is playing-up.
There's some scope for some interesting stuff for horns vs waveguides here - constant directivity, oblate spheroids ...
Waveguide (acoustics) is inteesting for transmission not emission.
--195.137.93.171 (talk) 08:00, 21 November 2010 (UTC)
thread_title:  Waveguide section 

message: Concerning transmission lines and pipes...  In the DIY community at least, the terms are used pretty much interchangeably.  What is the justification for saying a 1/4 wave pipe is not a "true" transmission line?  Would it not be better just to explain how the two terms are commonly used?
The assertion that pipes are typically larger than bass reflex enclosures needs justification and clarification.  Does the assertion refer to length or does it mean enclosed volume?  The pipe can be folded up.
I think the sections on transmission lines and tapered quarter wave pipes should be merged.
Someone needs to rework the whole thing.  M.J. King is the man to do it, if he can be persuaded.
The part about Bose is wrong.  Follow the link in the footnote and you'll find the "Acoustic Waveguide" described in advertisements on the Bose web site.  It is not a tapered pipe.  It is a straight 1/4 wave pipe, driven at the closed end, and tuned to around 40Hz.  Here is the patent: http://www.freepatentsonline.com/6278789.pdf It is not clear to me what the patent covers that was not prior art in 2001.  Disclosure: I rather dislike giving Bose any mention. Jive Dadson (talk) 20:10, 10 January 2011 (UTC)
thread_title:  Pipes and Bose 

message: The wikipedia article on acoustic suspension says that such systems are very popular. http://en.wikipedia.org/wiki/Acoustic_suspension
The section here says they are not.  One of the articles is wrong, and I think it's this one.  If you define acoustic suspension systems as sealed boxes where the enclosure volume is less than the driver's Vas, then they are quite popular.  What IS the definition?  I do not think there is one, really.  Isn't it more a marketing term of Acoustic Research (AR)? Jive Dadson (talk) 20:35, 10 January 2011 (UTC)
thread_title:  Acoustic suspension rare? 

message: How come this page also has an alternative URL of http://en.wikipedia.org/wiki/Tapped_horn ?  — Preceding unsigned comment added by Eyleron (talk • contribs) 19:40, 19 April 2011 (UTC)
thread_title:  Tapped_horn, a version of the Loudspeaker_enclosure page? 

message: Most of the images, including the MTX boxes at the top, which is mine, are terrible. I was just putting them there for now because no one seemed to have anything better to offer at the time. I just added another mediocre image to voice coil becuase there are no others. To avoid brand name issues, I think quality pictures of good quality home made stuff is best for these articles. Daniel Christensen (talk) 01:12, 9 July 2011 (UTC)
replies: text: My gawd, all of my pictures are still here. Daniel Christensen (talk) 19:06, 18 February 2012 (UTC)
thread_title: Images

message: Its worth mentioning that while resonance can increase bass output and thus extend bass response, it also causes a time domain distortion, and that for bass reflex designs in particular this has often proved objectionable.
Tabby (talk) 01:22, 17 April 2013 (UTC)
replies: text: It is certainly worth talking about resonance—absolutely. Do you have a reference for extended bass response? My gut feeling is that the cabinet would be louder with increasing resonance, but not necessarily lower extension. Binksternet (talk) 01:34, 17 April 2013 (UTC)
thread_title:  Resonance 

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thread_title:  External links modified 

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